Image transformations
Whether your web application supports user uploaded images, you deliver static images, or you display profile pictures from social networks, you probably need to manipulate them to fit the graphic design of your Web site or mobile application.
For example, the following dynamic URL with on-the-fly image transformation crops an image to a 400x400 circular thumbnail while automatically focusing on the face, and then scales down the result to a width of 200 pixels. Below you can see the original image (scaled down) and the dynamically created face detection based thumbnail.
cl_image_tag("lady.jpg", :transformation=>[ {:width=>400, :height=>400, :gravity=>"face", :radius=>"max", :crop=>"crop"}, {:width=>200, :crop=>"scale"} ])
cl_image_tag("lady.jpg", array("transformation"=>array( array("width"=>400, "height"=>400, "gravity"=>"face", "radius"=>"max", "crop"=>"crop"), array("width"=>200, "crop"=>"scale") )))
CloudinaryImage("lady.jpg").image(transformation=[ {"width": 400, "height": 400, "gravity": "face", "radius": "max", "crop": "crop"}, {"width": 200, "crop": "scale"} ])
cloudinary.image("lady.jpg", {transformation: [ {width: 400, height: 400, gravity: "face", radius: "max", crop: "crop"}, {width: 200, crop: "scale"} ]})
cloudinary.url().transformation(new Transformation() .width(400).height(400).gravity("face").radius("max").crop("crop").chain() .width(200).crop("scale")).imageTag("lady.jpg");
cloudinary.imageTag('lady.jpg', {transformation: [ {width: 400, height: 400, gravity: "face", radius: "max", crop: "crop"}, {width: 200, crop: "scale"} ]}).toHtml();
$.cloudinary.image("lady.jpg", {transformation: [ {width: 400, height: 400, gravity: "face", radius: "max", crop: "crop"}, {width: 200, crop: "scale"} ]})
<Image publicId="lady.jpg" > <Transformation width="400" height="400" gravity="face" radius="max" crop="crop" /> <Transformation width="200" crop="scale" /> </Image>
<cl-image public-id="lady.jpg" > <cl-transformation width="400" height="400" gravity="face" radius="max" crop="crop"> </cl-transformation> <cl-transformation width="200" crop="scale"> </cl-transformation> </cl-image>
cloudinary.Api.UrlImgUp.Transform(new Transformation() .Width(400).Height(400).Gravity("face").Radius("max").Crop("crop").Chain() .Width(200).Crop("scale")).BuildImageTag("lady.jpg")
MediaManager.get().url().transformation(new Transformation() .width(400).height(400).gravity("face").radius("max").crop("crop").chain() .width(200).crop("scale")).generate("lady.jpg");
imageView.cldSetImage(cloudinary.createUrl().setTransformation(CLDTransformation() .setWidth(400).setHeight(400).setGravity("face").setRadius("max").setCrop("crop").chain() .setWidth(200).setCrop("scale")).generate("lady.jpg")!, cloudinary: cloudinary)
Cloudinary allows you to easily transform your images on-the-fly to any required format, style and dimension, and also optimizes images to have the minimal file size for an improved user experience and for saving bandwidth. Doing so is done by implementing dynamic image transformation and delivery URLs for accessing the images. You can change the required transformations at any time and all transformed images will be created on-demand (lazily) and delivered to your users through a fast CDN with optimized caching.
You can specify the required height and width, define the way to crop the image, and select the image format that fits your needs. You can also use our face detection based cropping techniques for focusing on the most relevant part of user uploaded photos. For complex transformations, you can use the Management Console or Admin API for defining named transformations and even run a set of chained transformations on your images. You can also use the Management Console to view delivery usage reports and optimization insights.
- Deliver images using dynamic Cloudinary URLs
- Embed images in web pages
- Resize image dimensions and crop to match your graphic design
- Detect faces in images for automatic cropping, resizing, overlay placement and using visual effects
- Convert between image formats
- Adjust image quality
- Modify the image shape and style
- Apply effects to images
- Add image and text overlays
- Chain transformations together
- Name custom transformations
- Optimize images
- Deliver responsive images
- Fetch images from remote locations
- Control access to your images
- Use advanced URL delivery options
- Deliver content from PDF files
- Deliver Photoshop images
- Manage animated GIFs
- Add flags to control transformation behavior
- Apply transformations only if a specified condition is met
- Use arithmetic expressions to adjust the value of numeric parameters or user-defined variables
- Define and use user-defined variables in your transformations
The Image Transformations Reference table summarizes the extensive list of parameters available for manipulating images.
Cloudinary's client libraries (SDKs) take care of the transformation URL building for you, and simplify the integration even further. They allow you to continue working in your preferred developer framework and provide helper methods to simplify building image tags and image transformation URLs: Rails, PHP, Django, JavaScript, jQuery, Node.js, .NET, Java, Angular, Javascript, React, iOS, Scala and Android.
Delivering media assets using dynamic URLs
Accessing media assets is done using simple delivery HTTP or HTTPS URLs which are then delivered to users via a worldwide fast CDN. The URL contains the Public ID of the requested asset plus any optional transformation parameters. The public ID is the unique identifier of the asset and is either specified when uploading the asset to your Cloudinary account, or automatically assigned by Cloudinary (see Upload images for more details on the various options for specifying the public ID).
The Cloudinary resource delivery URL takes the following structure:
https://res.cloudinary.com/<cloud_name>/<resource_type>/<type>/<version>/<transformation parameters>/<public_id>.<format>
Where:
cloud_name- The name of your Cloudinary account, a unique public identifier for URL building and API access.resource_type- (optional) The type of asset to deliver. Default:image. Valid values:image,raw, orvideotype- (optional) The delivery type. Default:upload. Valid values:upload,private,authenticated,fetch(plus additional social media fetch types. For details, see Fetching images from remote locations).version- (optional) You can add the version to your delivery URL to bypass the cached version on the CDN and force delivery of the latest resource (in the case that a resource has been overwritten with a newer file). For simplicity, the version component is generally not included in the example URLs on this page. For details, see Asset versions.transformations(optional) One or more transformation parameters in a single component, or a set of chained transformations in multiple components. When the transformation URL is first accessed, the derived media file is created on-the-fly and delivered to your user. The derived file is also cached on the CDN and is immediately available to all subsequent users requesting the same asset.public_id- The unique identifier of the resource, including the folder structure if defined.format- (optional) The file extension of the requested delivery format for the resource. Default: The originally uploaded format or the format determined by f_auto, when used.
For example, displaying the image with a public ID of sample uploaded to Cloudinary's demo account in jpg format:
cl_image_tag("sample.jpg")cl_image_tag("sample.jpg")CloudinaryImage("sample.jpg").image()cloudinary.image("sample.jpg")cloudinary.url().imageTag("sample.jpg");cloudinary.imageTag('sample.jpg').toHtml();$.cloudinary.image("sample.jpg")
<Image publicId="sample.jpg" > </Image>
<cl-image public-id="sample.jpg" > </cl-image>
cloudinary.Api.UrlImgUp.BuildImageTag("sample.jpg")MediaManager.get().url().generate("sample.jpg");imageView.cldSetImage(cloudinary.createUrl().generate("sample.jpg")!, cloudinary: cloudinary)
The following shows an example of delivering an image with transformation parameters, where the image with a public ID of sample is cropped to a width of 300 pixels and a height of 200 pixels, and delivered in JPEG format:
cl_image_tag("sample.jpg", :width=>300, :height=>200, :crop=>"crop")
cl_image_tag("sample.jpg", array("width"=>300, "height"=>200, "crop"=>"crop"))
CloudinaryImage("sample.jpg").image(width=300, height=200, crop="crop")
cloudinary.image("sample.jpg", {width: 300, height: 200, crop: "crop"})
cloudinary.url().transformation(new Transformation().width(300).height(200).crop("crop")).imageTag("sample.jpg");
cloudinary.imageTag('sample.jpg', {width: 300, height: 200, crop: "crop"}).toHtml();
$.cloudinary.image("sample.jpg", {width: 300, height: 200, crop: "crop"})
<Image publicId="sample.jpg" > <Transformation width="300" height="200" crop="crop" /> </Image>
<cl-image public-id="sample.jpg" > <cl-transformation width="300" height="200" crop="crop"> </cl-transformation> </cl-image>
cloudinary.Api.UrlImgUp.Transform(new Transformation().Width(300).Height(200).Crop("crop")).BuildImageTag("sample.jpg")
MediaManager.get().url().transformation(new Transformation().width(300).height(200).crop("crop")).generate("sample.jpg");
imageView.cldSetImage(cloudinary.createUrl().setTransformation(CLDTransformation().setWidth(300).setHeight(200).setCrop("crop")).generate("sample.jpg")!, cloudinary: cloudinary)
You can also use shortcut URLs when specifically delivering images using the default upload type. With Cloudinary’s Root Path URL feature, the resource type and type parameters can be omitted from the URL (they automatically default to the values 'image' and 'upload' respectively). For example, the Root Path shortcut delivery URL for the cropped image above is:
https://res.cloudinary.com/demo/w_300,h_200,c_crop/sample.jpg
The rest of this page documents the various transformation and delivery options, and you can also see the Image Transformation Reference table and Video Transformation Reference for the extensive list of available transformation parameters and their values.
Secure HTTPS URLs
Cloudinary supports delivering media assets using HTTPS URLs. The process for creating HTTPS delivery URLs is identical to creating HTTP URLs, with only the URL protocol changing. When using one of Cloudinary's framework SDKs, you can generate HTTPS URLs by setting the secure parameter to true, either globally (e.g., in the CLOUDINARY_URL environment variable) or locally in each call. For example, delivering the sample image with HTTPS:
cl_image_tag("sample.jpg", :secure=>true)
cl_image_tag("sample.jpg", array("secure"=>true))
CloudinaryImage("sample.jpg").image(secure=True)
cloudinary.image("sample.jpg", {secure: true})
cloudinary.url().secure(true).imageTag("sample.jpg");
cloudinary.imageTag('sample.jpg', {secure: true}).toHtml();
$.cloudinary.image("sample.jpg", {secure: true})
<Image publicId="sample.jpg" secure="true"> </Image>
<cl-image public-id="sample.jpg" secure="true"> </cl-image>
cloudinary.Api.UrlImgUp.Secure(true).BuildImageTag("sample.jpg")
MediaManager.get().url().secure(true).generate("sample.jpg");
imageView.cldSetImage(cloudinary.createUrl().generate("sample.jpg")!, cloudinary: cloudinary)For more information on using HTTPS to deliver your media assets, see the article on Why isn't everyone using HTTPS and how to do it with Cloudinary.
Embedding images in web pages
Accessing uploaded images or their derived transformations is done using simple URLs that you can use as the 'src' of the 'img' tags in your HTML code or Javascript functions. URLs for accessing resources contain the resource kind, the Public ID of the resource, and optional version and transformation parameters. You can also use Cloudinary’s web framework SDKs to aid you in adding images to your web application and simplify the creation of transformation URLs and embedding HTML image tags. Cloudinary offers two main helper methods in this regard:
The Cloudinary URL helper method (e.g., cloudinary_url in Ruby on Rails) automatically generates the image source URL for use as the 'src' of the 'img' tags in your HTML code or Javascript functions. For example, using the URL helper method to return the URL of the sample image, scaled to a width of 300 pixels and a height of 100 pixels:
cloudinary_url("sample.jpg", :width=>300, :height=>100, :crop=>"scale")
Cloudinary::cloudinary_url("sample.jpg", array("width"=>300, "height"=>100, "crop"=>"scale"))
cloudinary.utils.cloudinary_url("sample.jpg", width=300, height=100, crop="scale")
cloudinary.url("sample.jpg", {width: 300, height: 100, crop: "scale"})
cloudinary.url().transformation(new Transformation().width(300).height(100).crop("scale")).generate("sample.jpg")
cloudinary.url('sample.jpg', {width: 300, height: 100, crop: "scale"});
$.cloudinary.url("sample.jpg", {width: 300, height: 100, crop: "scale"})
cloudinary.url('sample.jpg', {width: 300, height: 100, crop: "scale"});
cloudinary.url('sample.jpg', {width: 300, height: 100, crop: "scale"});
cloudinary.Api.UrlImgUp.Transform(new Transformation().Width(300).Height(100).Crop("scale")).BuildUrl("sample.jpg")
MediaManager.get().url().transformation(new Transformation().width(300).height(100).crop("scale")).generate("sample.jpg");
cloudinary.createUrl().setTransformation(CLDTransformation().setWidth(300).setHeight(100).setCrop("scale")).generate("sample.jpg")
The Cloudinary Image Tag helper method (e.g., cl_image_tag in Ruby on Rails) automatically generates an HTML image tag including the image source URL. For example, using the Image Tag helper method to create an HTML image tag for the sample image, scaled to a width of 300 pixels and a height of 100 pixels:
cl_image_tag("sample.jpg", :width=>300, :height=>100, :crop=>"scale")
cl_image_tag("sample.jpg", array("width"=>300, "height"=>100, "crop"=>"scale"))
CloudinaryImage("sample.jpg").image(width=300, height=100, crop="scale")
cloudinary.image("sample.jpg", {width: 300, height: 100, crop: "scale"})
cloudinary.url().transformation(new Transformation().width(300).height(100).crop("scale")).imageTag("sample.jpg");
cloudinary.imageTag('sample.jpg', {width: 300, height: 100, crop: "scale"}).toHtml();
$.cloudinary.image("sample.jpg", {width: 300, height: 100, crop: "scale"})
<Image publicId="sample.jpg" > <Transformation width="300" height="100" crop="scale" /> </Image>
<cl-image public-id="sample.jpg" > <cl-transformation width="300" height="100" crop="scale"> </cl-transformation> </cl-image>
cloudinary.Api.UrlImgUp.Transform(new Transformation().Width(300).Height(100).Crop("scale")).BuildImageTag("sample.jpg")
MediaManager.get().url().transformation(new Transformation().width(300).height(100).crop("scale")).generate("sample.jpg");
imageView.cldSetImage(cloudinary.createUrl().setTransformation(CLDTransformation().setWidth(300).setHeight(100).setCrop("scale")).generate("sample.jpg")!, cloudinary: cloudinary)
The Cloudinary Image Tag helper method allows you to not only specify any Cloudinary transformations parameters, but also to specify regular HTML image tag attributes (e.g., alt, title, width, height). For example, using the Image Tag helper method to create an HTML image tag for the sample image, with the 'alt' attribute set to "A sample photo" and the 'className' attribute set to "Samples":
cl_image_tag("sample.jpg", :alt=>"A sample photo", :className=>"Samples")
cl_image_tag("sample.jpg", array("alt"=>"A sample photo", "className"=>"Samples"))
CloudinaryImage("sample.jpg").image(alt="A sample photo", className="Samples")
cloudinary.image("sample.jpg", {alt: "A sample photo", className: "Samples"})
cloudinary.url().transformation(new Transformation().alt("A sample photo").className("Samples")).imageTag("sample.jpg")
cl.imageTag('sample.jpg', {alt: "A sample photo", className: "Samples"}).toHtml();
$.cloudinary.image("sample.jpg", {alt: "A sample photo", className: "Samples"})
<Image publicId="sample.jpg" > <Transformation alt="A sample photo className="Samples /> </Image>
<cl-image public-id="sample.jpg" > <cl-transformation alt="A sample photo" className="Samples"> </cl-transformation> </cl-image>
For more information on these helper methods, see the documentation for the relevant framework: Ruby on Rails, PHP, Django, Node.js, Java, .NET, Angular, Javascript, React, iOS, Scala and Android.
Resizing and cropping images
You can resize and crop images in order to match the graphic design of your web site or mobile application. Whether images are uploaded in your server-side code or by your users, the original hi-res images are stored in the cloud for further processing and management. You can then dynamically create multiple resized, cropped and manipulated images on-the-fly and deliver them via dynamic URLs.
To change the size of a image, use the width and height parameters (w and h in URLs) to assign new values. You can resize the image by using both the width and height parameters or with only one of them: the other dimension is automatically updated to maintain the aspect ratio.
- Using an integer value sets the new dimension to that number in pixels. For example,
w_150sets the width to exactly 150 pixels. - Using a decimal value sets the new dimension as a multiple of the original dimension. For example,
w_0.5sets the width to half the original width. - Using
ihoriwas values sets the dimension to the initial height or initial width of the original image respectively. For example,w_iwsets the width to the same value as the original width of the image. This may be useful when applying chained transformations or setting the dimensions of an overlay.
Examples of resizing the uploaded jpg image named sample:
Resizing the width to half the original width, maintaining the aspect ratio:
Ruby:cl_image_tag("sample.jpg", :width=>0.5, :crop=>"scale")
PHP:cl_image_tag("sample.jpg", array("width"=>0.5, "crop"=>"scale"))
Python:CloudinaryImage("sample.jpg").image(width=0.5, crop="scale")
Node.js:cloudinary.image("sample.jpg", {width: "0.5", crop: "scale"})
Java:cloudinary.url().transformation(new Transformation().width(0.5).crop("scale")).imageTag("sample.jpg");
JS:cloudinary.imageTag('sample.jpg', {width: "0.5", crop: "scale"}).toHtml();
jQuery:$.cloudinary.image("sample.jpg", {width: "0.5", crop: "scale"})
React:<Image publicId="sample.jpg" > <Transformation width="0.5" crop="scale" /> </Image>
Angular:<cl-image public-id="sample.jpg" > <cl-transformation width="0.5" crop="scale"> </cl-transformation> </cl-image>
.Net:cloudinary.Api.UrlImgUp.Transform(new Transformation().Width(0.5).Crop("scale")).BuildImageTag("sample.jpg")
Android:MediaManager.get().url().transformation(new Transformation().width(0.5).crop("scale")).generate("sample.jpg");
iOS:imageView.cldSetImage(cloudinary.createUrl().setTransformation(CLDTransformation().setWidth(0.5).setCrop("scale")).generate("sample.jpg")!, cloudinary: cloudinary)
Resizing the height to 200 pixels, maintaining the aspect ratio:
Ruby:cl_image_tag("sample.jpg", :height=>200, :crop=>"scale")
PHP:cl_image_tag("sample.jpg", array("height"=>200, "crop"=>"scale"))
Python:CloudinaryImage("sample.jpg").image(height=200, crop="scale")
Node.js:cloudinary.image("sample.jpg", {height: 200, crop: "scale"})
Java:cloudinary.url().transformation(new Transformation().height(200).crop("scale")).imageTag("sample.jpg");
JS:cloudinary.imageTag('sample.jpg', {height: 200, crop: "scale"}).toHtml();
jQuery:$.cloudinary.image("sample.jpg", {height: 200, crop: "scale"})
React:<Image publicId="sample.jpg" > <Transformation height="200" crop="scale" /> </Image>
Angular:<cl-image public-id="sample.jpg" > <cl-transformation height="200" crop="scale"> </cl-transformation> </cl-image>
.Net:cloudinary.Api.UrlImgUp.Transform(new Transformation().Height(200).Crop("scale")).BuildImageTag("sample.jpg")
Android:MediaManager.get().url().transformation(new Transformation().height(200).crop("scale")).generate("sample.jpg");
iOS:imageView.cldSetImage(cloudinary.createUrl().setTransformation(CLDTransformation().setHeight(200).setCrop("scale")).generate("sample.jpg")!, cloudinary: cloudinary)
Resizing to a width of 200 pixels and a height of 100 pixels:
Ruby:cl_image_tag("sample.jpg", :width=>200, :height=>100, :crop=>"scale")
PHP:cl_image_tag("sample.jpg", array("width"=>200, "height"=>100, "crop"=>"scale"))
Python:CloudinaryImage("sample.jpg").image(width=200, height=100, crop="scale")
Node.js:cloudinary.image("sample.jpg", {width: 200, height: 100, crop: "scale"})
Java:cloudinary.url().transformation(new Transformation().width(200).height(100).crop("scale")).imageTag("sample.jpg");
JS:cloudinary.imageTag('sample.jpg', {width: 200, height: 100, crop: "scale"}).toHtml();
jQuery:$.cloudinary.image("sample.jpg", {width: 200, height: 100, crop: "scale"})
React:<Image publicId="sample.jpg" > <Transformation width="200" height="100" crop="scale" /> </Image>
Angular:<cl-image public-id="sample.jpg" > <cl-transformation width="200" height="100" crop="scale"> </cl-transformation> </cl-image>
.Net:cloudinary.Api.UrlImgUp.Transform(new Transformation().Width(200).Height(100).Crop("scale")).BuildImageTag("sample.jpg")
Android:MediaManager.get().url().transformation(new Transformation().width(200).height(100).crop("scale")).generate("sample.jpg");
iOS:imageView.cldSetImage(cloudinary.createUrl().setTransformation(CLDTransformation().setWidth(200).setHeight(100).setCrop("scale")).generate("sample.jpg")!, cloudinary: cloudinary)
When changing the dimensions of an uploaded image by manipulating the image's height and/or width, you need to decide how to adapt or "crop" the image to fit into the requested size. Use the crop parameter for selecting the crop mode (c in URLs). Cloudinary supports the following image cropping modes: scale, fit, mfit, fill, lfill, limit, pad, lpad, mpad, crop, thumb, imagga_crop and imagga_scale.
When creating dynamic delivery URLs, the image is scaled to the new dimensions by default (as in the examples above), unless a different cropping mode is selected. However, there is no default value when using the Cloudinary SDK helper methods (see Embedding images in web pages), and a cropping mode must be explicitly selected:
- Specifying the
widthandheightparameters without acropmode will add them only as parameters of the HTML <img> tag. - Specifying the
widthandheightparameters with acropmode will add them as transformation parameters in the image source URL. Additionally:- For 'fixed' crop modes like
crop,scaleandfill, where thewidthandheightparameters determine the exact final size, the specifiedwidthandheighttransformation parameters are additionally added as parameters of the HTML <img> tag. This way, if an image takes a few moments to load, the required space will already be reserved, preventing surrounding content from jumping when the image loads. - For 'variable' crop modes like
fit,limit,lfill, etc., where the specifiedwidthandheightmay only be a minimum or maximum value, thewidthandheightare only added to the transformation URL and not as parameters of the HTML <img> tag.
- For 'fixed' crop modes like
scale
Change the size of the image exactly to the given width and height without necessarily retaining the original aspect ratio: all original image parts are visible but might be stretched or shrunk. If only the width or height is given, then the image is scaled to the new dimension while retaining the original aspect ratio, unless you also include the ignore_aspect_ratio flag). This is the default cropping mode for resizing images if the crop mode is not specified.
Examples of scaling the uploaded image named sample:
Scaled to a width of 150 pixels (maintains the aspect ratio by default):
Ruby:cl_image_tag("sample.jpg", :width=>150, :crop=>"scale")
PHP:cl_image_tag("sample.jpg", array("width"=>150, "crop"=>"scale"))
Python:CloudinaryImage("sample.jpg").image(width=150, crop="scale")
Node.js:cloudinary.image("sample.jpg", {width: 150, crop: "scale"})
Java:cloudinary.url().transformation(new Transformation().width(150).crop("scale")).imageTag("sample.jpg");
JS:cloudinary.imageTag('sample.jpg', {width: 150, crop: "scale"}).toHtml();
jQuery:$.cloudinary.image("sample.jpg", {width: 150, crop: "scale"})
React:<Image publicId="sample.jpg" > <Transformation width="150" crop="scale" /> </Image>
Angular:<cl-image public-id="sample.jpg" > <cl-transformation width="150" crop="scale"> </cl-transformation> </cl-image>
.Net:cloudinary.Api.UrlImgUp.Transform(new Transformation().Width(150).Crop("scale")).BuildImageTag("sample.jpg")
Android:MediaManager.get().url().transformation(new Transformation().width(150).crop("scale")).generate("sample.jpg");
iOS:imageView.cldSetImage(cloudinary.createUrl().setTransformation(CLDTransformation().setWidth(150).setCrop("scale")).generate("sample.jpg")!, cloudinary: cloudinary)
Scaled to a width and height of 150 pixels without maintaining the aspect ratio:
Ruby:cl_image_tag("sample.jpg", :width=>150, :height=>150, :crop=>"scale")
PHP:cl_image_tag("sample.jpg", array("width"=>150, "height"=>150, "crop"=>"scale"))
Python:CloudinaryImage("sample.jpg").image(width=150, height=150, crop="scale")
Node.js:cloudinary.image("sample.jpg", {width: 150, height: 150, crop: "scale"})
Java:cloudinary.url().transformation(new Transformation().width(150).height(150).crop("scale")).imageTag("sample.jpg");
JS:cloudinary.imageTag('sample.jpg', {width: 150, height: 150, crop: "scale"}).toHtml();
jQuery:$.cloudinary.image("sample.jpg", {width: 150, height: 150, crop: "scale"})
React:<Image publicId="sample.jpg" > <Transformation width="150" height="150" crop="scale" /> </Image>
Angular:<cl-image public-id="sample.jpg" > <cl-transformation width="150" height="150" crop="scale"> </cl-transformation> </cl-image>
.Net:cloudinary.Api.UrlImgUp.Transform(new Transformation().Width(150).Height(150).Crop("scale")).BuildImageTag("sample.jpg")
Android:MediaManager.get().url().transformation(new Transformation().width(150).height(150).crop("scale")).generate("sample.jpg");
iOS:imageView.cldSetImage(cloudinary.createUrl().setTransformation(CLDTransformation().setWidth(150).setHeight(150).setCrop("scale")).generate("sample.jpg")!, cloudinary: cloudinary)
Scaled to a width of 25% (maintains the aspect ratio by default):
Ruby:cl_image_tag("sample.jpg", :width=>0.25, :crop=>"scale")
PHP:cl_image_tag("sample.jpg", array("width"=>0.25, "crop"=>"scale"))
Python:CloudinaryImage("sample.jpg").image(width=0.25, crop="scale")
Node.js:cloudinary.image("sample.jpg", {width: "0.25", crop: "scale"})
Java:cloudinary.url().transformation(new Transformation().width(0.25).crop("scale")).imageTag("sample.jpg");
JS:cloudinary.imageTag('sample.jpg', {width: "0.25", crop: "scale"}).toHtml();
jQuery:$.cloudinary.image("sample.jpg", {width: "0.25", crop: "scale"})
React:<Image publicId="sample.jpg" > <Transformation width="0.25" crop="scale" /> </Image>
Angular:<cl-image public-id="sample.jpg" > <cl-transformation width="0.25" crop="scale"> </cl-transformation> </cl-image>
.Net:cloudinary.Api.UrlImgUp.Transform(new Transformation().Width(0.25).Crop("scale")).BuildImageTag("sample.jpg")
Android:MediaManager.get().url().transformation(new Transformation().width(0.25).crop("scale")).generate("sample.jpg");
iOS:imageView.cldSetImage(cloudinary.createUrl().setTransformation(CLDTransformation().setWidth(0.25).setCrop("scale")).generate("sample.jpg")!, cloudinary: cloudinary)
fit
The image is resized so that it takes up as much space as possible within a bounding box defined by the given width and height parameters. The original aspect ratio is retained and all of the original image is visible.
For example, the uploaded image named sample is resized to fit within a width and height of 250 pixels while retaining the aspect ratio:
cl_image_tag("sample.jpg", :width=>250, :height=>250, :crop=>"fit")
cl_image_tag("sample.jpg", array("width"=>250, "height"=>250, "crop"=>"fit"))
CloudinaryImage("sample.jpg").image(width=250, height=250, crop="fit")
cloudinary.image("sample.jpg", {width: 250, height: 250, crop: "fit"})
cloudinary.url().transformation(new Transformation().width(250).height(250).crop("fit")).imageTag("sample.jpg");
cloudinary.imageTag('sample.jpg', {width: 250, height: 250, crop: "fit"}).toHtml();
$.cloudinary.image("sample.jpg", {width: 250, height: 250, crop: "fit"})
<Image publicId="sample.jpg" > <Transformation width="250" height="250" crop="fit" /> </Image>
<cl-image public-id="sample.jpg" > <cl-transformation width="250" height="250" crop="fit"> </cl-transformation> </cl-image>
cloudinary.Api.UrlImgUp.Transform(new Transformation().Width(250).Height(250).Crop("fit")).BuildImageTag("sample.jpg")
MediaManager.get().url().transformation(new Transformation().width(250).height(250).crop("fit")).generate("sample.jpg");
imageView.cldSetImage(cloudinary.createUrl().setTransformation(CLDTransformation().setWidth(250).setHeight(250).setCrop("fit")).generate("sample.jpg")!, cloudinary: cloudinary)
limit
Same as the fit mode but only if the original image is larger than the given limit (width and height), in which case the image is scaled down so that it takes up as much space as possible within a bounding box defined by the given width and height parameters. The original aspect ratio is retained and all of the original image is visible. This mode doesn't scale up the image if your requested dimensions are larger than the original image's.
For example, the uploaded jpg image named sample limited to a width and height of 250 pixels while retaining the aspect ratio:
cl_image_tag("sample.jpg", :width=>250, :height=>250, :crop=>"limit")
cl_image_tag("sample.jpg", array("width"=>250, "height"=>250, "crop"=>"limit"))
CloudinaryImage("sample.jpg").image(width=250, height=250, crop="limit")
cloudinary.image("sample.jpg", {width: 250, height: 250, crop: "limit"})
cloudinary.url().transformation(new Transformation().width(250).height(250).crop("limit")).imageTag("sample.jpg");
cloudinary.imageTag('sample.jpg', {width: 250, height: 250, crop: "limit"}).toHtml();
$.cloudinary.image("sample.jpg", {width: 250, height: 250, crop: "limit"})
<Image publicId="sample.jpg" > <Transformation width="250" height="250" crop="limit" /> </Image>
<cl-image public-id="sample.jpg" > <cl-transformation width="250" height="250" crop="limit"> </cl-transformation> </cl-image>
cloudinary.Api.UrlImgUp.Transform(new Transformation().Width(250).Height(250).Crop("limit")).BuildImageTag("sample.jpg")
MediaManager.get().url().transformation(new Transformation().width(250).height(250).crop("limit")).generate("sample.jpg");
imageView.cldSetImage(cloudinary.createUrl().setTransformation(CLDTransformation().setWidth(250).setHeight(250).setCrop("limit")).generate("sample.jpg")!, cloudinary: cloudinary)
mfit (minimum fit)
Same as the fit mode but only if the original image is smaller than the given minimum (width and height), in which case the image is scaled up so that it takes up as much space as possible within a bounding box defined by the given width and height parameters. The original aspect ratio is retained and all of the original image is visible. This mode doesn't scale down the image if your requested dimensions are smaller than the original image's.
For example, attempting to fit the uploaded image named sample to a minimum width and height of 250 pixels while retaining the aspect ratio, results in delivering the original larger image:
cl_image_tag("sample.jpg", :width=>250, :height=>250, :crop=>"mfit")
cl_image_tag("sample.jpg", array("width"=>250, "height"=>250, "crop"=>"mfit"))
CloudinaryImage("sample.jpg").image(width=250, height=250, crop="mfit")
cloudinary.image("sample.jpg", {width: 250, height: 250, crop: "mfit"})
cloudinary.url().transformation(new Transformation().width(250).height(250).crop("mfit")).imageTag("sample.jpg");
cloudinary.imageTag('sample.jpg', {width: 250, height: 250, crop: "mfit"}).toHtml();
$.cloudinary.image("sample.jpg", {width: 250, height: 250, crop: "mfit"})
<Image publicId="sample.jpg" > <Transformation width="250" height="250" crop="mfit" /> </Image>
<cl-image public-id="sample.jpg" > <cl-transformation width="250" height="250" crop="mfit"> </cl-transformation> </cl-image>
cloudinary.Api.UrlImgUp.Transform(new Transformation().Width(250).Height(250).Crop("mfit")).BuildImageTag("sample.jpg")
MediaManager.get().url().transformation(new Transformation().width(250).height(250).crop("mfit")).generate("sample.jpg");
imageView.cldSetImage(cloudinary.createUrl().setTransformation(CLDTransformation().setWidth(250).setHeight(250).setCrop("mfit")).generate("sample.jpg")!, cloudinary: cloudinary)
fill
Create an image with the exact given width and height while retaining the original aspect ratio, using only part of the image that fills the given dimensions if necessary (only part of the original image might be visible if the requested aspect ratio is different from the original aspect ratio). You can also specify which part of the original image to use for filling the required dimensions in case the proportions do not match by using the gravity parameter (set to center by default).
Examples of fill used with the uploaded jpg image named sample:
Filled to a width and height of 250 pixels while retaining the aspect ratio:
Ruby:cl_image_tag("sample.jpg", :width=>250, :height=>250, :crop=>"fill")
PHP:cl_image_tag("sample.jpg", array("width"=>250, "height"=>250, "crop"=>"fill"))
Python:CloudinaryImage("sample.jpg").image(width=250, height=250, crop="fill")
Node.js:cloudinary.image("sample.jpg", {width: 250, height: 250, crop: "fill"})
Java:cloudinary.url().transformation(new Transformation().width(250).height(250).crop("fill")).imageTag("sample.jpg");
JS:cloudinary.imageTag('sample.jpg', {width: 250, height: 250, crop: "fill"}).toHtml();
jQuery:$.cloudinary.image("sample.jpg", {width: 250, height: 250, crop: "fill"})
React:<Image publicId="sample.jpg" > <Transformation width="250" height="250" crop="fill" /> </Image>
Angular:<cl-image public-id="sample.jpg" > <cl-transformation width="250" height="250" crop="fill"> </cl-transformation> </cl-image>
.Net:cloudinary.Api.UrlImgUp.Transform(new Transformation().Width(250).Height(250).Crop("fill")).BuildImageTag("sample.jpg")
Android:MediaManager.get().url().transformation(new Transformation().width(250).height(250).crop("fill")).generate("sample.jpg");
iOS:imageView.cldSetImage(cloudinary.createUrl().setTransformation(CLDTransformation().setWidth(250).setHeight(250).setCrop("fill")).generate("sample.jpg")!, cloudinary: cloudinary)
Filled to a width and height of 250 pixels with east gravity:
Ruby:cl_image_tag("sample.jpg", :width=>250, :height=>250, :gravity=>"east", :crop=>"fill")
PHP:cl_image_tag("sample.jpg", array("width"=>250, "height"=>250, "gravity"=>"east", "crop"=>"fill"))
Python:CloudinaryImage("sample.jpg").image(width=250, height=250, gravity="east", crop="fill")
Node.js:cloudinary.image("sample.jpg", {width: 250, height: 250, gravity: "east", crop: "fill"})
Java:cloudinary.url().transformation(new Transformation().width(250).height(250).gravity("east").crop("fill")).imageTag("sample.jpg");
JS:cloudinary.imageTag('sample.jpg', {width: 250, height: 250, gravity: "east", crop: "fill"}).toHtml();
jQuery:$.cloudinary.image("sample.jpg", {width: 250, height: 250, gravity: "east", crop: "fill"})
React:<Image publicId="sample.jpg" > <Transformation width="250" height="250" gravity="east" crop="fill" /> </Image>
Angular:<cl-image public-id="sample.jpg" > <cl-transformation width="250" height="250" gravity="east" crop="fill"> </cl-transformation> </cl-image>
.Net:cloudinary.Api.UrlImgUp.Transform(new Transformation().Width(250).Height(250).Gravity("east").Crop("fill")).BuildImageTag("sample.jpg")
Android:MediaManager.get().url().transformation(new Transformation().width(250).height(250).gravity("east").crop("fill")).generate("sample.jpg");
iOS:imageView.cldSetImage(cloudinary.createUrl().setTransformation(CLDTransformation().setWidth(250).setHeight(250).setGravity("east").setCrop("fill")).generate("sample.jpg")!, cloudinary: cloudinary)
lfill (limit fill)
Same as the fill mode but only if the original image is larger than the given limit (width and height), in which case the image is scaled down to fill the given width and height while retaining the original aspect ratio, using only part of the image that fills the given dimensions if necessary (only part of the original image might be visible if the requested aspect ratio is different from the original aspect ratio). You can also specify which part of the original image to use for filling the required dimensions in case the proportions do not match by using the gravity parameter. This mode doesn't scale up the image if your requested dimensions are bigger than the original image's.
For example, the uploaded image named sample limit filled to a width of 150 pixels and a height of 200 pixels while retaining the aspect ratio and limiting the size to no larger than the original image:
cl_image_tag("sample.jpg", :width=>150, :height=>200, :crop=>"lfill")
cl_image_tag("sample.jpg", array("width"=>150, "height"=>200, "crop"=>"lfill"))
CloudinaryImage("sample.jpg").image(width=150, height=200, crop="lfill")
cloudinary.image("sample.jpg", {width: 150, height: 200, crop: "lfill"})
cloudinary.url().transformation(new Transformation().width(150).height(200).crop("lfill")).imageTag("sample.jpg");
cloudinary.imageTag('sample.jpg', {width: 150, height: 200, crop: "lfill"}).toHtml();
$.cloudinary.image("sample.jpg", {width: 150, height: 200, crop: "lfill"})
<Image publicId="sample.jpg" > <Transformation width="150" height="200" crop="lfill" /> </Image>
<cl-image public-id="sample.jpg" > <cl-transformation width="150" height="200" crop="lfill"> </cl-transformation> </cl-image>
cloudinary.Api.UrlImgUp.Transform(new Transformation().Width(150).Height(200).Crop("lfill")).BuildImageTag("sample.jpg")
MediaManager.get().url().transformation(new Transformation().width(150).height(200).crop("lfill")).generate("sample.jpg");
imageView.cldSetImage(cloudinary.createUrl().setTransformation(CLDTransformation().setWidth(150).setHeight(200).setCrop("lfill")).generate("sample.jpg")!, cloudinary: cloudinary)
pad
Resize the image to fill the given width and height while retaining the original aspect ratio and with all of the original image visible. If the proportions of the original image do not match the given width and height, padding is added to the image to reach the required size. You can also specify where the original image is placed by using the gravity parameter (set to center by default), and specify the color of the background in the case that padding is added.
For example, the uploaded jpg image named sample padded with a black background to a width and height of 250 pixels:
cl_image_tag("sample.jpg", :width=>250, :height=>250, :background=>"black", :crop=>"pad")
cl_image_tag("sample.jpg", array("width"=>250, "height"=>250, "background"=>"black", "crop"=>"pad"))
CloudinaryImage("sample.jpg").image(width=250, height=250, background="black", crop="pad")
cloudinary.image("sample.jpg", {width: 250, height: 250, background: "black", crop: "pad"})
cloudinary.url().transformation(new Transformation().width(250).height(250).background("black").crop("pad")).imageTag("sample.jpg");
cloudinary.imageTag('sample.jpg', {width: 250, height: 250, background: "black", crop: "pad"}).toHtml();
$.cloudinary.image("sample.jpg", {width: 250, height: 250, background: "black", crop: "pad"})
<Image publicId="sample.jpg" > <Transformation width="250" height="250" background="black" crop="pad" /> </Image>
<cl-image public-id="sample.jpg" > <cl-transformation width="250" height="250" background="black" crop="pad"> </cl-transformation> </cl-image>
cloudinary.Api.UrlImgUp.Transform(new Transformation().Width(250).Height(250).Background("black").Crop("pad")).BuildImageTag("sample.jpg")
MediaManager.get().url().transformation(new Transformation().width(250).height(250).background("black").crop("pad")).generate("sample.jpg");
imageView.cldSetImage(cloudinary.createUrl().setTransformation(CLDTransformation().setWidth(250).setHeight(250).setBackground("black").setCrop("pad")).generate("sample.jpg")!, cloudinary: cloudinary)
lpad (limit pad)
Same as the pad mode but only if the original image is larger than the given limit (width and height), in which case the image is scaled down to fill the given width and height while retaining the original aspect ratio and with all of the original image visible. This mode doesn't scale up the image if your requested dimensions are bigger than the original image's. If the proportions of the original image do not match the given width and height, padding is added to the image to reach the required size. You can also specify where the original image is placed by using the gravity parameter (set to center by default), and specify the color of the background in the case that padding is added.
For example, the uploaded jpg image named sample limit padded with a green background to a width of 400 pixels and a height of 150 pixels:
cl_image_tag("sample.jpg", :width=>400, :height=>150, :background=>"green", :crop=>"lpad")
cl_image_tag("sample.jpg", array("width"=>400, "height"=>150, "background"=>"green", "crop"=>"lpad"))
CloudinaryImage("sample.jpg").image(width=400, height=150, background="green", crop="lpad")
cloudinary.image("sample.jpg", {width: 400, height: 150, background: "green", crop: "lpad"})
cloudinary.url().transformation(new Transformation().width(400).height(150).background("green").crop("lpad")).imageTag("sample.jpg");
cloudinary.imageTag('sample.jpg', {width: 400, height: 150, background: "green", crop: "lpad"}).toHtml();
$.cloudinary.image("sample.jpg", {width: 400, height: 150, background: "green", crop: "lpad"})
<Image publicId="sample.jpg" > <Transformation width="400" height="150" background="green" crop="lpad" /> </Image>
<cl-image public-id="sample.jpg" > <cl-transformation width="400" height="150" background="green" crop="lpad"> </cl-transformation> </cl-image>
cloudinary.Api.UrlImgUp.Transform(new Transformation().Width(400).Height(150).Background("green").Crop("lpad")).BuildImageTag("sample.jpg")
MediaManager.get().url().transformation(new Transformation().width(400).height(150).background("green").crop("lpad")).generate("sample.jpg");
imageView.cldSetImage(cloudinary.createUrl().setTransformation(CLDTransformation().setWidth(400).setHeight(150).setBackground("green").setCrop("lpad")).generate("sample.jpg")!, cloudinary: cloudinary)
mpad (minimum pad)
Same as the pad mode but only if the original image is smaller than the given minimum (width and height), in which case the image is scaled up to fill the given width and height while retaining the original aspect ratio and with all of the original image visible. This mode doesn't scale down the image if your requested dimensions are smaller than the original image's. If the proportions of the original image do not match the given width and height, padding is added to the image to reach the required size. You can also specify where the original image is placed by using the gravity parameter (set to center by default), and specify the color of the background in the case that padding is added.
For example, attempting to minimum pad the uploaded image named sample to a width and height of 250 pixels while retaining the aspect ratio, results in delivering the original larger image:
cl_image_tag("sample.jpg", :width=>250, :height=>250, :crop=>"mpad")
cl_image_tag("sample.jpg", array("width"=>250, "height"=>250, "crop"=>"mpad"))
CloudinaryImage("sample.jpg").image(width=250, height=250, crop="mpad")
cloudinary.image("sample.jpg", {width: 250, height: 250, crop: "mpad"})
cloudinary.url().transformation(new Transformation().width(250).height(250).crop("mpad")).imageTag("sample.jpg");
cloudinary.imageTag('sample.jpg', {width: 250, height: 250, crop: "mpad"}).toHtml();
$.cloudinary.image("sample.jpg", {width: 250, height: 250, crop: "mpad"})
<Image publicId="sample.jpg" > <Transformation width="250" height="250" crop="mpad" /> </Image>
<cl-image public-id="sample.jpg" > <cl-transformation width="250" height="250" crop="mpad"> </cl-transformation> </cl-image>
cloudinary.Api.UrlImgUp.Transform(new Transformation().Width(250).Height(250).Crop("mpad")).BuildImageTag("sample.jpg")
MediaManager.get().url().transformation(new Transformation().width(250).height(250).crop("mpad")).generate("sample.jpg");
imageView.cldSetImage(cloudinary.createUrl().setTransformation(CLDTransformation().setWidth(250).setHeight(250).setCrop("mpad")).generate("sample.jpg")!, cloudinary: cloudinary)
fill_pad
Tries to prevent a "bad crop" by first attempting to use the fill mode, but adding padding if it is determined that more of the original image needs to be included in the final image. Especially useful if the aspect ratio of the delivered image is considerably different from the original's aspect ratio. Only supported in conjunction with Automatic cropping (g_auto).
For example, the uploaded jpg image named lady delivered as a 80x400 image using the fill mode on the left, and the fill_pad mode on the right:
fill
fill_pad
cl_image_tag("lady.jpg", :width=>80, :height=>400, :gravity=>"auto", :background=>"auto", :crop=>"fill_pad")
cl_image_tag("lady.jpg", array("width"=>80, "height"=>400, "gravity"=>"auto", "background"=>"auto", "crop"=>"fill_pad"))
CloudinaryImage("lady.jpg").image(width=80, height=400, gravity="auto", background="auto", crop="fill_pad")
cloudinary.image("lady.jpg", {width: 80, height: 400, gravity: "auto", background: "auto", crop: "fill_pad"})
cloudinary.url().transformation(new Transformation().width(80).height(400).gravity("auto").background("auto").crop("fill_pad")).imageTag("lady.jpg");
cloudinary.imageTag('lady.jpg', {width: 80, height: 400, gravity: "auto", background: "auto", crop: "fill_pad"}).toHtml();
$.cloudinary.image("lady.jpg", {width: 80, height: 400, gravity: "auto", background: "auto", crop: "fill_pad"})
<Image publicId="lady.jpg" > <Transformation width="80" height="400" gravity="auto" background="auto" crop="fill_pad" /> </Image>
<cl-image public-id="lady.jpg" > <cl-transformation width="80" height="400" gravity="auto" background="auto" crop="fill_pad"> </cl-transformation> </cl-image>
cloudinary.Api.UrlImgUp.Transform(new Transformation().Width(80).Height(400).Gravity("auto").Background("auto").Crop("fill_pad")).BuildImageTag("lady.jpg")
MediaManager.get().url().transformation(new Transformation().width(80).height(400).gravity("auto").background("auto").crop("fill_pad")).generate("lady.jpg");
imageView.cldSetImage(cloudinary.createUrl().setTransformation(CLDTransformation().setWidth(80).setHeight(400).setGravity("auto").setBackground("auto").setCrop("fill_pad")).generate("lady.jpg")!, cloudinary: cloudinary)
crop
Extract a region of the given width and height out of the original image. The original proportions are retained and so is the size of the graphics. You can specify the gravity parameter to select which part of the image to extract, or use fixed coordinates cropping.
For example, the uploaded jpg image named sample cropped to a width of 200 pixels, a height of 150 pixels, with northwest gravity:
cl_image_tag("sample.jpg", :width=>200, :height=>150, :gravity=>"north_west", :crop=>"crop")
cl_image_tag("sample.jpg", array("width"=>200, "height"=>150, "gravity"=>"north_west", "crop"=>"crop"))
CloudinaryImage("sample.jpg").image(width=200, height=150, gravity="north_west", crop="crop")
cloudinary.image("sample.jpg", {width: 200, height: 150, gravity: "north_west", crop: "crop"})
cloudinary.url().transformation(new Transformation().width(200).height(150).gravity("north_west").crop("crop")).imageTag("sample.jpg");
cloudinary.imageTag('sample.jpg', {width: 200, height: 150, gravity: "north_west", crop: "crop"}).toHtml();
$.cloudinary.image("sample.jpg", {width: 200, height: 150, gravity: "north_west", crop: "crop"})
<Image publicId="sample.jpg" > <Transformation width="200" height="150" gravity="north_west" crop="crop" /> </Image>
<cl-image public-id="sample.jpg" > <cl-transformation width="200" height="150" gravity="north_west" crop="crop"> </cl-transformation> </cl-image>
cloudinary.Api.UrlImgUp.Transform(new Transformation().Width(200).Height(150).Gravity("north_west").Crop("crop")).BuildImageTag("sample.jpg")
MediaManager.get().url().transformation(new Transformation().width(200).height(150).gravity("north_west").crop("crop")).generate("sample.jpg");
imageView.cldSetImage(cloudinary.createUrl().setTransformation(CLDTransformation().setWidth(200).setHeight(150).setGravity("north_west").setCrop("crop")).generate("sample.jpg")!, cloudinary: cloudinary)
Fixed coordinates cropping
You can specify a region of the original image to crop by giving the x and y coordinates of the top left corner of the region together with the width and height of the region. You can also use percentage based numbers instead of the exact coordinates for x, y, w and h (e.g., 0.5 for 50%) . Use this method when you know beforehand what the correct absolute cropping coordinates are, as in when your users manually select the region to crop out of the original image.
For example, the following image shows many white sheep and one brown sheep.
cl_image_tag("brown_sheep.jpg")cl_image_tag("brown_sheep.jpg")CloudinaryImage("brown_sheep.jpg").image()cloudinary.image("brown_sheep.jpg")cloudinary.url().imageTag("brown_sheep.jpg");cloudinary.imageTag('brown_sheep.jpg').toHtml();$.cloudinary.image("brown_sheep.jpg")
<Image publicId="brown_sheep.jpg" > </Image>
<cl-image public-id="brown_sheep.jpg" > </cl-image>
cloudinary.Api.UrlImgUp.BuildImageTag("brown_sheep.jpg")MediaManager.get().url().generate("brown_sheep.jpg");imageView.cldSetImage(cloudinary.createUrl().generate("brown_sheep.jpg")!, cloudinary: cloudinary)
To manipulate the picture so that only the brown sheep is visible, the image is cropped to a 300x200 region starting at the coordinate x = 355 and y = 410:
cl_image_tag("brown_sheep.jpg", :x=>355, :y=>410, :width=>300, :height=>200, :crop=>"crop")
cl_image_tag("brown_sheep.jpg", array("x"=>355, "y"=>410, "width"=>300, "height"=>200, "crop"=>"crop"))
CloudinaryImage("brown_sheep.jpg").image(x=355, y=410, width=300, height=200, crop="crop")
cloudinary.image("brown_sheep.jpg", {x: 355, y: 410, width: 300, height: 200, crop: "crop"})
cloudinary.url().transformation(new Transformation().x(355).y(410).width(300).height(200).crop("crop")).imageTag("brown_sheep.jpg");
cloudinary.imageTag('brown_sheep.jpg', {x: 355, y: 410, width: 300, height: 200, crop: "crop"}).toHtml();
$.cloudinary.image("brown_sheep.jpg", {x: 355, y: 410, width: 300, height: 200, crop: "crop"})
<Image publicId="brown_sheep.jpg" > <Transformation x="355" y="410" width="300" height="200" crop="crop" /> </Image>
<cl-image public-id="brown_sheep.jpg" > <cl-transformation x="355" y="410" width="300" height="200" crop="crop"> </cl-transformation> </cl-image>
cloudinary.Api.UrlImgUp.Transform(new Transformation().X(355).Y(410).Width(300).Height(200).Crop("crop")).BuildImageTag("brown_sheep.jpg")
MediaManager.get().url().transformation(new Transformation().x(355).y(410).width(300).height(200).crop("crop")).generate("brown_sheep.jpg");
imageView.cldSetImage(cloudinary.createUrl().setTransformation(CLDTransformation().setX(355).setY(410).setWidth(300).setHeight(200).setCrop("crop")).generate("brown_sheep.jpg")!, cloudinary: cloudinary)
The image can be further manipulated with chained transformations. For example, the 300x200 cropped version above, also scaled down to 150x100:
cl_image_tag("brown_sheep.jpg", :transformation=>[ {:x=>355, :y=>410, :width=>300, :height=>200, :crop=>"crop"}, {:width=>150, :height=>100, :crop=>"scale"} ])
cl_image_tag("brown_sheep.jpg", array("transformation"=>array( array("x"=>355, "y"=>410, "width"=>300, "height"=>200, "crop"=>"crop"), array("width"=>150, "height"=>100, "crop"=>"scale") )))
CloudinaryImage("brown_sheep.jpg").image(transformation=[ {"x": 355, "y": 410, "width": 300, "height": 200, "crop": "crop"}, {"width": 150, "height": 100, "crop": "scale"} ])
cloudinary.image("brown_sheep.jpg", {transformation: [ {x: 355, y: 410, width: 300, height: 200, crop: "crop"}, {width: 150, height: 100, crop: "scale"} ]})
cloudinary.url().transformation(new Transformation() .x(355).y(410).width(300).height(200).crop("crop").chain() .width(150).height(100).crop("scale")).imageTag("brown_sheep.jpg");
cloudinary.imageTag('brown_sheep.jpg', {transformation: [ {x: 355, y: 410, width: 300, height: 200, crop: "crop"}, {width: 150, height: 100, crop: "scale"} ]}).toHtml();
$.cloudinary.image("brown_sheep.jpg", {transformation: [ {x: 355, y: 410, width: 300, height: 200, crop: "crop"}, {width: 150, height: 100, crop: "scale"} ]})
<Image publicId="brown_sheep.jpg" > <Transformation x="355" y="410" width="300" height="200" crop="crop" /> <Transformation width="150" height="100" crop="scale" /> </Image>
<cl-image public-id="brown_sheep.jpg" > <cl-transformation x="355" y="410" width="300" height="200" crop="crop"> </cl-transformation> <cl-transformation width="150" height="100" crop="scale"> </cl-transformation> </cl-image>
cloudinary.Api.UrlImgUp.Transform(new Transformation() .X(355).Y(410).Width(300).Height(200).Crop("crop").Chain() .Width(150).Height(100).Crop("scale")).BuildImageTag("brown_sheep.jpg")
MediaManager.get().url().transformation(new Transformation() .x(355).y(410).width(300).height(200).crop("crop").chain() .width(150).height(100).crop("scale")).generate("brown_sheep.jpg");
imageView.cldSetImage(cloudinary.createUrl().setTransformation(CLDTransformation() .setX(355).setY(410).setWidth(300).setHeight(200).setCrop("crop").chain() .setWidth(150).setHeight(100).setCrop("scale")).generate("brown_sheep.jpg")!, cloudinary: cloudinary)
thumb
The thumb cropping mode is specifically used for creating image thumbnails from either face or custom coordinates, and must always be accompanied by the gravity parameter set to one of the face detection or custom values. This cropping mode generates a thumbnail of an image with the exact given width and height dimensions and with the original proportions retained, but the resulting image might be scaled to fit in the given dimensions. You can specify the zoom parameter to determine how much to scale the resulting image within the given width and height.
For example, creating a 150x150 thumbnail with face detection, of the uploaded image called woman. Below you can see the original image as well as the face detection based thumbnail:
cl_image_tag("woman.jpg", :gravity=>"face", :width=>150, :height=>150, :crop=>"thumb")
cl_image_tag("woman.jpg", array("gravity"=>"face", "width"=>150, "height"=>150, "crop"=>"thumb"))
CloudinaryImage("woman.jpg").image(gravity="face", width=150, height=150, crop="thumb")
cloudinary.image("woman.jpg", {gravity: "face", width: 150, height: 150, crop: "thumb"})
cloudinary.url().transformation(new Transformation().gravity("face").width(150).height(150).crop("thumb")).imageTag("woman.jpg");
cloudinary.imageTag('woman.jpg', {gravity: "face", width: 150, height: 150, crop: "thumb"}).toHtml();
$.cloudinary.image("woman.jpg", {gravity: "face", width: 150, height: 150, crop: "thumb"})
<Image publicId="woman.jpg" > <Transformation gravity="face" width="150" height="150" crop="thumb" /> </Image>
<cl-image public-id="woman.jpg" > <cl-transformation gravity="face" width="150" height="150" crop="thumb"> </cl-transformation> </cl-image>
cloudinary.Api.UrlImgUp.Transform(new Transformation().Gravity("face").Width(150).Height(150).Crop("thumb")).BuildImageTag("woman.jpg")
MediaManager.get().url().transformation(new Transformation().gravity("face").width(150).height(150).crop("thumb")).generate("woman.jpg");
imageView.cldSetImage(cloudinary.createUrl().setTransformation(CLDTransformation().setGravity("face").setWidth(150).setHeight(150).setCrop("thumb")).generate("woman.jpg")!, cloudinary: cloudinary)
Imagga crop and scale
The Imagga Crop and Scale add-on can be used to smartly scale and crop your images based on automatically calculated areas of interest within each specific photo. See the Imagga Crop and Scale add-on documentation for more information.
For example, the original image:
cl_image_tag("family_bench.jpg")cl_image_tag("family_bench.jpg")CloudinaryImage("family_bench.jpg").image()cloudinary.image("family_bench.jpg")cloudinary.url().imageTag("family_bench.jpg");cloudinary.imageTag('family_bench.jpg').toHtml();$.cloudinary.image("family_bench.jpg")
<Image publicId="family_bench.jpg" > </Image>
<cl-image public-id="family_bench.jpg" > </cl-image>
cloudinary.Api.UrlImgUp.BuildImageTag("family_bench.jpg")MediaManager.get().url().generate("family_bench.jpg");imageView.cldSetImage(cloudinary.createUrl().generate("family_bench.jpg")!, cloudinary: cloudinary)
Image with Imagga cropping:
cl_image_tag("family_bench.jpg", :crop=>"imagga_crop")
cl_image_tag("family_bench.jpg", array("crop"=>"imagga_crop"))
CloudinaryImage("family_bench.jpg").image(crop="imagga_crop")
cloudinary.image("family_bench.jpg", {crop: "imagga_crop"})
cloudinary.url().transformation(new Transformation().crop("imagga_crop")).imageTag("family_bench.jpg");
cloudinary.imageTag('family_bench.jpg', {crop: "imagga_crop"}).toHtml();
$.cloudinary.image("family_bench.jpg", {crop: "imagga_crop"})
<Image publicId="family_bench.jpg" > <Transformation crop="imagga_crop" /> </Image>
<cl-image public-id="family_bench.jpg" > <cl-transformation crop="imagga_crop"> </cl-transformation> </cl-image>
cloudinary.Api.UrlImgUp.Transform(new Transformation().Crop("imagga_crop")).BuildImageTag("family_bench.jpg")
MediaManager.get().url().transformation(new Transformation().crop("imagga_crop")).generate("family_bench.jpg");
imageView.cldSetImage(cloudinary.createUrl().setTransformation(CLDTransformation().setCrop("imagga_crop")).generate("family_bench.jpg")!, cloudinary: cloudinary)
Aspect ratio based cropping
Use the aspect_ratio parameter (ar in URLs) to resize or crop the image to a new aspect ratio. This parameter is used together with a specified crop mode (scale, fill, lfill, pad, lpad, mpad or crop), that determines how the image is adjusted to the new dimensions. This parameter can also be used when changing the dimensions of an image with only the width or height parameters (w and h in URLs) - the other dimension is then automatically updated to maintain the given aspect ratio.
The aspect_ratio parameter accepts a value in one of the following forms:
a:bwhereasignifies the relative width andbthe relative height (e.g., 4:3 or 16:9).- a decimal value representing the ratio of the width divided by the height (e.g., 1.33 or 2.5).
Examples with the uploaded image named sample:
- Cropped to an aspect ratio of 2.5:
Ruby:
cl_image_tag("sample.jpg", :aspect_ratio=>"2.5", :crop=>"crop")
PHP:cl_image_tag("sample.jpg", array("aspect_ratio"=>"2.5", "crop"=>"crop"))
Python:CloudinaryImage("sample.jpg").image(aspect_ratio="2.5", crop="crop")
Node.js:cloudinary.image("sample.jpg", {aspect_ratio: "2.5", crop: "crop"})
Java:cloudinary.url().transformation(new Transformation().aspectRatio("2.5").crop("crop")).imageTag("sample.jpg");
JS:cloudinary.imageTag('sample.jpg', {aspectRatio: "2.5", crop: "crop"}).toHtml();
jQuery:$.cloudinary.image("sample.jpg", {aspect_ratio: "2.5", crop: "crop"})
React:<Image publicId="sample.jpg" > <Transformation aspectRatio="2.5" crop="crop" /> </Image>
Angular:<cl-image public-id="sample.jpg" > <cl-transformation aspect-ratio="2.5" crop="crop"> </cl-transformation> </cl-image>
.Net:cloudinary.Api.UrlImgUp.Transform(new Transformation().AspectRatio("2.5").Crop("crop")).BuildImageTag("sample.jpg")
Android:MediaManager.get().url().transformation(new Transformation().aspectRatio("2.5").crop("crop")).generate("sample.jpg");
iOS:imageView.cldSetImage(cloudinary.createUrl().setTransformation(CLDTransformation().setAspectRatio("2.5").setCrop("crop")).generate("sample.jpg")!, cloudinary: cloudinary)
- Filled to an aspect ratio of 16:9:
Ruby:
cl_image_tag("sample.jpg", :aspect_ratio=>"16:9", :crop=>"fill")
PHP:cl_image_tag("sample.jpg", array("aspect_ratio"=>"16:9", "crop"=>"fill"))
Python:CloudinaryImage("sample.jpg").image(aspect_ratio="16:9", crop="fill")
Node.js:cloudinary.image("sample.jpg", {aspect_ratio: "16:9", crop: "fill"})
Java:cloudinary.url().transformation(new Transformation().aspectRatio("16:9").crop("fill")).imageTag("sample.jpg");
JS:cloudinary.imageTag('sample.jpg', {aspectRatio: "16:9", crop: "fill"}).toHtml();
jQuery:$.cloudinary.image("sample.jpg", {aspect_ratio: "16:9", crop: "fill"})
React:<Image publicId="sample.jpg" > <Transformation aspectRatio="16:9" crop="fill" /> </Image>
Angular:<cl-image public-id="sample.jpg" > <cl-transformation aspect-ratio="16:9" crop="fill"> </cl-transformation> </cl-image>
.Net:cloudinary.Api.UrlImgUp.Transform(new Transformation().AspectRatio("16:9").Crop("fill")).BuildImageTag("sample.jpg")
Android:MediaManager.get().url().transformation(new Transformation().aspectRatio("16:9").crop("fill")).generate("sample.jpg");
iOS:imageView.cldSetImage(cloudinary.createUrl().setTransformation(CLDTransformation().setAspectRatio("16:9").setCrop("fill")).generate("sample.jpg")!, cloudinary: cloudinary)
- Filled to a width of 400 pixels with an aspect ratio of 4:3:
Ruby:
cl_image_tag("sample.jpg", :width=>400, :aspect_ratio=>"4:3", :crop=>"fill")
PHP:cl_image_tag("sample.jpg", array("width"=>400, "aspect_ratio"=>"4:3", "crop"=>"fill"))
Python:CloudinaryImage("sample.jpg").image(width=400, aspect_ratio="4:3", crop="fill")
Node.js:cloudinary.image("sample.jpg", {width: 400, aspect_ratio: "4:3", crop: "fill"})
Java:cloudinary.url().transformation(new Transformation().width(400).aspectRatio("4:3").crop("fill")).imageTag("sample.jpg");
JS:cloudinary.imageTag('sample.jpg', {width: 400, aspectRatio: "4:3", crop: "fill"}).toHtml();
jQuery:$.cloudinary.image("sample.jpg", {width: 400, aspect_ratio: "4:3", crop: "fill"})
React:<Image publicId="sample.jpg" > <Transformation width="400" aspectRatio="4:3" crop="fill" /> </Image>
Angular:<cl-image public-id="sample.jpg" > <cl-transformation width="400" aspect-ratio="4:3" crop="fill"> </cl-transformation> </cl-image>
.Net:cloudinary.Api.UrlImgUp.Transform(new Transformation().Width(400).AspectRatio("4:3").Crop("fill")).BuildImageTag("sample.jpg")
Android:MediaManager.get().url().transformation(new Transformation().width(400).aspectRatio("4:3").crop("fill")).generate("sample.jpg");
iOS:imageView.cldSetImage(cloudinary.createUrl().setTransformation(CLDTransformation().setWidth(400).setAspectRatio("4:3").setCrop("fill")).generate("sample.jpg")!, cloudinary: cloudinary)
Set Device Pixel Ratio (DPR)
Different devices support different DPR values, which is defined as the ratio between physical pixels and logical pixels. This means that a device with support for a higher DPR uses more physical pixels for displaying an image, resulting in a clearer, sharper image.
Use the dpr parameter to set the DPR value of the delivered image. The parameter accepts a numeric value specifying the DPR multiplier.
The dpr parameter is especially useful when adding overlays, as you need the overlay image to be correctly resized according to the required pixel density of the device (along with the containing image). Setting the dpr transformation parameter applies the same resizing rules both to the containing image, and the included overlay.
For example, the following URL dynamically generates a 100x100 face-detection-based circular thumbnail of an image named lady, and adds another image named cloudinary_icon as a semi-transparent watermark with a width of 50 pixels. Setting the dpr value to 1.0, 2.0 (as in the code example) or 3.0 generates the following images, while resizing both the containing image and the overlay to match the required DPR.
cl_image_tag("lady.jpg", :transformation=>[ {:width=>100, :height=>100, :gravity=>"face", :radius=>"max", :crop=>"thumb"}, {:overlay=>"cloudinary_icon", :effect=>"brightness:200", :flags=>"relative", :width=>0.5, :opacity=>60}, {:dpr=>2.0} ])
cl_image_tag("lady.jpg", array("transformation"=>array( array("width"=>100, "height"=>100, "gravity"=>"face", "radius"=>"max", "crop"=>"thumb"), array("overlay"=>"cloudinary_icon", "effect"=>"brightness:200", "flags"=>"relative", "width"=>0.5, "opacity"=>60), array("dpr"=>2.0) )))
CloudinaryImage("lady.jpg").image(transformation=[ {"width": 100, "height": 100, "gravity": "face", "radius": "max", "crop": "thumb"}, {"overlay": "cloudinary_icon", "effect": "brightness:200", "flags": "relative", "width": 0.5, "opacity": 60}, {"dpr": 2.0} ])
cloudinary.image("lady.jpg", {transformation: [ {width: 100, height: 100, gravity: "face", radius: "max", crop: "thumb"}, {overlay: "cloudinary_icon", effect: "brightness:200", flags: "relative", width: "0.5", opacity: 60}, {dpr: "2.0"} ]})
cloudinary.url().transformation(new Transformation() .width(100).height(100).gravity("face").radius("max").crop("thumb").chain() .overlay("cloudinary_icon").effect("brightness:200").flags("relative").width(0.5).opacity(60).chain() .dpr(2.0)).imageTag("lady.jpg");
cloudinary.imageTag('lady.jpg', {transformation: [ {width: 100, height: 100, gravity: "face", radius: "max", crop: "thumb"}, {overlay: "cloudinary_icon", effect: "brightness:200", flags: "relative", width: "0.5", opacity: 60}, {dpr: "2.0"} ]}).toHtml();
$.cloudinary.image("lady.jpg", {transformation: [ {width: 100, height: 100, gravity: "face", radius: "max", crop: "thumb"}, {overlay: "cloudinary_icon", effect: "brightness:200", flags: "relative", width: "0.5", opacity: 60}, {dpr: "2.0"} ]})
<Image publicId="lady.jpg" > <Transformation width="100" height="100" gravity="face" radius="max" crop="thumb" /> <Transformation overlay="cloudinary_icon" effect="brightness:200" flags="relative" width="0.5" opacity="60" /> <Transformation dpr="2.0" /> </Image>
<cl-image public-id="lady.jpg" > <cl-transformation width="100" height="100" gravity="face" radius="max" crop="thumb"> </cl-transformation> <cl-transformation overlay="cloudinary_icon" effect="brightness:200" flags="relative" width="0.5" opacity="60"> </cl-transformation> <cl-transformation dpr="2.0"> </cl-transformation> </cl-image>
cloudinary.Api.UrlImgUp.Transform(new Transformation() .Width(100).Height(100).Gravity("face").Radius("max").Crop("thumb").Chain() .Overlay("cloudinary_icon").Effect("brightness:200").Flags("relative").Width(0.5).Opacity(60).Chain() .Dpr(2.0)).BuildImageTag("lady.jpg")
MediaManager.get().url().transformation(new Transformation() .width(100).height(100).gravity("face").radius("max").crop("thumb").chain() .overlay("cloudinary_icon").effect("brightness:200").flags("relative").width(0.5).opacity(60).chain() .dpr(2.0)).generate("lady.jpg");
imageView.cldSetImage(cloudinary.createUrl().setTransformation(CLDTransformation() .setWidth(100).setHeight(100).setGravity("face").setRadius("max").setCrop("thumb").chain() .setOverlay("cloudinary_icon").setEffect("brightness:200").setFlags("relative").setWidth(0.5).setOpacity(60).chain() .setDpr(2.0)).generate("lady.jpg")!, cloudinary: cloudinary)
DPR 1.0 DPR 2.0 DPR 3.0
Now you can create a 100x100 HTML image tag and deliver an image with the resolution that best matches the specified pixel density of your users' devices. The three images below are all displayed within a 100x100 logical square using the <img> tag width and height attributes, while you see more details and a better visual result for the last two images if you view this documentation using a device that supports a higher DPR.
<img src="https://res.cloudinary.com/demo/image/upload/c_thumb,w_100,h_100,g_face,r_max/l_cloudinary_icon,e_brightness:200,w_50,o_60/dpr_2.0/lady.jpg" height=100 width=100 />
DPR 1.0 (100x100, 4.1KB) DPR 2.0 (200x200, 10.1KB) DPR 3.0 (300x300, 22.3KB)
You can alternatively use dpr_auto to automatically deliver the best image, depending on the requesting device's support for DPR. For details, see the Responsive images documentation.
Control gravity
The gravity parameter (g in URLs) is used to specify a location in the image that is used as the focus for another transformation:
- For certain cropping modes, gravity specifies which part of the original image to focus on (include) when the resulting image is smaller than than the original or the proportions do not match.
- For placing underlays, overlays or text captions, gravity specifies where to place them in relation to the original image.
The basic gravity value is specified by giving a compass direction to focus on: north_east, north, north_west, west, south_west, south, south_east, east, or center (the default value). The compass direction represents a location in the image, for example, north_east represents the top right corner.
For example, the uploaded jpg image named sample filled to a width and height of 250 pixels while retaining the aspect ratio:
- Original image: Ruby:
cl_image_tag("sample.jpg")PHP:cl_image_tag("sample.jpg")Python:CloudinaryImage("sample.jpg").image()Node.js:cloudinary.image("sample.jpg")Java:cloudinary.url().imageTag("sample.jpg");JS:cloudinary.imageTag('sample.jpg').toHtml();jQuery:$.cloudinary.image("sample.jpg")
React:<Image publicId="sample.jpg" > </Image>
Angular:<cl-image public-id="sample.jpg" > </cl-image>
.Net:cloudinary.Api.UrlImgUp.BuildImageTag("sample.jpg")Android:MediaManager.get().url().generate("sample.jpg");iOS:imageView.cldSetImage(cloudinary.createUrl().generate("sample.jpg")!, cloudinary: cloudinary)
- With gravity set to north: Ruby:
cl_image_tag("sample.jpg", :width=>250, :height=>250, :gravity=>"north", :crop=>"fill")
PHP:cl_image_tag("sample.jpg", array("width"=>250, "height"=>250, "gravity"=>"north", "crop"=>"fill"))
Python:CloudinaryImage("sample.jpg").image(width=250, height=250, gravity="north", crop="fill")
Node.js:cloudinary.image("sample.jpg", {width: 250, height: 250, gravity: "north", crop: "fill"})
Java:cloudinary.url().transformation(new Transformation().width(250).height(250).gravity("north").crop("fill")).imageTag("sample.jpg");
JS:cloudinary.imageTag('sample.jpg', {width: 250, height: 250, gravity: "north", crop: "fill"}).toHtml();
jQuery:$.cloudinary.image("sample.jpg", {width: 250, height: 250, gravity: "north", crop: "fill"})
React:<Image publicId="sample.jpg" > <Transformation width="250" height="250" gravity="north" crop="fill" /> </Image>
Angular:<cl-image public-id="sample.jpg" > <cl-transformation width="250" height="250" gravity="north" crop="fill"> </cl-transformation> </cl-image>
.Net:cloudinary.Api.UrlImgUp.Transform(new Transformation().Width(250).Height(250).Gravity("north").Crop("fill")).BuildImageTag("sample.jpg")
Android:MediaManager.get().url().transformation(new Transformation().width(250).height(250).gravity("north").crop("fill")).generate("sample.jpg");
iOS:imageView.cldSetImage(cloudinary.createUrl().setTransformation(CLDTransformation().setWidth(250).setHeight(250).setGravity("north").setCrop("fill")).generate("sample.jpg")!, cloudinary: cloudinary)
- With gravity set to south_east: Ruby:
cl_image_tag("sample.jpg", :width=>250, :height=>250, :gravity=>"south_east", :crop=>"fill")
PHP:cl_image_tag("sample.jpg", array("width"=>250, "height"=>250, "gravity"=>"south_east", "crop"=>"fill"))
Python:CloudinaryImage("sample.jpg").image(width=250, height=250, gravity="south_east", crop="fill")
Node.js:cloudinary.image("sample.jpg", {width: 250, height: 250, gravity: "south_east", crop: "fill"})
Java:cloudinary.url().transformation(new Transformation().width(250).height(250).gravity("south_east").crop("fill")).imageTag("sample.jpg");
JS:cloudinary.imageTag('sample.jpg', {width: 250, height: 250, gravity: "south_east", crop: "fill"}).toHtml();
jQuery:$.cloudinary.image("sample.jpg", {width: 250, height: 250, gravity: "south_east", crop: "fill"})
React:<Image publicId="sample.jpg" > <Transformation width="250" height="250" gravity="south_east" crop="fill" /> </Image>
Angular:<cl-image public-id="sample.jpg" > <cl-transformation width="250" height="250" gravity="south_east" crop="fill"> </cl-transformation> </cl-image>
.Net:cloudinary.Api.UrlImgUp.Transform(new Transformation().Width(250).Height(250).Gravity("south_east").Crop("fill")).BuildImageTag("sample.jpg")
Android:MediaManager.get().url().transformation(new Transformation().width(250).height(250).gravity("south_east").crop("fill")).generate("sample.jpg");
iOS:imageView.cldSetImage(cloudinary.createUrl().setTransformation(CLDTransformation().setWidth(250).setHeight(250).setGravity("south_east").setCrop("fill")).generate("sample.jpg")!, cloudinary: cloudinary)
More advanced gravity parameters include:
xy_center- Set the center of gravity to the givenx&ycoordinates.face- Automatically detect the largest face in an image and make it the focus of the transformation. Any previously specified face coordinates (during upload, with the Admin API, or via the Management Console) override the automatically detected faces and are used instead. Defaults tonorthgravity if no face is detected or previously specified. You can also useface:autoorface:centerso that the gravity will default to auto orcenterif no face is detected or specified.faces- Same asfacegravity, but detects all the faces in an image and uses the rectangle containing all face coordinates as the basis of the transformation. Any previously specified face coordinates (during upload, with the Admin API, or via the Management Console) override the automatically detected faces and are used instead. Defaults tonorthgravity if no faces are detected or previously specified. You can also usefaces:autoorfaces:centerso that the gravity will default to auto orcenterif no faces are detected or specified.face:center- Same asfacegravity, but defaults tocentergravity if no face is detected.faces:center- Same asfacesgravity, but defaults tocentergravity if no face is detected.liquid- Enables content-aware liquid rescaling (also sometimes known as 'seam carving'), which can be useful when changing the aspect ratio of an image. Normal scaling retains all image content even when aspect ratios change, so important elements of an image can be distorted. Liquid rescaling intelligently removes or duplicates 'seams' of pixels that may zig zag horizontally or vertically through the picture. The seams are determined using an algorithm that selects pixels with the least importance (least color change on either side of the seam). The result is an image where the most 'important' elements of the image are retained and generally do not appear distorted although the relative height or width of items in an image may change, especially if you significantly change the aspect ratio. Tips and guideines:- This gravity can be used only in conjunction with
c_scale(the default crop method). - The
liquidgravity works best when applied to scenic images with large 'unbusy' sections such as sky, grass, or water. - It also works best when applied to larger images. Thus, it is recommended to use this gravity to change aspect ratio using relative widths and heights, where one of the two dimensions remains at or close to
1.0. If you also want to resize the image, apply the resize on a different component of a chained transformation. - In some cases, over-aggressive liquid rescaling can result in significant artifacts.
- Example:
w_1.0,ar_1.0,g_liquid/w_500,h_500uses liquid scaling to change an image to a square (aspect ratio of 1:1) based on the original image width, and then resizes the result to 500x500.
- This gravity can be used only in conjunction with
auto- An intelligent algorithm analyzes and prioritizes the most prominent elements of the image to focus on. For details, see Automatic croppingocr_text- Detect all text elements in an image using the OCR Text Detection and Extraction add-on and use the detected bounding box coordinates as the basis of the transformation.adv_face- Automatically detect the largest face in an image with the Advanced Facial Attribute Detection add-on and make it the focus of the transformation.adv_faces- Automatically detect all faces in an image with the Advanced Facial Attribute Detection add-on and make them the focus of the transformation.adv_eyes- Automatically detect all eyes in an image with the Advanced Facial Attribute Detection add-on and make them the focus of the transformation.custom- Use custom coordinates that were previously specified (e.g., as part of the image upload method) and make them the focus of the transformation. Defaults to 'center' gravity if no custom coordinates have been specified.custom:face- Same ascustomgravity, but defaults tofacegravity if no custom coordinates have been specified.custom:faces- Same ascustomgravity, but defaults tofacesgravity if no custom coordinates have been specified.custom:adv_face- Same ascustomgravity, but defaults toadv_facegravity if no custom coordinates have been specified.custom:adv_faces- Same ascustomgravity, but defaults toadv_facesgravity if no custom coordinates have been specified.
Automatic cropping
Cloudinary's intelligent cropping capabilities ensure that the most interesting areas of each image are included in the resulting derived image, not only for photos with faces, but for any content type. Each image is analyzed individually to find the optimal region to focus on while cropping, and automatically detected faces (or other elements) are given higher priority while analyzing the image content (although any custom coordinates defined will override the detection algorithm).
The Cloudinary content-aware cropping algorithm uses a combination of heuristics to automatically detect the region of interest in every image and then crop them on the fly. Automatic cropping is supported by setting the gravity transformation parameter to auto (g_auto in URLs):
g_auto1 - The default mode that gives higher priority to automatically detected faces (the same asg_auto:faces).g_auto:[focal_gravity]1 - (e.g.,g_auto:adv_face). Specific focal gravities can be specified in order to give higher priority to other auto detected regions rather than the default of giving priority to detected faces. Supported options for focal_gravity:adv_face,adv_faces,adv_eyes,body,face, andfaces(default).g_auto:no_faces1 - the algorithm will process the image without giving higher priority to any detected elements (e.g., auto detected faces).g_auto:custom_no_override- Don't override the algorithm with the custom coordinates but give higher priority to the custom coordinates when determining the region of interest.g_auto:none- Perform analysis of the image content without giving precedence to custom coordinates or higher priority to any detected element.g_auto:[level]1 - (Only relevant for the thumb cropping mode). The level of aggressiveness of the cropping algorithm between 0 and 100, where 100 tries to keep more of the original image, and 0 crops more aggressively and then zooms in to image. e.g.,g_auto:50,g_auto:adv_faces:0. The default is 100.
1 If custom coordinates have been specified for an image (using the Upload API or the Management Console), the cropping will be done according to them, taking the custom coordinates as-is and overriding the detection algorithm (the same as g_custom). This applies to all the g_auto options above except for g_auto:custom_no_override and g_auto:none.
Automatic cropping is supported for the fill, lfill, thumb and crop modes.
Automatic cropping with the fill mode
Keeping the most of the original image according to the requested dimensions of the derived image. Ensuring that as much as possible of the most interesting regions of the original image is included in the resulting image.
Example of portrait aspect ratio cropping, regular vs. automatic:
Original
w_200,h_300,c_fill,g_centerRegular fill
w_200,h_300,c_fill,g_autoAutomatic fill
cl_image_tag("basketball_in_net.jpg", :width=>200, :height=>300, :gravity=>"auto", :crop=>"fill")
cl_image_tag("basketball_in_net.jpg", array("width"=>200, "height"=>300, "gravity"=>"auto", "crop"=>"fill"))
CloudinaryImage("basketball_in_net.jpg").image(width=200, height=300, gravity="auto", crop="fill")
cloudinary.image("basketball_in_net.jpg", {width: 200, height: 300, gravity: "auto", crop: "fill"})
cloudinary.url().transformation(new Transformation().width(200).height(300).gravity("auto").crop("fill")).imageTag("basketball_in_net.jpg");
cloudinary.imageTag('basketball_in_net.jpg', {width: 200, height: 300, gravity: "auto", crop: "fill"}).toHtml();
$.cloudinary.image("basketball_in_net.jpg", {width: 200, height: 300, gravity: "auto", crop: "fill"})
<Image publicId="basketball_in_net.jpg" > <Transformation width="200" height="300" gravity="auto" crop="fill" /> </Image>
<cl-image public-id="basketball_in_net.jpg" > <cl-transformation width="200" height="300" gravity="auto" crop="fill"> </cl-transformation> </cl-image>
cloudinary.Api.UrlImgUp.Transform(new Transformation().Width(200).Height(300).Gravity("auto").Crop("fill")).BuildImageTag("basketball_in_net.jpg")
MediaManager.get().url().transformation(new Transformation().width(200).height(300).gravity("auto").crop("fill")).generate("basketball_in_net.jpg");
imageView.cldSetImage(cloudinary.createUrl().setTransformation(CLDTransformation().setWidth(200).setHeight(300).setGravity("auto").setCrop("fill")).generate("basketball_in_net.jpg")!, cloudinary: cloudinary)
Example of square aspect ratio cropping, regular vs. automatic:
Original
w_200,h_200,c_fill,g_centerRegular fill
w_200,h_200,c_fill,g_autoAutomatic fill
cl_image_tag("face_left.jpg", :width=>200, :height=>200, :gravity=>"auto", :crop=>"fill")
cl_image_tag("face_left.jpg", array("width"=>200, "height"=>200, "gravity"=>"auto", "crop"=>"fill"))
CloudinaryImage("face_left.jpg").image(width=200, height=200, gravity="auto", crop="fill")
cloudinary.image("face_left.jpg", {width: 200, height: 200, gravity: "auto", crop: "fill"})
cloudinary.url().transformation(new Transformation().width(200).height(200).gravity("auto").crop("fill")).imageTag("face_left.jpg");
cloudinary.imageTag('face_left.jpg', {width: 200, height: 200, gravity: "auto", crop: "fill"}).toHtml();
$.cloudinary.image("face_left.jpg", {width: 200, height: 200, gravity: "auto", crop: "fill"})
<Image publicId="face_left.jpg" > <Transformation width="200" height="200" gravity="auto" crop="fill" /> </Image>
<cl-image public-id="face_left.jpg" > <cl-transformation width="200" height="200" gravity="auto" crop="fill"> </cl-transformation> </cl-image>
cloudinary.Api.UrlImgUp.Transform(new Transformation().Width(200).Height(200).Gravity("auto").Crop("fill")).BuildImageTag("face_left.jpg")
MediaManager.get().url().transformation(new Transformation().width(200).height(200).gravity("auto").crop("fill")).generate("face_left.jpg");
imageView.cldSetImage(cloudinary.createUrl().setTransformation(CLDTransformation().setWidth(200).setHeight(200).setGravity("auto").setCrop("fill")).generate("face_left.jpg")!, cloudinary: cloudinary)
Automatic cropping with the lfill mode
Same as the fill mode, but only if the original image is larger than the given limit (width and height). This mode doesn't scale up the image if your requested dimensions are bigger than the original image's.
Automatic cropping with the thumb mode
Makes possible more aggressive cropping than the fill mode. This mode attempts to further zoom in and crop out less interesting image regions when relevant in order to include the most interesting objects in the resulting derived image. The automatic cropping algorithm decides whether and how aggressively to zoom-in and crop according to the content and cropping ratio of each image individually. A numerical value between 0 and 100 can be added to the g_auto parameter in order to advise the algorithm regarding the desired aggressiveness level (e.g., g_auto:0 for the most aggressive thumb cropping).
Example of a square thumbnail, regular vs. automatic cropping:
Original
c_thumb,g_center Regular thumbnail
c_thumb,g_auto Automatic thumbnail
c_thumb,g_auto:0 Automatic thumbnail - most aggressive
cl_image_tag("sunset_shoes.jpg", :width=>150, :height=>150, :gravity=>"auto:0", :crop=>"thumb")
cl_image_tag("sunset_shoes.jpg", array("width"=>150, "height"=>150, "gravity"=>"auto:0", "crop"=>"thumb"))
CloudinaryImage("sunset_shoes.jpg").image(width=150, height=150, gravity="auto:0", crop="thumb")
cloudinary.image("sunset_shoes.jpg", {width: 150, height: 150, gravity: "auto:0", crop: "thumb"})
cloudinary.url().transformation(new Transformation().width(150).height(150).gravity("auto:0").crop("thumb")).imageTag("sunset_shoes.jpg");
cloudinary.imageTag('sunset_shoes.jpg', {width: 150, height: 150, gravity: "auto:0", crop: "thumb"}).toHtml();
$.cloudinary.image("sunset_shoes.jpg", {width: 150, height: 150, gravity: "auto:0", crop: "thumb"})
<Image publicId="sunset_shoes.jpg" > <Transformation width="150" height="150" gravity="auto:0" crop="thumb" /> </Image>
<cl-image public-id="sunset_shoes.jpg" > <cl-transformation width="150" height="150" gravity="auto:0" crop="thumb"> </cl-transformation> </cl-image>
cloudinary.Api.UrlImgUp.Transform(new Transformation().Width(150).Height(150).Gravity("auto:0").Crop("thumb")).BuildImageTag("sunset_shoes.jpg")
MediaManager.get().url().transformation(new Transformation().width(150).height(150).gravity("auto:0").crop("thumb")).generate("sunset_shoes.jpg");
imageView.cldSetImage(cloudinary.createUrl().setTransformation(CLDTransformation().setWidth(150).setHeight(150).setGravity("auto:0").setCrop("thumb")).generate("sunset_shoes.jpg")!, cloudinary: cloudinary)
auto gravity together with thumb cropping indicates your preference for more or less agressive zooming and the algorithm takes that preference into account. However, the automatic gravity algorithm may still determine that for a particular image and aspect ratio, its default zoom selection is the appropriate zoom for this image. In such a case, you may not see a difference between the default g_auto and g_auto with a specific agressiveness level.Automatic cropping with the crop mode
Crop a region of exactly the given width and height out of the original image while automatically focusing on the most interesting region of the original image that fits within the required dimensions. The portion of the interesting area depends on the resolution of the original image. The crop mode is less useful than the fill, lfill, and thumb modes, as it is only practical to use when both the dimensions of the original image and the size of the interesting region are already known.
Example of a square crop, regular vs. auto cropping:
Original
c_crop,g_center Regular crop
c_crop,g_auto Automatic crop
cl_image_tag("fat_cat.jpg", :width=>200, :height=>200, :gravity=>"auto", :crop=>"crop")
cl_image_tag("fat_cat.jpg", array("width"=>200, "height"=>200, "gravity"=>"auto", "crop"=>"crop"))
CloudinaryImage("fat_cat.jpg").image(width=200, height=200, gravity="auto", crop="crop")
cloudinary.image("fat_cat.jpg", {width: 200, height: 200, gravity: "auto", crop: "crop"})
cloudinary.url().transformation(new Transformation().width(200).height(200).gravity("auto").crop("crop")).imageTag("fat_cat.jpg");
cloudinary.imageTag('fat_cat.jpg', {width: 200, height: 200, gravity: "auto", crop: "crop"}).toHtml();
$.cloudinary.image("fat_cat.jpg", {width: 200, height: 200, gravity: "auto", crop: "crop"})
<Image publicId="fat_cat.jpg" > <Transformation width="200" height="200" gravity="auto" crop="crop" /> </Image>
<cl-image public-id="fat_cat.jpg" > <cl-transformation width="200" height="200" gravity="auto" crop="crop"> </cl-transformation> </cl-image>
cloudinary.Api.UrlImgUp.Transform(new Transformation().Width(200).Height(200).Gravity("auto").Crop("crop")).BuildImageTag("fat_cat.jpg")
MediaManager.get().url().transformation(new Transformation().width(200).height(200).gravity("auto").crop("crop")).generate("fat_cat.jpg");
imageView.cldSetImage(cloudinary.createUrl().setTransformation(CLDTransformation().setWidth(200).setHeight(200).setGravity("auto").setCrop("crop")).generate("fat_cat.jpg")!, cloudinary: cloudinary)
Face detection based transformations
Cloudinary provides face detection algorithms for automatically applying transformations according to the detected faces within an image. This section consists of the following topics:
- Face detection based cropping
- Position overlays on detected faces
- Effects with face detection
- Advanced facial attributes detection
- Changing the default zoom level
Face detection based cropping
Cloudinary supports built-in face detection capabilities that allow you to intelligently crop your images. To automatically crop an image so that the detected face(s) is used as the center of the derived picture, set the gravity parameter to one of the following values:
face- the region of the image that includes the single largest face (g_facefor URLs).faces- the region of the image that includes all the faces detected (g_facesfor URLs).
For example, the image below of a nice woman with a Blue Morpho butterfly was uploaded to Cloudinary:
cl_image_tag("butterfly.jpg")cl_image_tag("butterfly.jpg")CloudinaryImage("butterfly.jpg").image()cloudinary.image("butterfly.jpg")cloudinary.url().imageTag("butterfly.jpg");cloudinary.imageTag('butterfly.jpg').toHtml();$.cloudinary.image("butterfly.jpg")
<Image publicId="butterfly.jpg" > </Image>
<cl-image public-id="butterfly.jpg" > </cl-image>
cloudinary.Api.UrlImgUp.BuildImageTag("butterfly.jpg")MediaManager.get().url().generate("butterfly.jpg");imageView.cldSetImage(cloudinary.createUrl().generate("butterfly.jpg")!, cloudinary: cloudinary)
To create a 200x200 version with the fill cropping mode to keep as much as possible of the original image, and using the default center gravity without face detection (for comparison):
cl_image_tag("butterfly.jpg", :width=>200, :height=>200, :crop=>"fill")
cl_image_tag("butterfly.jpg", array("width"=>200, "height"=>200, "crop"=>"fill"))
CloudinaryImage("butterfly.jpg").image(width=200, height=200, crop="fill")
cloudinary.image("butterfly.jpg", {width: 200, height: 200, crop: "fill"})
cloudinary.url().transformation(new Transformation().width(200).height(200).crop("fill")).imageTag("butterfly.jpg");
cloudinary.imageTag('butterfly.jpg', {width: 200, height: 200, crop: "fill"}).toHtml();
$.cloudinary.image("butterfly.jpg", {width: 200, height: 200, crop: "fill"})
<Image publicId="butterfly.jpg" > <Transformation width="200" height="200" crop="fill" /> </Image>
<cl-image public-id="butterfly.jpg" > <cl-transformation width="200" height="200" crop="fill"> </cl-transformation> </cl-image>
cloudinary.Api.UrlImgUp.Transform(new Transformation().Width(200).Height(200).Crop("fill")).BuildImageTag("butterfly.jpg")
MediaManager.get().url().transformation(new Transformation().width(200).height(200).crop("fill")).generate("butterfly.jpg");
imageView.cldSetImage(cloudinary.createUrl().setTransformation(CLDTransformation().setWidth(200).setHeight(200).setCrop("fill")).generate("butterfly.jpg")!, cloudinary: cloudinary)
Now adding the face gravity parameter to correctly fill the requested dimensions:
cl_image_tag("butterfly.jpg", :width=>200, :height=>200, :gravity=>"face", :crop=>"fill")
cl_image_tag("butterfly.jpg", array("width"=>200, "height"=>200, "gravity"=>"face", "crop"=>"fill"))
CloudinaryImage("butterfly.jpg").image(width=200, height=200, gravity="face", crop="fill")
cloudinary.image("butterfly.jpg", {width: 200, height: 200, gravity: "face", crop: "fill"})
cloudinary.url().transformation(new Transformation().width(200).height(200).gravity("face").crop("fill")).imageTag("butterfly.jpg");
cloudinary.imageTag('butterfly.jpg', {width: 200, height: 200, gravity: "face", crop: "fill"}).toHtml();
$.cloudinary.image("butterfly.jpg", {width: 200, height: 200, gravity: "face", crop: "fill"})
<Image publicId="butterfly.jpg" > <Transformation width="200" height="200" gravity="face" crop="fill" /> </Image>
<cl-image public-id="butterfly.jpg" > <cl-transformation width="200" height="200" gravity="face" crop="fill"> </cl-transformation> </cl-image>
cloudinary.Api.UrlImgUp.Transform(new Transformation().Width(200).Height(200).Gravity("face").Crop("fill")).BuildImageTag("butterfly.jpg")
MediaManager.get().url().transformation(new Transformation().width(200).height(200).gravity("face").crop("fill")).generate("butterfly.jpg");
imageView.cldSetImage(cloudinary.createUrl().setTransformation(CLDTransformation().setWidth(200).setHeight(200).setGravity("face").setCrop("fill")).generate("butterfly.jpg")!, cloudinary: cloudinary)
In order to create a 200x200 thumbnail focused on the face of the woman, simply select the thumb crop mode and face gravity:
cl_image_tag("butterfly.jpg", :width=>200, :height=>200, :gravity=>"face", :crop=>"thumb")
cl_image_tag("butterfly.jpg", array("width"=>200, "height"=>200, "gravity"=>"face", "crop"=>"thumb"))
CloudinaryImage("butterfly.jpg").image(width=200, height=200, gravity="face", crop="thumb")
cloudinary.image("butterfly.jpg", {width: 200, height: 200, gravity: "face", crop: "thumb"})
cloudinary.url().transformation(new Transformation().width(200).height(200).gravity("face").crop("thumb")).imageTag("butterfly.jpg");
cloudinary.imageTag('butterfly.jpg', {width: 200, height: 200, gravity: "face", crop: "thumb"}).toHtml();
$.cloudinary.image("butterfly.jpg", {width: 200, height: 200, gravity: "face", crop: "thumb"})
<Image publicId="butterfly.jpg" > <Transformation width="200" height="200" gravity="face" crop="thumb" /> </Image>
<cl-image public-id="butterfly.jpg" > <cl-transformation width="200" height="200" gravity="face" crop="thumb"> </cl-transformation> </cl-image>
cloudinary.Api.UrlImgUp.Transform(new Transformation().Width(200).Height(200).Gravity("face").Crop("thumb")).BuildImageTag("butterfly.jpg")
MediaManager.get().url().transformation(new Transformation().width(200).height(200).gravity("face").crop("thumb")).generate("butterfly.jpg");
imageView.cldSetImage(cloudinary.createUrl().setTransformation(CLDTransformation().setWidth(200).setHeight(200).setGravity("face").setCrop("thumb")).generate("butterfly.jpg")!, cloudinary: cloudinary)
You can also automatically crop to the region defined by face detection without resizing the original image. The following example uses the crop mode together with face gravity for cropping the original image to the face of the woman:
cl_image_tag("butterfly.jpg", :gravity=>"face", :crop=>"crop")
cl_image_tag("butterfly.jpg", array("gravity"=>"face", "crop"=>"crop"))
CloudinaryImage("butterfly.jpg").image(gravity="face", crop="crop")
cloudinary.image("butterfly.jpg", {gravity: "face", crop: "crop"})
cloudinary.url().transformation(new Transformation().gravity("face").crop("crop")).imageTag("butterfly.jpg");
cloudinary.imageTag('butterfly.jpg', {gravity: "face", crop: "crop"}).toHtml();
$.cloudinary.image("butterfly.jpg", {gravity: "face", crop: "crop"})
<Image publicId="butterfly.jpg" > <Transformation gravity="face" crop="crop" /> </Image>
<cl-image public-id="butterfly.jpg" > <cl-transformation gravity="face" crop="crop"> </cl-transformation> </cl-image>
cloudinary.Api.UrlImgUp.Transform(new Transformation().Gravity("face").Crop("crop")).BuildImageTag("butterfly.jpg")
MediaManager.get().url().transformation(new Transformation().gravity("face").crop("crop")).generate("butterfly.jpg");
imageView.cldSetImage(cloudinary.createUrl().setTransformation(CLDTransformation().setGravity("face").setCrop("crop")).generate("butterfly.jpg")!, cloudinary: cloudinary)
For examples with multiple faces, the following image, showing a nice couple, was uploaded to Cloudinary:
cl_image_tag("couple.jpg")cl_image_tag("couple.jpg")CloudinaryImage("couple.jpg").image()cloudinary.image("couple.jpg")cloudinary.url().imageTag("couple.jpg");cloudinary.imageTag('couple.jpg').toHtml();$.cloudinary.image("couple.jpg")
<Image publicId="couple.jpg" > </Image>
<cl-image public-id="couple.jpg" > </cl-image>
cloudinary.Api.UrlImgUp.BuildImageTag("couple.jpg")MediaManager.get().url().generate("couple.jpg");imageView.cldSetImage(cloudinary.createUrl().generate("couple.jpg")!, cloudinary: cloudinary)
You can specify the thumb crop mode and face gravity to create a 150x150 thumbnail centered on the face of only the biggest face in the image:
cl_image_tag("couple.jpg", :width=>150, :height=>150, :gravity=>"face", :crop=>"thumb")
cl_image_tag("couple.jpg", array("width"=>150, "height"=>150, "gravity"=>"face", "crop"=>"thumb"))
CloudinaryImage("couple.jpg").image(width=150, height=150, gravity="face", crop="thumb")
cloudinary.image("couple.jpg", {width: 150, height: 150, gravity: "face", crop: "thumb"})
cloudinary.url().transformation(new Transformation().width(150).height(150).gravity("face").crop("thumb")).imageTag("couple.jpg");
cloudinary.imageTag('couple.jpg', {width: 150, height: 150, gravity: "face", crop: "thumb"}).toHtml();
$.cloudinary.image("couple.jpg", {width: 150, height: 150, gravity: "face", crop: "thumb"})
<Image publicId="couple.jpg" > <Transformation width="150" height="150" gravity="face" crop="thumb" /> </Image>
<cl-image public-id="couple.jpg" > <cl-transformation width="150" height="150" gravity="face" crop="thumb"> </cl-transformation> </cl-image>
cloudinary.Api.UrlImgUp.Transform(new Transformation().Width(150).Height(150).Gravity("face").Crop("thumb")).BuildImageTag("couple.jpg")
MediaManager.get().url().transformation(new Transformation().width(150).height(150).gravity("face").crop("thumb")).generate("couple.jpg");
imageView.cldSetImage(cloudinary.createUrl().setTransformation(CLDTransformation().setWidth(150).setHeight(150).setGravity("face").setCrop("thumb")).generate("couple.jpg")!, cloudinary: cloudinary)
In order to create a thumbnail focusing on the faces of both of them, simply specify faces as the gravity:
cl_image_tag("couple.jpg", :width=>115, :height=>135, :gravity=>"faces", :crop=>"thumb")
cl_image_tag("couple.jpg", array("width"=>115, "height"=>135, "gravity"=>"faces", "crop"=>"thumb"))
CloudinaryImage("couple.jpg").image(width=115, height=135, gravity="faces", crop="thumb")
cloudinary.image("couple.jpg", {width: 115, height: 135, gravity: "faces", crop: "thumb"})
cloudinary.url().transformation(new Transformation().width(115).height(135).gravity("faces").crop("thumb")).imageTag("couple.jpg");
cloudinary.imageTag('couple.jpg', {width: 115, height: 135, gravity: "faces", crop: "thumb"}).toHtml();
$.cloudinary.image("couple.jpg", {width: 115, height: 135, gravity: "faces", crop: "thumb"})
<Image publicId="couple.jpg" > <Transformation width="115" height="135" gravity="faces" crop="thumb" /> </Image>
<cl-image public-id="couple.jpg" > <cl-transformation width="115" height="135" gravity="faces" crop="thumb"> </cl-transformation> </cl-image>
cloudinary.Api.UrlImgUp.Transform(new Transformation().Width(115).Height(135).Gravity("faces").Crop("thumb")).BuildImageTag("couple.jpg")
MediaManager.get().url().transformation(new Transformation().width(115).height(135).gravity("faces").crop("thumb")).generate("couple.jpg");
imageView.cldSetImage(cloudinary.createUrl().setTransformation(CLDTransformation().setWidth(115).setHeight(135).setGravity("faces").setCrop("thumb")).generate("couple.jpg")!, cloudinary: cloudinary)
You can also use the fill cropping mode together with faces gravity to correctly fill an image with your desired dimensions:
cl_image_tag("couple.jpg", :width=>100, :height=>150, :gravity=>"faces", :crop=>"fill")
cl_image_tag("couple.jpg", array("width"=>100, "height"=>150, "gravity"=>"faces", "crop"=>"fill"))
CloudinaryImage("couple.jpg").image(width=100, height=150, gravity="faces", crop="fill")
cloudinary.image("couple.jpg", {width: 100, height: 150, gravity: "faces", crop: "fill"})
cloudinary.url().transformation(new Transformation().width(100).height(150).gravity("faces").crop("fill")).imageTag("couple.jpg");
cloudinary.imageTag('couple.jpg', {width: 100, height: 150, gravity: "faces", crop: "fill"}).toHtml();
$.cloudinary.image("couple.jpg", {width: 100, height: 150, gravity: "faces", crop: "fill"})
<Image publicId="couple.jpg" > <Transformation width="100" height="150" gravity="faces" crop="fill" /> </Image>
<cl-image public-id="couple.jpg" > <cl-transformation width="100" height="150" gravity="faces" crop="fill"> </cl-transformation> </cl-image>
cloudinary.Api.UrlImgUp.Transform(new Transformation().Width(100).Height(150).Gravity("faces").Crop("fill")).BuildImageTag("couple.jpg")
MediaManager.get().url().transformation(new Transformation().width(100).height(150).gravity("faces").crop("fill")).generate("couple.jpg");
imageView.cldSetImage(cloudinary.createUrl().setTransformation(CLDTransformation().setWidth(100).setHeight(150).setGravity("faces").setCrop("fill")).generate("couple.jpg")!, cloudinary: cloudinary)
Position overlays on detected faces
To automatically position an overlay over the detected face(s) in an image, set the gravity parameter to one of the following values:
face- places an overlay over the single largest face in the image (g_facefor URLs).faces- places an overlay over each of the faces in the image (g_facesfor URLs).
For example, adding an overlay of the golden_star image over both of the faces detected in the young_couples image, where each star is resized to the same width as the detected face with the region_relative flag:
cl_image_tag("young_couple.jpg", :overlay=>"golden_star", :gravity=>"faces", :width=>1.0, :flags=>"region_relative")
cl_image_tag("young_couple.jpg", array("overlay"=>"golden_star", "gravity"=>"faces", "width"=>1.0, "flags"=>"region_relative"))
CloudinaryImage("young_couple.jpg").image(overlay="golden_star", gravity="faces", width=1.0, flags="region_relative")
cloudinary.image("young_couple.jpg", {overlay: "golden_star", gravity: "faces", width: "1.0", flags: "region_relative"})
cloudinary.url().transformation(new Transformation().overlay("golden_star").gravity("faces").width(1.0).flags("region_relative")).imageTag("young_couple.jpg");
cloudinary.imageTag('young_couple.jpg', {overlay: "golden_star", gravity: "faces", width: "1.0", flags: "region_relative"}).toHtml();
$.cloudinary.image("young_couple.jpg", {overlay: "golden_star", gravity: "faces", width: "1.0", flags: "region_relative"})
<Image publicId="young_couple.jpg" > <Transformation overlay="golden_star" gravity="faces" width="1.0" flags="region_relative" /> </Image>
<cl-image public-id="young_couple.jpg" > <cl-transformation overlay="golden_star" gravity="faces" width="1.0" flags="region_relative"> </cl-transformation> </cl-image>
cloudinary.Api.UrlImgUp.Transform(new Transformation().Overlay("golden_star").Gravity("faces").Width(1.0).Flags("region_relative")).BuildImageTag("young_couple.jpg")
MediaManager.get().url().transformation(new Transformation().overlay("golden_star").gravity("faces").width(1.0).flags("region_relative")).generate("young_couple.jpg");
imageView.cldSetImage(cloudinary.createUrl().setTransformation(CLDTransformation().setOverlay("golden_star").setGravity("faces").setWidth(1.0).setFlags("region_relative")).generate("young_couple.jpg")!, cloudinary: cloudinary)
Effects with face detection
To apply a blur or pixelation effect to the automatically detected faces in an image, use the effect parameter and set it to one of the following values:
blur_faces- Automatically blur all detected faces in the image: the strength of the blur effect is determined by an optional extra value (Range: 1 to 2000, Default: 500). For example,e_blur_faces:100uses a mild blur effect with a strength of 100.pixelate_faces- Automatically pixelate all detected faces in the image. The width of the pixelation squares is determined by an optional extra value (Range: 1 to 200, Default: 5). For example,e_pixelate_faces:3uses pixelation squares 3 pixels wide.
For example, to automatically pixelate both of the faces detected in the young_couples image with pixelation squares 9 pixels wide:
cl_image_tag("young_couple.jpg", :effect=>"pixelate_faces:9")
cl_image_tag("young_couple.jpg", array("effect"=>"pixelate_faces:9"))
CloudinaryImage("young_couple.jpg").image(effect="pixelate_faces:9")
cloudinary.image("young_couple.jpg", {effect: "pixelate_faces:9"})
cloudinary.url().transformation(new Transformation().effect("pixelate_faces:9")).imageTag("young_couple.jpg");
cloudinary.imageTag('young_couple.jpg', {effect: "pixelate_faces:9"}).toHtml();
$.cloudinary.image("young_couple.jpg", {effect: "pixelate_faces:9"})
<Image publicId="young_couple.jpg" > <Transformation effect="pixelate_faces:9" /> </Image>
<cl-image public-id="young_couple.jpg" > <cl-transformation effect="pixelate_faces:9"> </cl-transformation> </cl-image>
cloudinary.Api.UrlImgUp.Transform(new Transformation().Effect("pixelate_faces:9")).BuildImageTag("young_couple.jpg")
MediaManager.get().url().transformation(new Transformation().effect("pixelate_faces:9")).generate("young_couple.jpg");
imageView.cldSetImage(cloudinary.createUrl().setTransformation(CLDTransformation().setEffect("pixelate_faces:9")).generate("young_couple.jpg")!, cloudinary: cloudinary)
Advanced facial attributes detection
With the Advanced Facial Attributes Detection add-on, you can extend the Cloudinary built-in features that involve semantic photo data extraction, image cropping and the positioning of image overlays. When using the add-on, your images are further processed and additional advanced face attributes are automatically extracted. Cloudinary can then use these additional details to smartly crop, position, rotate and overlay images according to the position of the detected faces or eyes.
The advanced facial detection is applied by setting the gravity parameter to one of the following values:
adv_face- detects the single largest face in the image (g_adv_facefor URLs).adv_faces- detects all of the faces in the image (g_adv_facesfor URLs).adv_eyes- detects all the pairs of eyes in the image (g_adv_eyesfor URLs).
For example, to automatically overlay the image glasses over the detected eyes in the couples image. The glasses are resized to 170% the width of the detected eyes by adding the region_relative flag:
cl_image_tag("coupled.jpg", :flags=>"region_relative", :gravity=>"adv_eyes", :overlay=>"glasses", :width=>1.7)
cl_image_tag("coupled.jpg", array("flags"=>"region_relative", "gravity"=>"adv_eyes", "overlay"=>"glasses", "width"=>1.7))
CloudinaryImage("coupled.jpg").image(flags="region_relative", gravity="adv_eyes", overlay="glasses", width=1.7)
cloudinary.image("coupled.jpg", {flags: "region_relative", gravity: "adv_eyes", overlay: "glasses", width: "1.7"})
cloudinary.url().transformation(new Transformation().flags("region_relative").gravity("adv_eyes").overlay("glasses").width(1.7)).imageTag("coupled.jpg");
cloudinary.imageTag('coupled.jpg', {flags: "region_relative", gravity: "adv_eyes", overlay: "glasses", width: "1.7"}).toHtml();
$.cloudinary.image("coupled.jpg", {flags: "region_relative", gravity: "adv_eyes", overlay: "glasses", width: "1.7"})
<Image publicId="coupled.jpg" > <Transformation flags="region_relative" gravity="adv_eyes" overlay="glasses" width="1.7" /> </Image>
<cl-image public-id="coupled.jpg" > <cl-transformation flags="region_relative" gravity="adv_eyes" overlay="glasses" width="1.7"> </cl-transformation> </cl-image>
cloudinary.Api.UrlImgUp.Transform(new Transformation().Flags("region_relative").Gravity("adv_eyes").Overlay("glasses").Width(1.7)).BuildImageTag("coupled.jpg")
MediaManager.get().url().transformation(new Transformation().flags("region_relative").gravity("adv_eyes").overlay("glasses").width(1.7)).generate("coupled.jpg");
imageView.cldSetImage(cloudinary.createUrl().setTransformation(CLDTransformation().setFlags("region_relative").setGravity("adv_eyes").setOverlay("glasses").setWidth(1.7)).generate("coupled.jpg")!, cloudinary: cloudinary)
See the Advanced Facial Attributes Detection documentation for more information and examples on using the add-on.
Zoom level
When using either the crop or thumb cropping modes and setting the gravity parameter to one of the face detection values, the resulting image is delivered at a default zoom level. To control how much of the original image surrounding the face to keep, use the zoom parameter (z for URLs). This parameter accepts a decimal value that sets the new zoom level as a multiplier of the default zoom setting: a value less than 1.0 zooms out and a value greater than 1.0 zooms in. For example, z_0.5 halves the default zoom to 50% and zooms out to include more of the background around the face, while z_2.0 doubles the default zoom to 200% and zooms in to include less of the background around the face.
Examples with the uploaded image called woman:
- Original image (scaled down): Ruby:
cl_image_tag("woman.jpg")PHP:cl_image_tag("woman.jpg")Python:CloudinaryImage("woman.jpg").image()Node.js:cloudinary.image("woman.jpg")Java:cloudinary.url().imageTag("woman.jpg");JS:cloudinary.imageTag('woman.jpg').toHtml();jQuery:$.cloudinary.image("woman.jpg")
React:<Image publicId="woman.jpg" > </Image>
Angular:<cl-image public-id="woman.jpg" > </cl-image>
.Net:cloudinary.Api.UrlImgUp.BuildImageTag("woman.jpg")Android:MediaManager.get().url().generate("woman.jpg");iOS:imageView.cldSetImage(cloudinary.createUrl().generate("woman.jpg")!, cloudinary: cloudinary)
- Cropped with face detection and default zoom: Ruby:
cl_image_tag("woman.jpg", :gravity=>"face", :crop=>"crop")
PHP:cl_image_tag("woman.jpg", array("gravity"=>"face", "crop"=>"crop"))
Python:CloudinaryImage("woman.jpg").image(gravity="face", crop="crop")
Node.js:cloudinary.image("woman.jpg", {gravity: "face", crop: "crop"})
Java:cloudinary.url().transformation(new Transformation().gravity("face").crop("crop")).imageTag("woman.jpg");
JS:cloudinary.imageTag('woman.jpg', {gravity: "face", crop: "crop"}).toHtml();
jQuery:$.cloudinary.image("woman.jpg", {gravity: "face", crop: "crop"})
React:<Image publicId="woman.jpg" > <Transformation gravity="face" crop="crop" /> </Image>
Angular:<cl-image public-id="woman.jpg" > <cl-transformation gravity="face" crop="crop"> </cl-transformation> </cl-image>
.Net:cloudinary.Api.UrlImgUp.Transform(new Transformation().Gravity("face").Crop("crop")).BuildImageTag("woman.jpg")
Android:MediaManager.get().url().transformation(new Transformation().gravity("face").crop("crop")).generate("woman.jpg");
iOS:imageView.cldSetImage(cloudinary.createUrl().setTransformation(CLDTransformation().setGravity("face").setCrop("crop")).generate("woman.jpg")!, cloudinary: cloudinary)
- Cropped with face detection and zoom set to 130%: Ruby:
cl_image_tag("woman.jpg", :gravity=>"face", :zoom=>1.3, :crop=>"crop")
PHP:cl_image_tag("woman.jpg", array("gravity"=>"face", "zoom"=>1.3, "crop"=>"crop"))
Python:CloudinaryImage("woman.jpg").image(gravity="face", zoom=1.3, crop="crop")
Node.js:cloudinary.image("woman.jpg", {gravity: "face", zoom: "1.3
