Cloudinary Blog

Adding borders to images

Graphic designers often contemplate whether to add borders to their website elements. The decision of whether to add borders around frames, buttons and text elements really depends on the feeling the designer is trying to convey through the design. 
In this blog post we wanted to tell you about a new cloud-based transformation available through Cloudinary - adding borders to images. Yes, you can use CSS3 or image masks to simulate borders around images, but the first is supported only on modern browsers and the latter clutters the HTML. In addition, if you plan on embedding images in emails or documents you can pretty much say goodbye to borders (certainly for images with rounded corners). For such cases, you can use Cloudinary's extremely simple image transformation API to add borders directly to the original image.
Consider the following photo. It was uploaded to Cloudinary using 'autumn_leaves' as its public ID:
Adding a border around the image is straightforward. Simply specify the 'border' parameter ('bo' for URLs) using a CSS-like format. In the following example '4px_solid_black' means a 4 pixels wide black border.
Same example in Ruby on Rails:
<% cl_image_tag("autumn_leaves.jpg", :width => 0.15, :crop => :scale, 
                :border => { :width => 4, :color => 'black' }) %>
The border's color component also accepts RGB format. The following example rounds the corners of the image using the 'radius' parameter ('r' for URLs) and adds a 6 pixels solid green border ('#00390b').
Same example in PHP:
<?php echo cl_image_tag("autumn_leaves.jpg", array("width" => 0.15, "crop" => "scale", 
       "radius" => 20, "border" => array("width" => 6, "color" => "#00390b"))) ?>
Cloudinary also supports adding semi-transparent borders. This is accomplished using the RGBA color format. The Alpha hex value ranges between 00 (fully transparent), to FF (opaque). The following example generates a semi transparent 10 pixels wide green border. We also use Cloudinary's chained transformations to make the image elliptic ('max' radius), rotate the image by 5 degrees and add an underlay blue background image (while resizing it and increasing its brightness).
Same example in Django:
import cloudinary
img = cloudinary.CloudinaryImage("autumn_leaves.jpg")
          dict(width=0.15, crop='scale', radius='max', 
               border=dict(width=10, color='#00390b60')), 
          dict(underlay='site_bg', width=250, height=200, effects='brightness:50')])
And one last example - the following URL generates an image based on a Facebook profile picture that was automatically fetched by Cloudinary. The image is resized and rounded, and a black border is added. We then use an overlay to add Cloudinary's logo with a semi-transparent wide border. As with all of the Cloudinary managed images, the resulting image is persistently stored in the Cloud and then delivered and cached through a fast CDN.
By the way, you can also add the border as an incoming transformation so the original image is stored in the cloud already with the border. Here's such an incoming transformation, this time in Node.js:
cloudinary.image("itail.jpg", { type: 'facebook', transformation: [
                 { crop: 'fill', width: 150, height: 180, radius: 10, 
                   border: { width: 2, color: 'black'}},
                 { overlay: 'cloudinary_logo_white', width: 90, 
                   gravity: 'south_east', radius: 5, y: 7, x: 7, 
                   border: { width: 6, color: '#afcee990'}}]})


If you are a regular reader of our blog, you know that Cloudinary keeps enhancing on various fronts. One of these fronts is our ever increasing set of image manipulation capabilities. In this blog we introduced a cool new enhancement that you might find useful. We have more in our pipeline. If you want to see a new image manipulation capability added to Cloudinary, just drop us a line.

Recent Blog Posts

Video Management Made Easy

By Christian Nwamba
Video Management Made Easy with Cloudinary

Like it or not, visuals tell better stories than words. But using images and videos on a website presents challenges. This article is a follow-up to Website Image Performance Improvement, in which we discussed how to upload, store, manipulate, optimize and deliver images, efficiently and effectively. Now, let's talk video.

Read more

Instagram-like Filters with Cloudinary

By David Walsh
Instagram-like Filters with Cloudinary

This is a reposting of an article written by David Walsh. Check out his blog HERE!
Apps like Instagram are a testament to how brilliant a few color modifications can make a photo. We've seen hundreds of Instagram clones pop up, and even the CSS and Canvas specs have a

Read more
Easy upload and display images in your app with iOS SDK

Embedding and managing images and other media content in a mobile application is always challenging. The processes of downloading a media file from the web, storing it on the device, and then displaying it to the user are surprisingly and often frustratingly complex from a coding perspective. In addition, you probably want to add code that enables reusing images rather than downloading it every time, but you have to be smart about it to avoid clogging the precious storage space on your customer's device. Furthermore, your design probably requires that images be displayed in different sizes and DPRs in different devices, but creating and maintaining multiple versions of every image manually is virtually impossible.

Read more
Delivering an optimal smooth viewing experience

This article was originally posted on

In the early days of the web, the only thing that mattered was getting that content out to users no matter how long it took or what resources it consumed. As a matter of fact, users seemed to understand and were ready to wait till whenever there browser's loading spinner stops and the contents displayed.

Read more