Cloudinary Blog

Delivering all your websites’ images through a CDN

Delivering all your website images through a CDN
Most leading blogs deliver their assets (images, JS, CSS, etc.) through state-of-the-art CDNs and utilize online resizing technologies. With faster, off-site access, they greatly improve their users’ browsing experience, while reducing load on their servers.
 
Using Cloudinary you can use these same technologies today, in your website or blog, without any hassle. Simply direct all your images to Cloudinary and they would be delivered to your visitors through Amazon’s powerful CDN network. You can even add alternative dimensions to your images’ URL and get your pictures in any desired size or perspective. All of this with minimum changes on your side.
 
UPDATE - March 2013: All Cloudinary images are delivered via the leading worldwide CDN of Akamai.

UPDATE - November 2016: Customers of the higher Cloudinary plans can choose between Akamai, CloudFront, or Fastly, or even take advantage of smart CDN selection or dynamic multi-CDN switching. For more details, see the multi-CDN blog post.
 
How it’s done? Simply prefix all your images with:
 
https://res.cloudinary.com/<your cloudinary cloud name>/image/fetch/

 
Here's a quick example:
Jennifer Lawrence

Both URLs return the exact same image, only the second one is cached and delivered through fast, localized CDNs and not via your local web server. Better experience to your users. Lower load on your server. Lower hosting costs.
 
Note: that 'demo' in all the URLs should be replaced with your Cloudinary’s cloud name. Click here to set up one in seconds.
 
You can use this method to create different sized thumbnails for the same photo. For example, creating a 150x150 crop focused on Jennifer’s face ('g_face') and with rounded corners of 20 pixels ('r_20') generates the following beautiful image:
 

150x150 Jennifer Lawrence
 
Nice, isn’t it :) see our docs of image transformations for plenty more options.
 
If you are a developer, you can do the same from code. For example, in Ruby on Rails:
 
cl_image_tag("http://upload.wikimedia.org/wikipedia/commons/4/46/" +
                       "Jennifer_Lawrence_at_the_83rd_Academy_Awards.jpg",
                       :type => :fetch, :width => 150, :height => 150,
                       :crop => :thumb, :gravity => :face, :radius => 20)
 
Note that if the image behind the original URL changes, Cloudinary will automatically update the images embedded in your site and all its resized versions.
 
To summarize, any blogger and any website owner can now deliver its website’s images through a CDN and seamlessly create smartly resized and cropped images in any dimension. All that by just adding the Cloudinary resource URL as a prefix to all images.

Recent Blog Posts

With automatic video subtitles, silence speaks volumes

The last time you scrolled through the feed on your favorite social site, chances are that some videos caught your attention, and chances are, they were playing silently.

On the other hand, what was your reaction the last time you opened a web page and a video unexpectedly began playing with sound? If you are anything like me, the first thing you did was to quickly hunt for the fastest way to pause the video, mute the sound, or close the page entirely, especially if you were in a public place at the time.

Read more
Impressed by WhatsApp Tech? Build WhatsApp Clone with Media Upload

With more than one billion people using WhatsApp, the platform is becoming a go-to for reliable and secure instant messaging. Having so many users means that data transfer processes must be optimized and scalable across all platforms. WhatsApp is touted for its ability to achieve significant media quality preservation when traversing the network from sender to receiver, and this is no easy feat to achieve.

Read more
New Google-powered add-on for auto video categories and tags

Due to significant growth of the web and improvements in network bandwidth, video is now a major source of information and entertainment shared over the internet. As a developer or asset manager, making corporate videos available for viewing, not to mention user-uploaded videos, means you also need a way to categorize them according to their content and make your video library searchable. Most systems end up organizing their video by metadata like the filename, or with user-generated tags (e.g., youtube). This sort of indexing method is subjective, inconsistent, time-consuming, incomplete and superficial.

Read more

iOS Developer Camp: The Dog House

By Shantini Vyas
iOS Developer Camp: The Dog House

Confession: I’m kind of addicted to hackathons. Ever since graduating from Coding Dojo earlier this year, I’ve been on the hunt for new places to expand my skills and meet new people in the tech space. iOS Developer Camp’s 10th Anniversary event bowled me over. Initially, because of its length. 48 hours? Yeesh. I had no idea that those 48 hours would change my life. But let’s first get a little backstory on my favorite topic: dogs.

Read more
GDPR: Cloudinary's take on the What, When, Why, and How

GDPR is a new regulation that deals with the way individuals' private information is handled. This regulation is going to have a deep effect on the entire internet industry. The fact that GDPR is a European regulation doesn't mean it's relevant only for European organizations. It requires protecting the data of any individual whose data is processed or stored in any way within European boundaries. As the reach of many companies is global, the requirement is actually relevant to a lot of companies worldwide.

Read more