Media delivery

Cloudinary leverages multiple CDNs, including Akamai, the leading CDN provider, with thousands of global delivery servers. Together with Cloudinary's advanced caching techniques and dynamic URL-based image delivery, your resources are efficiently delivered to your users all around the world.

Guide Description
Image optimization Deliver your resources with the smallest possible file size while maintaining visual quality, saving bandwidth and improving performance for your website. Cloudinary automatically implements various image optimizations and offers many other features for optimizing the resources you deliver to your users.
Responsive images Upload a single high resolution image and let Cloudinary automatically transform it to perfectly fit any HiDPI device and Retina display, at any pixel density (DPR). Cloudinary supports responsive images using smart, on-the-fly resizing and cropping based on your visitor specific web layout, and also provides various solutions for automatically implementing responsive images on your website.
Fetch remote images Automatically fetch an image from anywhere on the Web, with on-the-fly manipulation and optimized delivery via a CDN.
Facebook profile pictures If you use Facebook Connect for authenticating users to your site or you integrate with Facebook profiles in your Web application, you may need to display Facebook profile pictures in your site.
Twitter profile pictures Whether you use Twitter for signing in users to your site or you simply integrate with Twitter profiles in your Web application, you probably need to display Twitter profile pictures in your site.
Sprite generation Sprites, a single image containing many smaller images, are great for reducing network overhead and bypassing download limitations: the browser downloads only a single sprite and CSS code directs the browser to which part of the sprite to use for each contained image. Cloudinary can generate sprites for you based on all images with a specified tag.