Basic Concepts

When you use FSI Server with our auto-generated responsive image technology, you only need to provide one high-resolution source image for every image used on a website. FSI Server dynamically generates images in different formats, sizes and qualities on the fly. Real-time image rendering results in fewer files, optimised responsive resolutions, faster load times and higher page rankings.

This is achieved through the URL structure used by FSI Server. The main server URL for image, metadata and list requests is always in the form //yourdomain/fsi/server? followed by the desired parameters. If the application is deployed under a name other than "fsi", the above URL must be adapted accordingly.

All images placed in a storage connector (images in these connectors are imported to storage for high performance responsive imaging, see the FSI Server documentation for more info) will be served like this:

//yourdomain.com/fsi/server?type=image&source=images/samples/sample.jpg.

This ensures that auto-generated responsive imaging can be used.

The mandatory &type= parameter defines the type of response expected. Depending on the format or renderer used an image request will return a WEBP, JPEG, PNG or GIF. (see the image section for more information) Info and list requests provide access to image and directory metadata. (see the info section for more information)