URL referencies

It's for serving images (with or without real time transformations) stored on Shardimage.com or in an external source e.g. Facebook.com.

This is where you need to reference to the base image that you need to transform and service.

Optional ending can be provided to the URL that is mainly useful for, e.g.: SEO purposes, but contains the download filename as well in the browser.

Serves to protect the URL, so third parties cannot modify its content. This has significance in the expenses of CU and other service specific aspects (e.g.: full size images are behind a paywall, etc.)

The option part allows you to affect and control the operation of the URL and its other aspects

This serves to put a version number on the source.

The system provides a text-based, easily understandable feedback on all errors. The error is containted under the `X-Error` header. If there is an error, an 1x1 pixel size transparent gif will be displayed.

When transforming an image, you need to consider the length of the result URL.

There is the option to provide a reserve public ID, therefore avoiding the error 404 response for the URL.