Filerobot's image manipulation and transformation features rely on Cloudimage, the European leader in Cloud image optimization and delivery. Cloudimage will continue to run as a standalone service and all its features are integrated into Filerobot.

Should you not need storage and Digital Asset Management features but are just looking for an image transformation and CDN service, use Cloudimage.

We have documented the most common resizing functions here. Cloudimage supports many more, but we want to focus on what is really necessary for you to get started. If you have any request for undocumented features, contact us and we will help you out!

The basics

Everything starts with the basic URL format of a Filerobot URL


token Your Cloudimage customer token. Subscribe for a free trial to get one. You can also ask us for a custom token.
original_image_url Here you can use the full path to the image in your Filerobot storage, e.g. folder/file.jpg.
operations Image manipulation operations like width, height, crop, fit, rotate, trim. For a full list, see image resizing.
filters Use filters like contrast, pixellate, blur, greyscale and sharpen to apply different effects on your image. All filters can be found in the filter section.
original_image_url That's an easy one :)

Cloudimage's resizing servers, located in three data centres worldwide (Canada, France, and Singapore) will download your original image from origin_image_url, transform it based on the operation and filter parameters, and finally, display it on your website or mobile app through a rocket fast CDN.

An example with an original image hosted on your web server, Amazon S3 bucket, or any other storage accessible over HTTP.

If you host your images on a Web Server, Image Repository, or Storage Bucket sitting behind a Firewall, make sure your images are accessible over HTTP or HTTPS. Otherwise, Cloudimage servers will not be able to download the originals.


Please refer to the full list of options here: resizing operations, image filters, watermarking.

All these images are delivered by default over the 200 Points of Presence (PoPs) of our CDN and will load rocket fast worldwide. The purpose of this documentation is to explain all available parameters.