The brightness parameter increases or decreases the amount of perceived light an image radiates or reflects.



value may be any number between -100 and 100.


  1. The default value is 0. This leaves the image unchanged.
  2. A value of 100 will result in a fully white image.
  3. A value of -100 will result in a fully black image.


Click the links to view the transformed image using a demo Fastly IO service.

Example usageDescription
?brightness=50Increase brightness by 50

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