1. Home
2. Reference documentation
3. Image Optimizer

contrast

The contrast parameter increases or decreases the difference between the darkest and lightest tones in an image.

Syntax

contrast={value}

value may be any number between -100 and 100.

Notes

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

Examples

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