The contrast feature allows you to adjust the contrast of an image. This topic introduces the parameters and provides examples of the contrast feature.

Supported parameters

Parameter	Description	Value	Required
value	Image contrast.	[-100,100] Values < 0: Decreases image contrast. Value = 0: No adjustment to image contrast. Values > 0: Increases image contrast.	Yes

Examples

Set the width of the image to 200 and the contrast to -50.

https://tos-tools.tos-cn-beijing.volces.com/misc/sample.png?x-tos-process=image/resize,w_200/contrast,-50

Set the width of the image to 200 and the contrast to 50.

https://tos-tools.tos-cn-beijing.volces.com/misc/sample.png?x-tos-process=image/resize,w_200/contrast,50

Last updated: 2026.02.03 17:51:49

Public security network record in Beijing: No. 11010802032137