Contrast¶
Usage: contrast(amount)
Description¶
This filter increases or decreases the image contrast.
Arguments¶
amount
- \(-100\) to \(100\) - The amount (in %) to change the image contrast. Positive numbers increase contrast and negative numbers decrease contrast.
Example¶
http://localhost:8888/unsafe/filters:contrast(40)/https%3A%2F%2Fgithub.com%2Fthumbor%2Fthumbor%2Fraw%2Fmaster%2Fexample.jpg
http://localhost:8888/unsafe/filters:contrast(-40)/https%3A%2F%2Fgithub.com%2Fthumbor%2Fthumbor%2Fraw%2Fmaster%2Fexample.jpg