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I'm looking for a formula or something with which i can increase the contrast +50% of the image and can save it.

I have tried Caman.js and its letting me increase contrast by numerical values and I can't figure out what level is 50%

average guy
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    Does this answer your question? [HTML5 Canvas image contrast](https://stackoverflow.com/questions/10521978/html5-canvas-image-contrast) – Aaron Feb 26 '21 at 07:18

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