Adjust image contrast
This tool remaps pixel values around the midpoint to apply the selected contrast level. The complete operation runs in temporary browser memory, so the input is never uploaded or stored by LocalKit.
The input stays available if you need to adjust a setting.
How to use adjust image contrast
- 1
Add the source values or files shown in the workbench.
- 2
Choose the settings for adjust image contrast.
- 3
Run the tool, inspect the local result, then copy or download it.
A realistic example
Increase a flat screenshot to 130% contrast so interface edges read more clearly. The source and generated result remain in this browser tab throughout the operation.
Supported formats and limits
Input: JPG, PNG, WebP. Output: PNG.
- High contrast can clip detail near pure black and pure white.
- Available memory and browser limits still apply to very large inputs.
Questions people ask
What does adjust image contrast change?
This tool remaps pixel values around the midpoint to apply the selected contrast level.
Is any input sent to a server?
No. LocalKit performs this operation in your current browser tab.