Image Contrast
Adjust contrast.
Image Contrast is its own job in the catalog (edit): Adjust contrast. It is not a copy of the resizer or converter with a new title — the operation is “contrast”.
Controls on this page: Contrast %. Output defaults to jpg.
Processed in your browser. Files are not uploaded.
Supported: JPG, JPEG, PNG, WEBP, GIF, BMP, HEIC, AVIF. Max 25 MB, 30 files.
Related tools
Image Brightness
Adjust brightness.
Image Rotator
Choose photos, rotate left or right on the preview, then download.
Image Flipper
See original, horizontal, vertical and both — pick the look, then download.
Image Blur
Blur a photo with a live 0–100% slider. Download when it looks right.
Image Pixelate
Pixelate / mosaic an image.
Image Grayscale
Convert an image to grayscale.
Image Contrast runs in this browser with Canvas. The file is not uploaded to imagecropx. Close the tab and the copy in memory is gone.
What this is not
There is no account and no file locker. If a format cannot be written, the tool says so.
How to use Image Contrast
- Choose a file for Image Contrast. It stays on this device.
- Set the controls for this tool (Contrast %).
- Process, then download. You can add more than one file if this image contrast lists a batch cap.
Questions about this tool
Does Image Contrast upload my file?
No. Processing is in this browser.
Can I use this on a phone?
Yes, with the same file-size cap (about 25 MB). A large photo is slower on a phone CPU than on a laptop.
Does Image Contrast upload the file?
No. This tool runs in the tab. See Privacy for decoder notes (HEIC, PDF.js worker).
What is the file size cap?
About 25 MB per file. Very large pixel counts are rejected so the tab stays responsive.