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Image Color Adjuster

Tune brightness, contrast and saturation of any photo with live sliders.

Adjust colours

Settings: No image loaded
Every pixel is adjusted on a local canvas and your photo is never uploaded.

How to use the Image Color Adjuster

  1. Choose the photo you want to correct from your device.
  2. Move the brightness, contrast and saturation sliders until it looks right.
  3. Click Download to save the adjusted image as a PNG file.

Features

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Frequently Asked Questions

Common questions about the free online image color adjuster.

Choose your photo and move the brightness, contrast and saturation sliders until the preview looks right, then download the PNG.
No. Every pixel is read and rewritten on a canvas in your browser, so your image never leaves your device.
Positive values lift the whole image towards white, while negative values pull it down towards black without clipping the highlights.
Contrast pushes pixels away from mid grey. Raising it deepens shadows and brightens highlights, while lowering it flattens the image.
Saturation scales how far each pixel sits from its grey equivalent. Minus 100 gives a greyscale image and positive values boost the colour.
No. The original file on your device is untouched and the preview is recalculated from the original pixels every time you move a slider.
Yes. Click Reset sliders to return brightness, contrast and saturation to zero and the preview returns to the original photo.
Yes. The tool is fully responsive and the sliders work with touch on phones and tablets as well as with a mouse.
Yes. It is completely free and unlimited, with no account, no sign-up and no watermark on your downloaded image.

Last updated: October 10, 2026