Brightness & Contrast

Improve underexposed photos or boost contrast and saturation.

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Click or drag image here

JPG, PNG, WebP supported · Max recommended 25MB

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About this tool

Adjust the brightness, contrast and saturation of any photo online for free with ResizerPhoto. Fix underexposed or overexposed photos, boost dull colors or tone down oversaturated images — all directly in your browser without any software.

Key features

Adjust brightness from dark to bright
Control contrast for deeper or softer tones
Boost or reduce color saturation
Works with JPG, PNG and WebP
Browser-based — no server upload
Free with no limits

Common uses

Brighten underexposed indoor photos
Fix overexposed outdoor shots
Boost color saturation for social media
Reduce contrast for a soft flat look
Correct phone camera auto-exposure errors

Frequently asked questions

How do I fix a dark photo?

Upload your photo and increase the brightness slider until the image looks naturally lit. Adjust contrast if needed to restore depth.

What is the difference between brightness and contrast?

Brightness makes the whole image lighter or darker equally. Contrast increases or decreases the difference between dark and light areas, adding or reducing depth.

What does saturation do?

Saturation controls color intensity. Higher saturation makes colors more vivid. Lower saturation moves toward black and white.

Will adjusting brightness reduce quality?

Minor adjustments have no visible quality impact. Extreme adjustments on already-compressed JPG images may show some artifacts.

Can I reset adjustments?

Click Upload New to start over with the original image.