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Brightness Adjuster

Adjust image brightness levels online.

100% PrivateInstant ProcessingFree ForeverNo Signup
ToolBrightness Adjusterpixltools.com

Drag & drop your image

or click to browse

JPEGPNGWEBP· Max 10MB

🔒 Secure  ·  ⚡ Processed instantly  ·  🗑 Files never stored

About Brightness Adjuster

What it does

Adjust image brightness online for free. Lighten dark photos or darken overexposed images with a precise brightness control.

Our brightness adjustment uses Sharp's modulate function for natural-looking results that preserve color accuracy and tonal balance.

Perfect for fixing poorly lit photos, adjusting images for print vs screen display, and enhancing visual appeal.

How to Use

Step by step

1Upload your image.
2Set brightness level (0.5 to 2.0, where 1.0 is unchanged).
3Click Adjust to process.
4Download your brightness-adjusted image.

Key Benefits

Why use this tool

Precise brightness controlNatural-looking resultsFix dark or overexposed photosColor accuracy maintainedInstant processingFree to use

25+

Free Tools

100%

Free Forever

0s

Sign-up Time

Frequently Asked Questions

Common questions

1.0 is unchanged. Values above 1.0 increase brightness, below 1.0 decrease it.

Yes, but very dark photos may show noise or color banding when brightened significantly.

Slightly — our tool preserves hue and saturation as much as possible.

JPG, PNG, and WEBP are all supported.