Adjust the brightness of an image
Make your image lighter or darker with one slider. You see the change as you drag, and the download keeps the full resolution.
Drag your image here
JPG, PNG, WebP, GIF, TIFF or SVG · or paste with Ctrl+V
0 is the original.
How it works
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Upload your image
Drop a file into the box or choose one on your device.
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Adjust the settings
The preview changes as you drag. Hold the compare button to see your original.
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Download the result
As PNG, JPG or WebP, at the same resolution as your original.
Step by step
Brightness adds or subtracts the same amount from every pixel. 0 is your original, positive values make the image lighter and negative values darker. The slider runs from −100 to +100.
A tip
Because every pixel moves by the same amount, a big change can turn deep blacks grey or push bright areas to pure white. For a more natural result on a photo that is too dark, try exposure or gamma. To make the difference between light and dark bigger or smaller afterwards, use contrast.
Frequently asked questions
What is the difference between brightness and exposure?
Brightness adds the same amount everywhere. Exposure multiplies the light, the way a camera does, which usually looks more natural on photos and keeps the blacks black.
Will the quality suffer?
No. The download has the same resolution as your original, unless the tool changes the size itself. Save as PNG to keep every detail, or as JPG or WebP for a smaller file.
Is my image uploaded?
No. Everything happens in your browser. Your image never leaves your device and is not stored.