Adjust Image Gamma Online
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What you can expect
Adjust the gamma of your image with a single slider. Values below 1 brighten midtones while values above 1 darken them, leaving pure black and white fixed.
Related tools
More BrushCue tools that fit this workflow.
Brightness Adjust
Adjust image brightness online with live preview. Lighten or darken photos instantly using this free browser-based brightness adjustment tool.
Exposure Adjust
Adjust the exposure of your image using exposure steps. Mimics the effect of increasing or decreasing the exposure when taking a photo.
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Online Photo Enhancement Tools
→Frequently asked questions
- How do I adjust the gamma of an image?
- Select your file, then drag the gamma slider. Values below 1 brighten midtones, values above 1 darken them.
- What does 1.0 mean?
- At 1.0 the image is unchanged. Pure black and pure white stay fixed at any setting; only the midtones move.
- How is gamma different from brightness?
- Brightness shifts all tones uniformly, while gamma applies a power curve that reshapes midtones and preserves the black and white points.
- What file formats can I export?
- You can export as PNG, JPEG, WebP, TIFF, BMP, or HEIC.
- Is this tool free to use?
- Yes — completely free, no account needed. Your images are processed entirely in your browser and never uploaded to a server. Downloads have no watermarks.
For developers
Use Gamma Adjust from Python
Open the Jupyter notebook example to see how to run this tool from the BrushCue Python API, inspect the processing steps, and adapt the workflow for scripts or batch image jobs.
View Python notebookBuild your own
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