Adjust Brightness, Contrast and Saturation
Rescue a photo that came out dark, flat or over-saturated.
Drop a file here
or click to choose a file
Runs on your device Your file is processed by your own browser and is never uploaded to a server.
Short answer
Brightness, contrast and saturation can be adjusted in a browser without uploading the image. The three are applied in that order to every pixel: brightness scales each channel, contrast expands the values around mid-grey, and saturation moves each channel towards or away from the pixel's own luminance. Applying them in a fixed order is what keeps the three controls independent of each other.
At a glance
| Accepts | JPG, PNG, WebP, GIF, BMP |
|---|---|
| Produces | Same format as the original |
| Processing | In your browser |
| Price | Free, no limits |
| Account | Not required |
Three controls cover most of what goes wrong with a snapshot. A photo taken against a window comes out dark; brightness fixes it. A photo taken in flat light has no punch; contrast fixes that. A photo from a phone that over-eggs the colour needs saturation pulled back, and a dull one needs it pushed up.
Saturation at zero is greyscale, and it is the same calculation the dedicated black-and-white tool performs — so if that is all you want, either tool gets you there.
How to use it
- 1
Add the image
Drop in a photo or a screenshot.
- 2
Set the three controls
Each defaults to unchanged, so you only move the ones you need.
- 3
Download it
Compare at full size before you use it — small previews hide clipping.
Frequently asked questions
Can I recover a photo that is very overexposed?
Only partly. Where an area has gone pure white every channel is already at its maximum and there is no difference left between neighbouring pixels to bring back. Pulling brightness down makes the rest of the picture usable but leaves those areas flat grey.
Does it edit the original file?
No. The original is read, never written. What you download is a new image, and the file you chose is untouched on your device.
Why does strong contrast lose detail?
Because contrast works by pushing values away from the middle, and anything pushed past 0 or 255 stops at that end. The detail in the deepest shadows and brightest highlights is the first to go, which is why the stronger settings suit flat images and ruin well-exposed ones.