Adjust brightness, contrast and saturation
Three sliders and a preview of exactly what you will download.
Drop files here
or click to choose from your deviceAccepted: JPG, JPEG, PNG, WEBP, AVIF, GIF, BMP, HEIC, HEIF
Up to 3 files per runUp to 20 MB per file5 runs per dayRemove limits with Pro✓ Works offline
Your files stay on your device
This tool runs entirely in your browser. Nothing is uploaded, nothing is stored, and you can even turn off your internet connection before you start.
How it works
- Drop one or more images onto the box. The first one is shown as a preview.
- Move the sliders. Brightness lightens or darkens everything, contrast pulls the lights and darks apart, and saturation makes the colours stronger or weaker — all the way down is grayscale.
- Watch the preview as you go: it is the same calculation as the download. Set a slider back to 0 to undo it.
- Select Apply. Every image gets the same settings.
Frequently asked questions
- Is the preview the same as the result?
- Yes. The preview runs the same arithmetic on the same pixels as the download, only on a smaller copy of the picture, so what you see is what you get.
- Does adjusting lower the quality?
- Adjusting changes the pixels, and pushing a slider far can flatten detail in the brightest or darkest areas. PNG and lossless output keep the result exactly; JPG is saved again at high quality.
- Can I fix several photos at once?
- Yes. Drop them together: the sliders are set on the first one and applied to all of them, which suits a set of photos taken in the same light.
- Is my photo uploaded, and what are the free limits?
- It is not uploaded; the pixels are changed in your browser. The free plan allows 3 images of up to 20 MB per run and 5 runs a day. Pro removes these limits.
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