Adjust brightness and colour
Lift a photo that came out dark, put some snap back into a flat one, or calm down oversaturated colour. Drag the sliders and watch the preview; black-and-white and sepia are one slider away.
What each slider does
Brightness scales the whole image up or down. Contrast stretches the difference between light and dark — up for punch, down for a softer look. Saturation controls colour intensity and reaches black and white at zero. Greyscale and sepia blend a finished tone in, reaching a full effect at 100%.
Rescuing a dark photo
Brightness alone makes a dark photo look washed out. Lift brightness to about 110-130%, then nudge contrast to 105-115% to firm it back up. Push too far and shadow noise appears, so check the preview closely.
When to go monochrome
Images where colour carries no information — scanned documents, line art — are clearer and smaller in black and white. Sepia reads as vintage; drop the saturation a little first for a more convincing result.
Frequently asked questions
Can I undo my changes?
Return the sliders to their defaults and the original look comes back. Your file is untouched until you download.
How do I make it black and white?
Take greyscale to 100%, or saturation to 0%. Both remove colour; greyscale keeps the tonal balance looking more natural.
Is there an auto-enhance?
No. The right values differ for every photo, so the tool is built around a live preview and manual control.
Does it work on a phone?
Yes. It runs in mobile browsers on iOS and Android: pick a photo from your camera roll, edit it and save the result straight back to your device. iPhone HEIC files are read directly.
Are my photos uploaded anywhere?
No. Everything the page needs is loaded when you open it, and your photo is processed entirely on your own device. The image never crosses the network, so there is nothing to intercept and nothing stored on a server.