Brighten a dark picture, add some punch to a flat one, or turn it black and white. You see the change as you drag, and nothing is saved until you say so.
Drop it on the box above or pick it from your files.
Start with a preset if you like, then adjust. The picture updates as you go.
Press the button and you get a new file with the changes baked in.
If a picture looks flat or grey, contrast is usually the fix, not brightness. Brightness lifts everything equally, including the shadows that are meant to be dark, which is what makes an over-brightened photo look washed out.
If a photo was taken indoors under yellow light, pulling saturation down a little often looks better than trying to correct the colour directly.
For a photograph of a document, the clean scan preset is the useful one: high contrast and slightly reduced colour, which makes printed text read sharply and flattens out the shadow from your hand.
No. The work happens inside this tab, on your own machine. Open your browser's network tab while you use the tool, there is no request carrying your file.
None set by us. Very large files are limited only by your device's memory, and we warn you before that becomes a problem.
No, and there is no daily limit either. There is nothing to sign up for.
No. What you see is a preview on screen; the file on your device is only written when you press the button.
No. These are straightforward adjustments to brightness, contrast and colour — predictable, and the same every time.