Remove a flat background color
Knock out one solid color, such as a white page behind a logo or a scanned signature.

Details
Use this for a logo or a scan that sits on one flat color, usually white. The page turns that color transparent. It is a color key, not a cutout of a person. Hair, glass, shadows, and a busy photo will leave holes or leftover color. Start with a low tolerance and raise it only until the paper disappears.

Category: File conversion
Page: /tools/remove-flat-background
Text: /tools/remove-flat-background.txt

Limits
This is a color key, not a subject cutout. Hair, glass, and busy photos will look wrong.

Steps
1. Drop the image.
2. Pick the color, tolerance, and edge softness.
3. Download a transparent PNG.

Questions
Can it cut out a person?
No. It only removes pixels near the color you choose.

How do I sample the background?
Click the picture. The eyedropper reads that pixel.

Nothing is uploaded. Closing the tab drops the file.
The mask is computed on a canvas.