Signature background remover
Turn a photo or scan of your signature into a transparent PNG.
JPG, PNG or WebP, or drop a file here. It stays on your device.
Your result appears here.
Photograph it so it works
Sign on plain white paper with a dark pen: black or deep blue gel, felt tip or ballpoint. Pale pencil and thin gray lines vanish when the paper is removed. Shoot in daylight near a window, hold the phone parallel to the page, keep your hand and phone out of the shadow, and let the signature fill most of the frame. A thicker line survives later shrinking better.
Threshold, ink and crop
The threshold decides how dark a mark must be to count as ink. Lower it when thin strokes disappear; raise it when paper texture or a shadow leaves gray specks. Check the result on the grid: transparent areas show the squares. Ink can stay as photographed, turn black, or turn blue. Crop to the ink trims the empty margin so the file is only as large as the signature.
After the clean-up
The transparent PNG drops straight into Word, Google Docs, slides and email. If a form asks for a set pixel size or a KB limit, use Resize this signature to carry the clean image to the signature resizer. To start from typing instead of a photo, open the signature maker.