Signature background remover — SI Background Remover

Give your signature a transparent background.

Signature background remover example before processing — Before

Signature background remover example after processing with transparent background — After

A public-domain historical signature on white processed with the shipped white-background formula. This example uses the actual output, including any soft edge pixels.

Get a useful result

Photograph or scan dark ink on clean white paper. Choose White background mode; it uses color math without a model download.
This mode makes white transparent everywhere. It is for ink and flat logos on white, so avoid it when the subject itself contains white areas you want to keep.
Crop close before choosing your file. Shadows, ruled paper and uneven lighting can remain; Erase can remove stray marks.

Free full-resolution PNG export, no signup or watermark. Processing and editing stay in your browser.

Read about quality and limitations · Example source credits