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Remove a signature's background

Turn a photo of your signature into an image with a transparent background, ready for documents, directly in your browser.

Processed on your device. Nothing is sent to any server.

or click to select it

Turn a photo or scan of a signature into an image with a transparent background, ready to drop into a document, directly in your browser.

Analyzes each pixel's brightness and makes the paper (light tones) transparent while keeping the ink (dark tones), with edge softening on the stroke. It's a classic image threshold, no AI or model to download — faster and more accurate than a subject-segmentation model for this specific case.

Use cases

  • Inserting a handwritten signature into a PDF or Word document.
  • Preparing a signature for a digital contract or online form.
  • Saving your signature once, transparent, to reuse it forever.

How it works

  1. 1

    Upload the photo of the signature

    Ideally on white paper with good lighting. The threshold is calculated automatically.

  2. 2

    Adjust the sensitivity if needed

    Raise it if paper shadows remain; lower it if fine strokes of the signature disappear.

  3. 3

    Download the PNG

    With a transparent background, ready to paste into a PDF, Word doc, or form.

Frequently asked questions

Do I need a perfect photo?

It works best with even lighting and no strong shadows on the paper. If the result leaves shadow residue, adjust the sensitivity control.

Can I use it with colored ink, not just black or blue?

Yes — the threshold is based on brightness (light vs. dark), not color, so it works with any ink shade that contrasts with the paper.

Related tools

← Image