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Remove a signature's background

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.

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

or click to select it

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