My photo has shadows and grey paper — will it still work?

Yes. Ink is judged against local brightness, which cancels shadows and uneven light. If specks remain, lower the sensitivity or raise Remove specks; if strokes look broken, raise the sensitivity. A straight-on photo in even light gives the best result.

How do I put the signature on a PDF contract?

Download the transparent PNG, open the Sign PDF tool on this site, load your PDF and the signature image, and drag it into place. Because the background is transparent, there is no white box around it.

Are my files uploaded to a server?

No. Everything runs locally in your browser via WebAssembly. Files never leave your computer and are discarded when you close the page.

Do I need to sign up or pay?

No. The site is completely free, requires no account, has no usage limits and adds no watermarks.

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🖋️Signature Maker - Turn a Signature Photo into a Transparent PNG or Draw One Online

Need a clean signature image for contracts, forms or documents? Option one: sign a sheet of white paper, snap a photo and upload it. The tool detects ink with an adaptive, local-brightness threshold, so paper tint, uneven lighting and shadows disappear; stray specks are cleaned up, the ink is recoloured to black, blue or any colour you like (or kept as is) and the result is cropped to the signature as a transparent PNG. Option two: sign directly on the on-screen pad with a mouse, touchscreen or stylus — stylus pressure changes the stroke width, while mouse and touch strokes taper with writing speed — then undo, change colour and export a high-resolution transparent PNG or a vector SVG. The result drops straight into the Sign PDF tool on this site. Everything happens in your browser; your signature is never uploaded.

Free · No sign-up · Runs in your browserLast updated: 2026-10-26

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How to use Signature Maker

1Choose Extract from a photo and upload a picture of your signature, or switch to Draw a signature
2In photo mode tune sensitivity, smoothing, speck removal and ink colour while watching the transparent preview; in draw mode pick a colour and width
3Download the transparent PNG (or SVG) and place it on your document with the Sign PDF tool

FAQ

My photo has shadows and grey paper — will it still work?: Yes. Ink is judged against local brightness, which cancels shadows and uneven light. If specks remain, lower the sensitivity or raise Remove specks; if strokes look broken, raise the sensitivity. A straight-on photo in even light gives the best result.
How do I put the signature on a PDF contract?: Download the transparent PNG, open the Sign PDF tool on this site, load your PDF and the signature image, and drag it into place. Because the background is transparent, there is no white box around it.
Are my files uploaded to a server?: No. Everything runs locally in your browser via WebAssembly. Files never leave your computer and are discarded when you close the page.
Do I need to sign up or pay?: No. The site is completely free, requires no account, has no usage limits and adds no watermarks.