Transparent Signature Maker
Photograph your signature on paper, then strip the background so only the strokes are left — ready to drop onto any document.
Drop a signature image here, or click to choose
A phone photo of a signature on paper works — JPG, PNG or iPhone HEIC
100% on your device — your signature is never uploaded anywhere
Signing a document right now? Use the Sign PDF tool instead.
About this tool
Turn a photo of a signature on paper into a transparent PNG you can drop onto any document so it reads as if you had signed the page. Sign a blank sheet, photograph it, upload it here, and the paper is stripped away leaving only the strokes.
The usual jobs: keeping one signature file on hand for contracts and quotes, signing something HR wants back the same day, adding a signature to the bottom of an email or a delivery note, and filling in forms that have to go back as a file.
What separates this from cropping it yourself is that the transparency is graded, not binary. Most background removers make a yes/no decision per pixel: dark enough, keep it whole; not dark enough, delete it. That turns the edge of every stroke into visible stair-steps, and it always looks cut out. Here, pixels sitting between ink and paper keep a proportional transparency, so the line stays as smooth as it was on the page.
Other details that make the result actually usable:
- The paper's brightness is measured from your own photo, not assumed to be pure white — photographed white paper rarely is, and one corner is usually in shadow
- Auto-crop so the signature fills its frame instead of becoming a speck in an empty rectangle
- Rotate in 90° steps for a sheet you shot sideways
- Ink darkness for signatures made with a light pen
- Ink colour: original, black, blue or navy, to match what the document asks for
Free, no sign-up, no watermark, and everything happens on your device — the image is never uploaded. Note that the result is an image of a signature (the equivalent of signing paper and scanning it), not a certificate-based digital signature.
How to use
- 1Sign your name on a blank sheet of paper with a dark pen, then photograph it in good light so the signature fills the frame
- 2Drop the photo onto this page or pick the file (an iPhone .heic file works as-is — no need to convert it first)
- 3The paper background is removed straight away. If a coloured box is still showing, raise the removal strength; if the strokes start breaking up, lower it
- 4Adjust the ink darkness, switch the ink to black or blue, and rotate the image if you shot it sideways
- 5Download the PNG and drop it into Word, PowerPoint, Google Docs — or straight into a PDF signing tool
Frequently asked questions
- Why does it have to be a transparent PNG?
- A plain photo carries the paper with it as a rectangle, so pasting it onto a document drops a white (or, depending on the light, grey) box over the text and the signature line underneath. A transparent PNG shows only the strokes, exactly as if you had signed the page itself. A JPG cannot store transparency at all, which is why the output here is always PNG.
- Is my signature uploaded to a server?
- No. Opening the file, removing the background and saving the PNG all happen in your browser, on your device — the image is never sent anywhere. That matters more here than almost anywhere else on this site: your signature is what identifies you on binding documents, so it should not be sitting on someone else's server.
- Can I use an iPhone HEIC photo?
- Yes — upload the .heic file directly, no conversion needed. It is decoded in the browser: on iPhone and Mac the platform's own decoder does it instantly, and on Chrome, Edge and Firefox a decoder is fetched once and then reused.
- The strokes come out broken after the background is removed. What now?
- Lower the background removal strength and raise the ink darkness. This usually happens with a light-ink pen or a pencil, or a photo taken in dim light. Re-shooting in brighter light with a darker pen gives the best result — and shoot straight down, keeping the shadow of your hand or phone off the paper.
- Does changing the ink to blue still look handwritten?
- Yes. Recolouring keeps every stroke's own opacity and only replaces the colour, so the pen pressure and stroke ends survive instead of flattening into a stamp. Some bank and government forms specifically ask for blue ink, which is why the option is there.
- Can I go straight from the PNG to signing a PDF?
- Yes — take it into our Sign PDF tool. And if you are starting from a photo anyway, that tool's upload tab contains this same background remover, so you can do the whole job on one page.