Signature background remover: clean and see-through.

Sign on paper, take a photo, and get a crisp signature with no background, ready for forms, PDFs and documents.

No paper, no shadowsUneven light and grey paper are cleaned away.
Black or blue inkOr keep the colour of your pen.
Stays on your deviceThe file is opened and saved in your browser. It isn't uploaded.

How it works

Add a photo of your signature
Taken from above, in good light.
Pick the ink
Black, blue or as it is.
Download
A see-through PNG.

How to make a transparent signature PNG

Clean signature turns a phone photo of your signature into a crisp image with no paper behind it, ready to place on forms and documents.

Sign on plain white paper with a dark pen. Make the signature a good size, not tiny in a corner.

Take the photo straight from above in good light, with the signature filling most of the frame.

Add the photo. You can add up to 10 photos at once.

Choose the ink colour: black, blue, or as in the photo.

Leave Pick up on Normal to start, and keep Cut away the empty paper ticked so only the signature is left, with a small border.

Press Clean my signature and download the PNG.

How the signature background remover works

A photo of white paper is rarely white. It has shadows, a grey tint and a brighter patch where the light falls. Instead of using one brightness for the whole photo, this tool compares each spot with the paper right around it. That way a shadow across one corner is treated as paper, while your pen strokes are kept. The ink is then redrawn in the colour you picked, and everything else becomes see-through.

Signature for an online form, invoice or document

Admission, scholarship and job forms often ask for a scanned signature. Many want a JPG with a white background under a set KB. Put the PNG through Photo to KB: it saves a JPG with white behind the ink and fits it under the limit.

On invoices and quotations, upload the PNG in Invoice Studio so it sits neatly over the line.

In Word, Google Docs or a design app, a see-through signature can be placed over a signature line without a white box around it.

It also works on a rubber stamp photographed on white paper. Choose As in the photo to keep the stamp's colour.

Fixing a signature that isn't clean

Bits of shadow or paper texture left behind: choose Only the darkest strokes.

Thin parts of the signature missing: choose Faint strokes too, especially with a light ballpoint.

Lines from ruled paper showing: sign again on blank paper; the tool can't tell printed lines from ink.

Edges look jagged: take the photo closer so the signature has more pixels. Large photos are worked on at up to 2,000 pixels on the long side.

Getting a good photo of your signature, kept private

A signature is personal, so this tool doesn't upload it. The cleaning happens in your browser and the PNG is saved straight to your phone or computer. Keep the file somewhere safe and only share it where you mean to sign.

The cleaner the photo, the cleaner the e-signature from photo will be. Sign a few times on a fresh white sheet and pick the neatest one. A gel pen or a dark felt-tip gives solid strokes that are easier to pick up than a faint ballpoint. Place the paper on a flat table near a window in daylight, and hold the phone directly above it so the signature isn't stretched. Don't use the flash, which leaves a bright spot in the middle. If you need to sign in two colours, for example blue for one form and black for another, clean the same photo twice and pick a different ink each time.

Questions people ask

How do I make my signature transparent?

Take a photo of your signature on white paper, add it to Clean signature and download a see-through PNG in black or blue ink.

My form wants the signature as a JPG under 20 KB. What do I do?

Clean it here, then add the PNG to Photo to KB and choose 20 KB. You get a JPG with a white background that fits.

Why are bits of shadow left around my signature?

Choose Only the darkest strokes under Pick up, or take the photo again in even light.

Can I make my signature blue?

Yes. Choose Blue as the ink colour, or keep the colour of your pen.

Can I draw my signature here instead of taking a photo?

Not in this tool. In Invoice Studio you can draw, type or upload a signature for the invoice.

Can I clean a company stamp the same way?

Yes, if it is photographed on light paper. Choose As in the photo to keep the stamp's colour.