Sign PDF
Sign a PDF with your own signature: upload a photo of it (the paper background is removed) or draw it, then place it, plus an optional date or initials, anywhere on any page. Nothing is uploaded.
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What signing a PDF here actually does
Most everyday paperwork — a lease, a consent form, an invoice approval, an HR letter — only needs your signature to appear on the page, as it would if you printed, signed and scanned it. This tool does exactly that without the printer. You give it your signature, either a photo of it on paper or one drawn with a mouse or finger, and place it where it belongs. The signature is written into the PDF as an image at that exact spot; every other part of the document is left as it was, so its text stays sharp and selectable and the file is not turned into a stack of pictures.
A photo of a signature brings the paper with it: grey, slightly yellow, often shadowed. The tool separates ink from paper by comparing each pixel with the paper brightness around it, so uneven lighting does not leave a grey patch, then crops tightly to the ink. The result is a clean signature on a transparent background that sits on the document like real ink. It is also what it looks like: an image of a signature. It is not a certificate-based digital signature that cryptographically proves who signed, which some legal and official processes require.
Why sign in your browser
The documents people sign are the ones they should least want to upload: contracts with salaries and addresses, tenancy agreements, medical consents, bank forms. Most online signing services store both the document and an image of your signature on their servers.
Here nothing is uploaded. The PDF is opened, displayed and changed by your own browser, and your signature never leaves the tab unless you choose to remember it, in which case it is kept only in this browser's storage on this device.
Tips for a clean signature
- Sign on plain white paper with a dark pen and photograph it in daylight, straight on, filling most of the frame.
- If paper texture or a shadow survives, raise the Remove background slider; if thin strokes vanish, lower it.
- Choose Black or Blue ink to make a photographed signature look like fresh pen on any document.
- Use Copy to every page for initials that a contract wants on each page.
- A PDF that asks for a password when it opens has to be saved as an unprotected copy in your PDF reader before it can be signed.
Quick start: signing a PDF
- Choose the PDF to sign.
- Upload a photo of your signature, or switch to Draw and sign with your mouse or finger.
- Click Place signature, then click the spot on the page where it should go.
- Drag it into position, pull the corner to resize, and use the slider to rotate it if needed.
- Optionally add today's date or your name or initials the same way.
- Click Download signed PDF.
To sign a scanned form or a photo of a document instead, use Sign Image. To mark a document DRAFT or CONFIDENTIAL rather than sign it, use Add Watermark to PDF.
Frequently asked questions
Is a signature added this way legally valid?
For many everyday agreements an image of your signature is accepted, the same way a signed scan is. Some contracts, government filings and regulated industries require a qualified or certificate-based electronic signature, which this tool does not create. If in doubt, ask whoever receives the document.
Is my document or signature uploaded?
No. Everything happens in your browser. The signature is stored only if you tick Remember, and then only in this browser on this device.
Can I sign several pages?
Yes. Place the signature on as many pages as you like, or select it and use Copy to every page.