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Sign PDF

Add a handwritten signature to any PDF for free, right in your browser — draw your signature, place it where you want, and download the signed file. Your PDF and signature never leave your device: no upload, no account, no watermark.

Privacy: your files never leave your device. All processing happens locally in your browser.

How to use

  1. 1.Click Browse PDF and choose the document you want to sign. The tool reads it locally and shows the page count — nothing is uploaded.
  2. 2.Draw your signature in the signing box with your mouse, trackpad, stylus, or finger. Adjust the ink color and pen width, and use Clear to redo it if needed.
  3. 3.Pick where the signature should go (bottom right, bottom left, top right, top left, or center) and, for multi-page files, choose which page to sign.
  4. 4.Click Apply signature, then download the signed PDF. Your signature is embedded on a transparent background and the whole process happens in your browser.

About Sign PDF

Sign PDF lets you add a handwritten signature to any PDF document and download the signed file, entirely inside your web browser. There is no account to create, no email to hand over, and no file that ever leaves your computer. Both your original PDF and the signature you draw are processed locally with JavaScript, so sensitive contracts, agreements, forms, and letters stay private on your own machine instead of being uploaded to a stranger's server the way most online signing sites require. Because everything runs on the page, the tool is fast, works offline once it has loaded, and never stores anything after you close the tab.

Using it is simple. First, choose the PDF you want to sign. The tool reads the file and shows how many pages it has. Next, draw your signature in the signing box with your mouse, trackpad, stylus, or a finger on a touchscreen, exactly as you would sign on paper. You can pick any ink color and adjust the pen width so the stroke feels natural, and a Clear button lets you practice as many times as you like before you keep it. The signature is captured on a transparent background, which means it layers cleanly onto the document without a white box around it.

Once your signature looks right, decide where it should go. Choose a position — bottom right, bottom left, top right, top left, or center — and, for multi-page documents, pick which page to sign. When you click Apply signature, the tool embeds your signature image into the PDF at the spot you chose, automatically scaling it so it fits the page and never spills over the edges, and gives you a download link for the finished file. The output is a standard PDF you can print, email, or archive, and it carries no watermark and no branding from this site.

A clear word on how the coordinates work: PDF pages are measured from the bottom-left corner, so the tool carefully converts your chosen position into the correct place on the page, whether that is near the footer for a typical signature line or near the header. You do not have to think about any of this — you just pick a corner or the center and the signature lands where you expect.

Please read this honestly, because it matters: this tool adds a visual signature image to your PDF. It is not a certified digital signature and not a cryptographic (PKI) signature. It does not embed a digital certificate, a private key, a tamper-evident hash, or an audit trail, and it does not verify your identity or lock the document against later changes. A pasted or drawn signature image can still carry legal weight in many everyday situations — approvals, internal sign-offs, personal letters, simple agreements — depending on where you live, what you are signing, and whether all parties accept it, but that comes from the surrounding agreement and applicable law, not from the image itself. If you need a legally certified e-signature with identity verification and a tamper-proof record, use a dedicated e-signature platform that issues a digital certificate. Think of this tool as the fastest, most private way to drop a real handwritten signature onto a PDF while keeping every byte of your document on your own device.

Common questions include whether files are uploaded (they are not), whether this is a legally binding digital signature (it is a visual signature image, not a PKI signature), and whether it works on phones (yes — you can sign with your finger). If you sign paperwork often, bookmark this page: it loads instantly and keeps your documents private.

Frequently asked questions

Is this a legally binding digital signature?
No. This tool adds a visual handwritten signature image to your PDF — it is not a certified digital signature and not a cryptographic (PKI) signature. It contains no digital certificate, private key, tamper-evident hash, or audit trail, and it does not verify your identity. A signature image can still carry legal weight in many everyday cases, but that depends on your jurisdiction, what you are signing, and the agreement between the parties — not on the image. For certified, identity-verified signing, use a dedicated e-signature service that issues a digital certificate.
Is my PDF or signature uploaded anywhere?
No. Your PDF is read, and the signature is drawn and embedded, entirely inside your browser with JavaScript. Nothing is sent to a server, no account is required, and nothing is stored once you close the tab — so it is safe for sensitive or confidential documents.
Can I choose where the signature goes and sign a specific page?
Yes. You can place the signature in the bottom right, bottom left, top right, top left, or center, and for multi-page PDFs you can pick exactly which page to sign. The signature is scaled automatically so it fits the page and never runs off the edge.
Can I sign on my phone or tablet?
Yes. The signing box supports touch and stylus input, so you can sign with your finger or a pen on a phone or tablet, then download the signed PDF just like on a desktop.
Does the signed PDF have a watermark?
No. The downloaded PDF contains only your original document plus your signature image. There is no watermark and no branding from this site, and because everything is local it also works offline once the page has loaded.

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