Sign a PDF online — add your signature privately

Draw or type your signature, drop it anywhere on the page, and download the signed PDF. It all happens in your browser — your document is never uploaded.

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Signing a PDF should not require uploading a legal document to a stranger's server. Kameleo lets you sign entirely on your device: draw your signature with a mouse or finger, or type it in a handwriting font, then drag it exactly where it belongs and export the signed file.

Nothing is uploaded, so your contract, lease, or NDA stays private, and you can prove it — download a privacy receipt with locally computed SHA-256 hashes alongside the signed PDF.

Signed on your device

Your document is never uploaded. The signature is drawn and applied entirely in your browser.

Draw or type

Sign by drawing with a mouse or finger, or type your name in a signature font — then drag it into place.

Place it anywhere

Position and resize the signature on any page, add a date, and flatten it into the final PDF.

Downloadable receipt

Get a privacy receipt with on-device SHA-256 hashes — proof the signed file never left your machine.

How to sign pdf in three steps

  1. Drop your PDF onto the page — it stays in your browser, never uploaded.
  2. Draw or type your signature, then drag it onto the page and resize it to fit.
  3. Download the signed PDF, plus an optional privacy receipt proving it stayed on your device.

Frequently asked questions

Is signing PDFs free?

Yes. You can sign PDFs free with a daily limit on the free plan — no watermark, no account required to download the signed file.

Is my document uploaded to sign it?

No. The whole signing flow runs in your browser. Your PDF is never sent to a server, which you can verify in the Network tab.

Is this a legally valid signature?

For everyday agreements — rental forms, permission slips, internal approvals, freelance contracts between parties who trust each other — a visible drawn or typed signature is what's expected and is widely accepted. For signatures that must carry cryptographic legal weight (eIDAS qualified, for example), use a certificate-based provider; Kameleo's Sign tool creates a visible signature, not a qualified digital certificate.

Can I type my signature instead of drawing it?

Yes. You can type your name and render it in a handwriting-style font, or draw it freehand — whichever you prefer.

Can I add a date or initials too?

Yes. You can place multiple marks — signature, initials, and a date — anywhere on any page before exporting.

Does the signature stay put after downloading?

Yes. The signature is flattened into the page on export, so it renders identically everywhere the PDF is opened.

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