Sign PDF

Add a drawn or typed signature to a PDF, right in your browser — no upload, no account, no daily signing limit like most free competitors impose.

Click or drag a PDF file here

Processed entirely in your browser — your PDF is never uploaded. This stamps a visual signature image onto the page; it isn't a cryptographic digital signature, so it doesn't provide tamper-evidence or identity verification the way a certificate-based e-signature service does.

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Why use Sign PDF?

Most free PDF signing tools process your document on their server and cap free usage at a document or two per day specifically because each one costs them compute — a limitation that has nothing to do with what's technically possible and everything to do with their business model. Since this tool does the entire job (drawing the signature, reading the PDF, placing the image, regenerating the file) in your browser, there's no server cost per signature and no reason to impose a daily cap. What it produces is a visual signature stamped onto the page — the same kind of mark you'd leave signing a printed form, just placed digitally. That's the right tool for personal documents, internal forms, and informal agreements; it isn't a cryptographically verified digital signature with an audit trail, which is what legally binding contracts generally need from a dedicated e-signature platform.

Key benefits

No daily signing limit — competitors typically cap free use at 1-2 documents a day
No account or upload required
Draw or type — two ways to create your signature
Free, unlimited use

Features

Freehand signature drawing (mouse or touch)
Typed cursive-style signature option
Position presets: corners, edges, and center, on any page

Popular use cases

Signing a personal document without creating an account
Adding a signature to a form or letter before sending it
Quickly signing multiple documents without hitting a free-tier daily cap

How to use Sign PDF

1
Upload a PDF
Choose the file you want to sign.
2
Create your signature
Draw with your mouse/finger, or type your name in a cursive style.
3
Choose page and position
Which page, and where on it.
4
Sign and download
Get the signed PDF instantly.

Frequently asked questions

Is this a legally binding e-signature?

No — this stamps a visual signature image onto the PDF page, which is appropriate for personal documents, informal agreements, and forms that just need a signature mark. It doesn't provide the certificate-based identity verification or tamper-evident audit trail that legally significant contracts typically require — use a dedicated e-signature service (like DocuSign or Adobe Sign) for those.

Is my PDF uploaded anywhere?

No — the entire process, from reading the PDF to placing the signature to generating the signed file, happens in your browser. Nothing is sent to a server.

Can I sign a password-protected PDF?

No — remove the password first (a password-protected PDF can't be read or modified without it). This tool detects and flags password-protected files rather than failing silently.

Why do other free PDF signers limit how many documents I can sign?

Free tiers on hosted PDF tools typically cap usage (often 1-2 documents/day) to push users toward a paid plan, since each signature they process costs them server resources. Since this runs entirely in your browser, there's no server cost per signature and no reason to cap it.

Last reviewed: September 2026

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