Sign PDF
Drop a hand-drawn or typed signature onto any page of a PDF. 100% browser-based — no upload.
Quick answer: Sign PDF: drop a hand-drawn or typed signature onto any page of a PDF. 100% browser-based — no upload. Runs entirely in your browser, free, no signup.
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This tool places a drawn or typed signature onto a page as a high-resolution transparent PNG, rebuilding the PDF entirely in your browser with pdf-lib — the file never uploads, which is exactly what you want for a contract or an NDA. Your stroke is rasterized at high DPI so it stays crisp when the document is printed at A4 or Letter size, rather than turning into blurry pixels.
Be clear about the legal category, though. A drawn image signature is a simple electronic signature, perfectly adequate for everyday agreements like rental forms, internal approvals, and consent slips in most jurisdictions. It is not a digitally certified signature with cryptographic proof of identity — for that tier, which some regulated documents require, use a service such as DocuSign or Adobe Sign.
You can drop the same signature on multiple pages or add separate initials, and any placed mark can be moved, resized, or deleted before you export. If the finished document also needs to be locked down, follow up by adding password protection with the protect PDF tool so recipients cannot alter it after signing.
Frequently asked questions
- Is this a legally binding e-signature?
- It's a drawn signature embedded as an image — sufficient for everyday agreements (rental forms, internal approvals, NDAs in most countries). For digitally certified signatures with cryptographic proof of identity, use a service like DocuSign or Adobe Sign.
- Does my PDF get uploaded?
- No. Rendering, signing and saving all happen locally using pdf-lib and the canvas API. Open DevTools → Network and you'll see no requests fire while you sign.
- Can I add multiple signatures or initials?
- Yes — draw once, then drag the signature onto any page. Use the 'add another' button to draw a separate one (e.g. initials).
- Will the signature stay sharp when I print?
- Yes — your stroke is rasterised at high DPI to a transparent PNG, so it stays crisp at A4 print size.
- Can I delete or move a signature after placing?
- Yes — click any placed signature to select it, then drag, resize, or delete with the toolbar.