When to use Sign PDF
A freelance designer receives a client contract via email and needs to return it signed by end of day — no printer, no scanner, no DocuSign subscription. Draw your signature with a mouse or finger on the canvas, type it in a script font, or upload a photo of your handwritten signature. Then drag it onto the correct line on any page of the PDF. pdf-lib embeds the signature image directly into the page content on your computer and produces a new signed PDF you can attach and send in minutes. The signature becomes part of the static page — it shows in every reader and prints cleanly. Note that this places a visual signature; for an audit-trailed legally binding e-signature, a dedicated platform is the right tool.
- Return a freelance contract signed by end of day without printing
- Sign a rental agreement on your phone before a same-day move-in
- Add an approval signature to an internal document before forwarding to HR