free · no account · no watermark
Add signature to PDF
Draw, type or upload a signature and place it on the page. Runs in your browser — your signature and your contract never leave the tab.
Your signature is strokes, not a photo — so it never comes out blurry.
No file at hand? Open Sign PDF anyway →
Your browser would not let the file travel between pages (private mode does this) — open Sign PDF and drop it there instead.
Three steps · no account
How the room works
Watch it run — or tap a step to see where it happens.
Three questions
Questions
Is Sign PDF free?
Yes — free, with no watermark, no account and no daily cap. It runs entirely in your browser, so there is nothing to meter.
Does my file get uploaded?
No. Everything happens in this browser tab — the file never leaves your device. You can keep the Network tab open while it runs: no request carries your file.
Do I need an account?
No. This tool is exactly the same signed in or out.