Sign a PDF

Updated October 20, 2026 · Free, no sign-up, no upload

Draw or type your signature, tap the spot on the page, and download the signed PDF. Your document and your signature never leave your device.

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How to use it

Choose your PDF. Its first page appears; use Previous and Next to find the page to sign.
Make your signature. Draw it with your finger, a pen or the mouse, or type your name.
Tap where it goes and adjust the size, then press Sign and download.

Why it doesn't upload your files

Most online PDF tools send your document to their server, process it there and send it back. This one does the work in your browser with open-source libraries (pdf-lib and Mozilla's PDF.js), so contracts, IDs and bank letters stay on your device.

Questions

How do I sign a PDF online for free?

Choose the PDF on this page, draw or type your signature, tap where it should go and press Sign and download. It is free, with no account and no watermark.

Are my files uploaded?

No. The tool runs in your browser on your own device. Your PDF is never sent to our server or anyone else's, and it is gone when you close the page.

Is a signature added this way legally valid?

It is an electronic signature: an image of your signature on the document. Many everyday documents accept it; some require a certificate-based digital signature instead. If in doubt, ask whoever sent you the document.

Can I sign a PDF on my Android phone?

Yes, this page works in your phone browser. The free Kind PDF app also signs PDFs offline, fills in form fields and can save your signature for next time.

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On Android? Do it offline, and moreKind PDF is our free PDF app for Android: PDF to Word, combine, split, compress, sign and scan, all on your phone with no watermark and no account.

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