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Sign PDF Online — Add Your Signature to a PDF

Add your signature to a PDF in a minute: draw it with your mouse or finger, type it in a handwriting font or upload an image, then click where it goes on any page — with today’s date if you like.

Runs in your browserUpdated
Drop a PDF file here or click to choose
Processed in your browser — never uploaded

Your data never leaves your computer. All processing happens 100% locally in your browser.

How to use the Sign PDF

  1. Drop the PDF you need to sign.
  2. Draw, type or upload your signature.
  3. Go to the right page and click where the signature goes; drag it into place and set the size. Add the date if needed.
  4. Click Download signed PDF.

Sign without printing or uploading

Most “free” e-sign services upload your contract to their servers and ask you to create an account. This tool works entirely in your browser: the PDF and your signature never leave your device. Your signature is added to the page as an image, the way a signed-and-scanned page would look, and the rest of the PDF — text, links, forms — stays as it was.

Is it legally binding?

In many countries (including under the US ESIGN Act and the EU eIDAS regulation) an electronic signature placed with the intent to sign is valid for most everyday agreements. Some documents — and some institutions — require a certified digital signature with an identity check instead. If in doubt, ask whoever requested the signature.

Private by design

Most online PDF services upload your document to their servers. This tool processes the file entirely in your browser with open-source libraries (pdf-lib and PDF.js), so contracts, invoices, bank statements and IDs never leave your device. It works offline once the page has loaded, and there are no file-count limits, watermarks or sign-ups.

Need to fill in text too? Use Add Watermark to PDF for stamps like “APPROVED”, and Protect PDF to lock the signed copy with a password.

Also searched as: sign pdf online, add signature to pdf, esign pdf, electronic signature pdf, sign pdf free, signature on pdf, fill and sign pdf.

Tools that pair well with the Sign PDF

  • Merge PDF — Combine several PDF files into one document.
  • JPG to PDF — Turn photos, scans and screenshots into a single PDF.
  • PDF to Word — Turn a PDF into an editable Word file.
  • ID Card Scanner — Photograph or upload the front and back of an ID card, driver’s license, residence permit or bank card, drag the corners to straighten each side, and get both on one A4 or Letter page at real size — ready to print or save as a PDF.

Frequently asked questions

How do I sign a PDF for free?
Drop the PDF, draw or type your signature, click where it goes and download. No account or upload needed.
Can I sign on my phone?
Yes. Draw the signature with your finger, then tap the page to place it.
Can I add more than one signature or initials on every page?
Yes. Click on each page where a signature or initials should go; every placement is listed and saved in the PDF.
Can I use a password-protected PDF?
No. Encrypted PDFs must be unlocked first — open the file in your PDF reader with the password and save or “print to PDF” an unprotected copy.
Are my PDF files uploaded?
No. Everything happens in your browser; the files never leave your device.
Can I install Sign PDF as a web app and use it offline?
Yes. Sign PDF is an installable web app (PWA) — installed from your browser, not downloaded from an app store. Click Install app at the top of this page in Chrome or Edge (Windows, macOS, Linux, ChromeOS) or on Android, use Share → Add to Home Screen on iPhone and iPad, or File → Add to Dock in Safari 17+ on a Mac. It then opens in its own window with its own icon, and because it runs entirely in your browser it keeps working offline. Firefox on desktop can’t install web apps. How installing works.

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