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Sign PDF

Draw, type or upload your signature, then place it on the PDF with your initials and the date. Your document and signature stay on your device: nothing is uploaded and no account is needed.

Updated by Khokhar Sab

How do I sign a PDF?

Press Choose a PDF to sign. Press Signature, then draw it, type your name or upload a photo, and press Use this signature. Click the page where it goes; drag to move it and drag the corner to resize. Add Initials or Date the same way. Press Save signed PDF, then Download.

  1. Press Choose a PDF to sign.
  2. Press Signature and draw, type or upload it.
  3. Click the page to place it; drag to adjust.
  4. Add Initials or Date if needed.
  5. Press Save signed PDF, then Download.

How do I sign a PDF on a phone?

Open this page in Safari or Chrome, choose the PDF from your files, press Signature and draw with your finger on the white box. Tap the page where the signature goes; drag it into place. The page works without installing an app or creating an account.

Is a signature added this way legally binding?

In the United States and elsewhere, a drawn or typed electronic signature can be valid, depending on the document and local law; the US ESIGN Act covers this. This tool adds a picture of your signature; it does not verify identity or keep an audit trail. For contracts that need those, use an e-signature service. General information, not legal advice.

Need the document itself first? The NDA template, the bill of sale maker and the offer letter template each print signature lines, so you can sign the PDF here afterwards. For a tamper-evident certificate signature, use Digital Signature PDF.

What happens to a PDF that is already digitally signed?

Rewriting a signed file would break its digital signature. Instead, this tool adds your changes as an update after the original, leaving every original byte in place, so readers can still check the earlier signature. In our build test, a signed file of 1.1 KB kept all of its original bytes unchanged after a signature was added.

Run on 2026-10-16 by the site build with the tool's own code.
StepResult
Original signed file1.1 KB
After adding a signature2.4 KB, saved as an update
Original bytes unchangedYes

Is it safe to sign a PDF online?

Signing sites that work on a server upload your document and signature to their servers. Here, both stay in your browser: the file is read on your device, the signature is drawn into it on your device, and the result downloads straight back. A remembered signature is kept in this browser's storage, which you can clear at any time.

Limits and fixes

  • Not a certificate signature: the signature is a picture; it does not prove who signed or detect later changes.
  • No sending for others to sign: this signs your own copy. Send the signed PDF by email yourself.
  • Locked PDFs need their password removed first with Unlock PDF.
  • Text in Chinese, Japanese or Korean cannot be saved yet; draw it instead with Signature, which works in any language.

Frequently asked questions

Is it free?

Yes, with no account, no watermark and no limit on documents.

Is my signature stored?

Only if you tick Remember on this device, and then only in this browser. Forget saved signatures removes it.

Can I sign every page?

Yes. Place the signature or initials once, select it, then pick Copy to and Every page in the small bar.

Can I change the ink color?

Yes: black, blue or red, for drawn, typed and uploaded signatures.

Can I fill in a form before signing?

Fill the form in your PDF reader first, or use Create Fillable PDF to add fields.

Learn more

How this tool was built and tested