Sign a PDF Online (Free, No Signup)

Draw your signature, click to place it on the page, and download the signed PDF. Works on Windows, Mac, and phones, with no Adobe software and no account.

100% freeNo signupRuns in your browserNothing is uploaded

Drop your PDF here, or browse

PDF only, up to 20MB

Your PDF never leaves your browser. Nothing is uploaded or stored.

How to sign a PDF on any computer

  1. Open your PDF. Pick the file above. It stays on your device the whole time.
  2. Draw and place your signature. Sign with your mouse, trackpad, finger, or stylus, then click where the signature belongs.
  3. Download the signed copy. The signature is embedded into the PDF, ready to send or print.

Need someone else to sign it too?

This tool flattens your signature image into the file, which is fine for documents you sign yourself. It cannot do what a contract between parties needs:

No private signing links to send to the other party
No identity capture or tamper-evident audit trail
No automatic reminders when someone has not signed
No final executed copy delivered to every signer
Free plan, no credit card required.

Frequently asked questions

Is signing a PDF this way legally binding?

For documents you sign and keep yourself, like forms, letters, and internal paperwork, a placed signature image is widely accepted. It is recognized under laws like the E-SIGN Act for most business documents, but it carries no audit trail, so for contracts between parties you should use an e-signature platform that records identity, timestamps, and document integrity.

Does this work on Windows, Mac, and phones?

Yes. It runs in any modern browser, so it works the same on Windows, macOS, Linux, iPhone, and Android. No Adobe software or installation needed.

Is my PDF uploaded to your servers?

No. The file is opened and signed entirely inside your browser using local JavaScript. It never leaves your device, and nothing is stored when you close the page.

Can I place my signature on multiple pages?

Yes. Draw your signature once, then click to place it as many times as you need across any pages before downloading.

What if someone else needs to sign the same document?

That is what Zignt itself does: upload the document once, add signature fields for each person, and every signer gets a private link. Everyone receives the final signed PDF automatically, backed by a tamper-evident audit trail. The free plan covers unlimited signatures.

Keep reading