Sign PDF online
Sign a PDF yourself in seconds, or send it to others to sign by email. Every signature comes with an audit trail of who signed and when.
PDF • Up to 50 MB · or drop a file here
Free to try, no sign-up needed
How to sign a PDF
Open your PDF
Choose the document you need to sign.
Add your signature
Draw, type or upload your signature, then place it, your initials and the date where they belong.
Download it signed
Get the signed PDF, with an optional page recording who signed, when, and from where.
What you can do with Sign PDF
Sign it yourself
Draw with a mouse or finger, type your name, or upload a picture of your signature.
Send for signature
Email a PDF to the people who need to sign. They sign from the link, without an account.
Audit trail
Each signed document records who signed, when, their IP address, and a fingerprint of the file before and after.
Understand before you sign
People you send a document to can ask questions about it and get plain answers before they sign.
Reminders
Remind signers who haven't signed yet, and see where each request stands.
Keep everything together
Documents you send for signature are kept with your account, with their signed copies and certificates, ready to download again.
Questions about Sign PDF
Is an electronic signature legally binding?
In many countries, including the US (ESIGN Act and UETA) and the EU (eIDAS), electronic signatures are legally valid for most documents. Some documents, such as wills, may have other requirements, so check if you're unsure.
Do the people I send a document to need an account?
No. They get an email with a private link, open the document and sign it in their browser.
Is signing free?
Signing a PDF yourself is free. Sending documents for others to sign is included in the free trial and in the Basic and Pro plans.
What's in the audit trail?
Who signed, when, from which IP address, and a SHA-256 fingerprint of the document before and after signing, so any later change can be spotted.