Sign

Sign a PDF in a minute, and show it was you.

Engagement letters, contracts, approvals. Draw or type your signature and place it on the page. When it matters, sign with a digital ID: it records who signed and shows if anyone changes the file afterwards.
IllustrationEngagement-letter.pdf
A-01.1What it doesFree

What it does.

Draw it or type it (Free)
Draw your signature once, or type your name in a script font. Choose whether it shows your name, the date, a reason or a location.
Your signatures, saved (Free)
My signatures keeps the ones you use, so you don't redraw it for every document.
Sign with a digital ID (Office and Pro)
A digital signature records who signed and whether the file has changed since. No ID yet? Redpen offers to create one.
Lock it when you're done
Choose how much to lock. A locked file opens read-only afterwards, so the signature stays valid.
A-01.2How it goes

Signing a PDF.

  1. 01
    Open the document

    Drag in the PDF and find the signature line.

  2. 02
    Place your signature

    Press X for the Sign tool and click where it goes.

  3. 03
    Sign and save

    For a digital signature, choose Sign and lock with digital ID, then Sign and save. Redpen saves a new signed copy.

A-01.3Also

More about signing.

  • Drawn and typed signatures are free
  • Send for signature with DocuSign, using your own DocuSign account
  • Saves a new signed copy and leaves the original alone
  • Your files stay on your computer
A-01.4Limits

What it does not do.

  • A drawn or typed signature is a picture of your signature on the page. It doesn't record who signed or whether the file changed.
  • Some organisations only accept digital IDs from certain providers. Check what yours asks for.
  • DocuSign needs your own DocuSign account.
A-01.5Questions

Sign PDFs: short answers.

What's the difference between a signature and a digital signature?
A drawn or typed signature is a picture of your signature on the page. A digital signature also uses a digital ID to record who signed and to show whether the file changed after signing.
Do I need to buy a digital ID?
No. If you don't have one, Redpen offers to create one when you sign. Some organisations only accept IDs from certain providers, so check what yours asks for.
Is signing free?
Drawing or typing your signature and placing it on a PDF is free. Signing with a digital ID is part of Office and Pro.

Come on in. The viewer is free.

Download Redpen and open your first PDF in a minute. The free app needs no account. Every new account can try Office or Pro free for 14 days, no card.

Windows & Mac · No credit card · Your files stay on your computer