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How to Sign a PDF on Mac

A cleaner way to sign PDFs on Mac — no Preview quirks, no Acrobat.

Quick steps

  1. Open Sign PDF. Go to pdfoncall.com/sign.
  2. Add your PDF. Drop the file in.
  3. Draw or type a signature. Use your trackpad, or type in a signature font.
  4. Place and download. Position the signature, save, done.

Why not Preview?

Preview signatures often shift when the PDF is re-opened elsewhere, and multi-signature docs get messy. A dedicated tool keeps the signature locked to the page.

Multiple signatures

Add multiple signature blocks to the same PDF — great for contracts with two or more signers.

Ready to try it?

Free — 3 tasks a day, no card required. Upgrade any time.