How Do I Sign a PDF Document? (Simple, Free Guide)

TL;DR

You don't need to print, scan, or mail anything.

To sign a PDF, just open it in a PDF editor (like Adobe Acrobat or SignWith), add your signature, and save. Done.

Here's how to do it, step-by-step.

Ever opened a PDF and thought, "how the hell do I sign a pdf?"

Maybe it's a contract. Or a freelance invoice. Or one of those annoying HR forms with 10 fields and no clue where to start.

You click around. No pen tool. No "Sign" button.

Now what?

Relax. This post is going to walk you through 4 dead-simple ways to sign a PDF — online or on your computer. No printing. No installing random apps. Just open, sign, and send.

1. The Easiest Way: Sign Your PDF Online With SignWith

If you want the fastest way - no downloads, no credit card required - this is it.

👉 Here's how:

1. Go to SignWith.co.
2. Upload your PDF.
3. Click "Add Signature" → Draw or type your name.
4. Place it anywhere on the document.
5. Hit "Finish & Download."

Done. You've signed a PDF in under 60 seconds.

Why it's great:

• Works on mobile + desktop
• No credit card required
• Completely free to use
• Legally binding signature
• Built for speed - no fluff

If you're signing stuff regularly, this saves hours. It's designed to be a DocuSign alternative without the unnecessary complexity.

And if you have more documents to sign, SignWith gives you 3 documents to sign for FREE every month.

You can sign documents or request signatures using any device, including mobile devices. Recipients are not required to log in.

2. Using Adobe Acrobat (Free Version)

If you already have Adobe Acrobat Reader installed, it works too, though it's a bit more clunky.

Here's how:

1. Open the PDF in Acrobat Reader.
2. Click on "Fill & Sign" (should be in the toolbar).
3. Select "Sign" → "Add Signature."
4. You can type, draw, or upload an image of your signature.
5. Place it where you want and save the file.

Heads up: You may need to upgrade to Acrobat Pro.

Also: Adobe's own guide is here if you want to double-check steps.

3. Using Preview (If You're on a Mac)

Mac users - you've got a built-in way to sign PDFs with the Preview app. No extra software needed.

Do this:

1. Open your PDF in Preview.
2. Click the pen icon (Markup Toolbar).
3. Hit the signature icon → Create a signature with your trackpad or camera.
4. Click to insert the signature.
5. Save the file.

It's actually pretty smooth for Mac users.

Why We Built SignWith

Signing documents should be fast, not frustrating.

We got tired of paying such a heavy subscription cost every month for tools like Docusign just to sign one doc, so we built SignWith. It gives you 3 FREE documents to sign every month - and after that it's pay per document.

• No feature bloat
• No hidden cost
• No upsells
• Just upload → sign → download

If you want to dig deeper, here are some helpful reads:

• Digital Signature vs Electronic Signature
• How to eSign a Document (Full Guide)

FAQs: How Do I Sign a PDF Document?

Ready to sign your first PDF? Try SignWith.co - it's free, fast, and works on any device.

Start Signing Now