How to Sign a PDF Without Printing It (Windows and Mac)

Printing a document just to sign it and scan it back in is one of those tasks that wastes five minutes every time. There are several better ways to sign a PDF depending on what software you already have — most don’t require installing anything new.

Method 1: Adobe Acrobat Reader (Free)

Adobe Acrobat Reader is free and the most widely used PDF tool. It includes a built-in signature feature that works well for most needs.

1. Open your PDF in Adobe Acrobat Reader
2. Click Sign in the right-hand toolbar (or go to Tools → Fill & Sign)
3. Click Sign yourself then Add Signature
4. Choose to type your name, draw your signature with a mouse/trackpad, or upload an image of your handwritten signature
5. Place the signature on the document and save

The result is a signed PDF that can be emailed directly — no printing, no scanning. This method works on Windows and Mac.

Method 2: Microsoft Edge (Built Into Windows 11)

If you’re on Windows 11, you already have a surprisingly capable PDF tool in Microsoft Edge. You don’t need to install anything.

1. Right-click your PDF and open with Microsoft Edge
2. Click the Draw tool in the top toolbar
3. Sign or annotate directly on the document
4. Click the Save icon to save the signed copy

Edge’s drawing tool is basic — it’s free-form drawing, not a proper signature field — but it works well for a quick sign-and-send.

Method 3: Preview on Mac

Mac users have the easiest option built right in. Preview (the default PDF viewer on macOS) has a native signature tool that captures your signature using your webcam or trackpad.

1. Open the PDF in Preview
2. Click the Markup toolbar icon (the pencil tip)
3. Click the Signature button
4. Create a signature using your trackpad, camera, or iPhone/iPad (via Continuity)
5. Place and resize the signature on the document
6. Save with File → Export as PDF

The camera method is particularly good — you sign on white paper, hold it up to your webcam, and Preview captures it cleanly.

Method 4: Online Tools (for One-Off Use)

For a quick one-off signature without installing any software, several free web tools work well:

• Smallpdf.com — upload, sign, download. Clean and simple.
• ilovepdf.com — similar functionality, free tier is generous
• DocuSign (free tier) — good for more formal agreements where you need a tracked signature

Note: for confidential documents, consider whether uploading to a third-party website is appropriate. For anything sensitive, use a local method (Acrobat, Edge, or Preview).

Method 5: Microsoft 365 (for Business Use)

If your business uses Microsoft 365, you have access to Microsoft Word’s PDF sign and fill feature, and you can integrate with Adobe Sign or DocuSign directly from Outlook and Teams. These are worth using if you send contracts or agreements regularly — they provide a legally tracked audit trail of who signed what and when.

Creating a Reusable Signature Image

Whatever method you use most often, it’s worth creating a clean PNG of your signature once and saving it somewhere handy. Sign your name on white paper with a black pen, photograph it well-lit, and use a free background remover (remove.bg is good) to make the background transparent. You can then insert this into any PDF tool as an image, rather than redrawing every time.

What About Legally Binding Signatures?

For most business documents — approvals, internal sign-offs, supplier agreements — a typed or drawn PDF signature is legally valid in the UK. For high-stakes contracts (property, major financial agreements), a dedicated e-signature service like DocuSign or Adobe Sign provides a stronger audit trail and should be used instead.

Related Guides

• Microsoft 365 vs Google Workspace — Which Is Right for Your Business?
• Microsoft 365 for Small Business UK — Is It Worth It?