How to Sign a Word Document (3 Ways)

You have a contract or letter in Microsoft Word (.docx) and it needs a signature. There are a few ways to do it, depending on whether you're just signing for yourself or you need a legally solid, verifiable signature to send to someone else. Here are the three main options, from simplest to most robust.

Option 1: Insert a signature image

The quickest approach for personal use: sign a blank piece of paper, take a photo, and in Word go to Insert → Pictures to place the image where you want it. Resize it to fit.

This works, but it's just a picture pasted into a file — anyone can copy, move, or edit it, and there's no record of who signed or when. Fine for informal documents; not ideal for anything important.

Option 2: Use Word's signature line

Microsoft Word has a built-in signature line. Go to Insert → Signature Line, fill in the signer details, and Word adds a signature block to the document. The recipient can then double-click it to sign.

It's more formal than a pasted image, but it generally requires the other person to be working in Word too, and it doesn't give you the independent audit trail most people want when a signature really matters.

Option 3: Convert to PDF and e-sign (recommended)

For any document you're sending to someone else — contracts, agreements, offer letters — the most reliable approach is to convert the Word file to PDF and sign it with a proper e-signature tool. You get a fixed, professional layout plus a legally binding signature and a full audit trail.

Step 1: Save your Word file as PDF

In Word, go to File → Save As (or File → Export) and choose PDF as the format. PDF locks in your formatting so it looks the same on every device.

Step 2: Upload it to SignovaX

Create a free SignovaX account and upload the PDF.

Step 3: Sign it or send it

Place a signature field and sign it yourself, or add someone else's email to request their signature. Every completed document gets an audit trail and a tamper-evident SHA-256 hash embedded in the final PDF.

Why PDF is better for signing

• Formatting stays fixed — no shifting text or fonts on the recipient's device.
• The recipient doesn't need Word (or any software) to sign — just a browser.
• You get an audit trail and tamper-evidence, which a Word file can't provide on its own.

Is signing a converted PDF legal?

Yes. Signing the PDF version of your document produces a legally binding electronic signature in most countries under laws like the ESIGN Act and eIDAS. See are electronic signatures legally binding? for the details.

Disclaimer: This article is for general informational purposes only and is not legal advice. Product steps in Microsoft Word may vary slightly by version.