Word is where most contracts, letters and forms start. Sooner or later one needs a signature, yours or someone else's. Word can show a signature in a few ways, but a Word file is easy to edit, which matters when the signature has to prove something. This guide covers the three ways to add one inside Word, and when it is better to turn the document into a PDF first.
Option 1: Insert an image of your signature
This is the most common method, and it works in Word on Windows, Mac and the web.
First, make the image (once).
- Sign a sheet of white paper with a dark pen, photograph it in good light, and crop it close.
- Or draw it on screen with a free signature generator, which saves a transparent PNG, so no white box shows around it.
Then add it to the document.
- Click where the signature should go.
- Choose Insert, then Pictures, and pick your signature file.
- Resize it from a corner so it keeps its shape.
- Under Wrap Text, choose In Front of Text so you can drag it onto the signature line without pushing other text around.
Tip: on Windows, Word can save the picture together with your typed name and title as an AutoText entry, so next time you insert the whole signature block in one step.
Option 2: Draw your signature in Word
If you have a touchscreen, a pen or a trackpad you are comfortable with, Word's Draw tab lets you write directly on the page.
- Open the Draw tab and choose a pen.
- Sign where the signature should go.
- Switch back to selecting so you do not keep drawing.
It looks natural, but drawn ink is easy to nudge out of place, and a signature drawn with a mouse rarely looks like yours. For a one-off note it is fine; for a contract it is the weakest option here.
Option 3: A signature line (Word on Windows)
Word for Windows has a Signature Line command (Insert, then Signature Line) that adds a line with the signer's name and title beneath it. The signer can double-click it to sign. Word ties this to a digital signature, which needs a digital ID (a certificate), and many people do not have one.
It is useful inside organisations that issue digital IDs to staff. For signatures from clients or the public, the other options are simpler.
The problem with signing inside Word
All three options leave you with an editable file. Anyone who receives it can move the signature, copy the image into another document, or change a clause above it, and nothing in the file shows that happened. Word also looks different on different computers: fonts change, lines shift, and a signature that sat on the line can end up in the margin.
That is fine for a covering letter. It is not fine for an agreement you may need to rely on. For those, two changes make a big difference:
- Convert to PDF. The layout is fixed and looks the same everywhere.
- Sign through an e-signature service. It records who signed, when and from where, and seals the final file so changes are detectable.
How to convert Word to PDF
- Word on Windows or Mac: File, then Save As (or Export), and choose PDF.
- Word on the web: File, then Download, then Download as PDF.
- Google Docs: File, then Download, then PDF document.
Check the PDF once before sending: page breaks and tables sometimes move.
Then sign or send the PDF
- To sign it yourself: use the free Sign PDF tool in your browser. Draw or type your signature, place it, and download. The file stays on your device.
- To get someone else's signature: send it with an e-signature service. In Salsox, upload the PDF in Quick Send, enter the signer's email, and send. They sign from a link on any device, and you both receive the signed PDF with its audit trail. Salsox accepts PDFs, not Word files, so the conversion above comes first.
Our complete guide to signing a PDF compares the free ways to sign, and what is an electronic signature? explains why a recorded e-signature is stronger evidence than an image in a file.
Which method should you use?
| You need | Use |
|---|---|
| A signature on a letter you are sending | An inserted signature image |
| A quick personal note | Word's Draw tab |
| An internal sign-off where staff have digital IDs | Word's Signature Line (Windows) |
| An agreement with a client, tenant or employee | Convert to PDF and send for e-signature |
Get documents signed properly
You can create a free Salsox account and send 3 documents a month for signature, or see the paid plans on the pricing page.
Frequently asked questions
How do I insert my signature into a Word document?
Save a picture of your signature as a PNG with a transparent background, then in Word choose Insert, Pictures, pick the file, and set the picture's text wrapping to In Front of Text so you can place it on the line.
Can I sign a Word document without printing it?
Yes: insert a signature image, draw one with Word's Draw tools, or convert the document to PDF and sign or send it with an e-signature tool. None needs a printer.
Is a signature image in Word legally binding?
It can be, since the law accepts electronic signatures in most countries, but an image in an editable file is weak evidence: anyone can copy it or change the text around it. For agreements, sign a PDF through a service that records who signed and when.
How do I get someone else to sign my Word document?
Export it to PDF and send it through an e-signature service. The other person signs from a link, and you both get the same signed copy with a record of the signing.