Learn how to sign a Word document (add a signature) to prove your identity and the authenticity of the document.
For document creation, there is no better, more popular, or feature-rich software than Microsoft Word. Whether you are writing a book, contract letters, official documents, or general notes, Word has everything you need and can do it all.
After creating a document, you can further personalize it with a digital signature. In fact, you can even add an image or picture signature in Word. As an added benefit, a signature will prove your identity and the document’s authenticity, just as it would in real life. It also discourages others from editing the file. Any changes made to the document after signing will invalidate the signature.
In this quick and easy guide, let me show you the steps to add or insert a signature to a Word document.
Steps to Sign a Word Document
There are two significant steps to sign a Word document. First, we need to create or insert a signature line in the document. Second, you or the target user can add a signature on the signature line in the document. Though it sounds complicated, it is pretty easy to do. Here is how.
- Open the Word document for which you want to add the signature.
- Place the cursor where you want to add the signature.
- Click the “Insert” tab.
- Click the “Signature line” dropdown and select the “Microsoft Office Signature Line” option.
- Fill in the following details in the “Signature Setup” dialog.
- Suggested signer: Who should sign the document?
- Suggested signer’s title: What is the title of the person signing the document?
- Signer’s email address: Enter the signer’s email address.
- Instructions for the signer: Any special instructions you’d like to tell the person signing the document.
- Select the “Show sign date in signature line” checkbox.
- Click “OK“.
- The above action adds the signature line.
- To sign it, double-click the signature line.
- Type your signature and click “Sign“.
- The above action will add your signature and click “OK“.
- That’s it. With that, you’ve signed a Word document.
Detailed Steps (With Screenshots)
First, open the Word document you want to sign. You can do that by double-clicking on the .docx file. Ensure the document is fully ready and requires no more editing or changes. Once you sign the document, you cannot edit it without invalidating the signature.
In the document, place the cursor where you want to insert the signature. In my case, I want to add it to the bottom left of the page.
Next, go to the “Insert” tab.

Click on the “Signature Line” dropdown menu and select the “Microsoft Office Signature Line” option.

The action above opens the Signature Setup dialog. Here, fill in the following fields.
- Suggested signer: Who should sign the document?
- Suggested signer’s title: What is the title of the person signing the document?
- Signer’s email address: Enter the signer’s email address.
- Instructions for the signer: Any special instructions you need to tell the person signing the document.
Select the “Show sign date in signature line” checkbox. If you want to allow the signer to add their own comments to the signature, select the “Allow the signer to add comments in the Sign dialog” checkbox.
After filling the fields, click the “OK” button to save changes in the Signature Setup window.

As soon as you click OK, the signature line is added to the document. You can sign the document yourself or send it to the user who needs to sign it.

Double-click on the signature line or right-click on it and select the “Sign” option to sign the document.
In the Sign window, type your signature in the big box. If you have your signature in image format, click on the “Select image” button, select the image, and add it.

If you want to add additional information, like full name, address, etc., to your signature, then click on the “Details” button and add those details.

Finally, click the “Sign” button.

As soon as you click the button, the document will be signed with the signature and details you provided.

The signed document is considered final from this point forward, and no edits or changes are allowed. You will even see a yellow warning bar telling you the same.

Edit a Signed Word Document
Of course, one can still edit the document, but it will invalidate and remove the signature. If you click on the “Edit Anyway” button, you will see the “Editing will remove signatures in this document. Do you want to continue?” message. Clicking “Yes” will remove the signature and allow you to edit the document.

That is all. It is that simple to add or insert a signature in the Word document. If you have any questions or need help, comment below. I’ll be happy to assist.
If you like this article, check out how to convert a PDF to an editable Word document.