How to Sign Documents on Mac: A Step-by-Step Guide

In today’s digital age, signing documents electronically has become increasingly common and convenient. With the rise of remote work and online transactions, being able to sign documents on your Mac can save you time and hassle. In this article, we will guide you through the process of signing documents on your Mac using built-in tools like Preview.

Step 1: Open the Document in Preview

The first step is to open the document that you need to sign in Preview. You can do this by right-clicking on the document file and selecting “Open With” > “Preview”. Alternatively, you can open Preview and then go to “File” > “Open” to select the document from your files.

Step 2: Access the Markup Tools

Once the document is open in Preview, click on the Markup icon in the toolbar. It looks like a toolbox and is located next to the search bar. This will open a new toolbar with various markup tools that you can use to annotate and sign the document.

Step 3: Add Your Signature

To add your signature, click on the Signature icon in the markup toolbar. If you haven’t already set up your signature in Preview, you can do so by clicking on “Create Signature”. You will be prompted to sign your name on a piece of paper and hold it up to your Mac’s camera for it to capture your signature.

Step 4: Place Your Signature

After creating your signature, you can now place it in the document. Click on the Signature icon again and select your saved signature. You can then click and drag to place it wherever you need it in the document. You can also resize or reposition your signature as needed.

Step 5: Save Your Signed Document

Once you have added your signature to the document, make sure to save your changes. Go to “File” > “Save” or “File” > “Save As” if you want to save a copy of the signed document under a different name or location.


Signing documents on your Mac using Preview is a simple and efficient process that can save you time and streamline your workflow. Whether you’re signing contracts, agreements, or any other type of document, being able to do so digitally can be incredibly convenient. By following these steps, you can easily add your signature to any document without having to print it out and scan it back in.