Received a document in need of your initials or signature? Just open the “Preview” app.

Preview is one of the most underrated Mac apps of all time. The app can add your signature to any document.

Nicole Nguyen / BuzzFeed

Nicole Nguyen / BuzzFeed
Here’s how it’s done: Open Preview and click on Tools in the menu bar > Annotate >Manage signatures > Create signature. You’ll then be prompted to sign using your trackpad or by holding up your signature on a white paper to your laptop’s camera. When you’re finished, click Done.
Next, open your document in Preview. Then go to Tools > Annotate > select the signature you want to use. You can then drag and drop the signature to anywhere on the document.