Just like how you add inked signatures on a hard-paper document, you can also add an electronic signature to your PDF document in the Edge browser.

Quick tip: You can also sign a PDF document on any device, without the need for a printer or scanner. Here's how to type on a PDF, whether you're using a Mac, PC, mobile device, or Microsoft Word.

Full-fledged editors like PDFgear, PDF-Xchange, and Adobe Acrobat Pro also have it, of course, but so does the built-in PDF reader in Microsoft Edge.