"Add a signature" means something slightly different depending on where you're doing it - an email signature is a block of text and contact info that appears automatically on outgoing messages, while a document signature is usually an actual signed mark on a specific file. Here's the quick version of each.

Email signature in Gmail

Settings → See all settings → General tab → scroll to Signature → create a new one with your name, title, and contact details, then save. It'll attach automatically to new emails and replies going forward (you can toggle this off per-setting if you'd rather add it manually sometimes).

Email signature in Outlook

File → Options → Mail → Signatures, where you can create one or more signatures and choose which one applies to new messages versus replies and forwards - useful if you want a shorter signature on replies than on a fresh email.

Adding a signature image in Word

Insert → Pictures, then place your signature image (a transparent PNG works best so it doesn't sit on a white box) wherever it needs to go in the document - common for signing off on a letter or contract you're sending as a Word file.

Signing a PDF without printing it

Create a signature image once, then insert it into the PDF at the signature line - this is faster than the old print-sign-scan routine and works from a phone or computer either way.

Making the actual signature

Our Signature Generator lets you draw a handwritten-style signature or type one in a cursive font, then download it as a transparent PNG ready to drop into any of the places above - Word, Gmail, Outlook, or directly onto a PDF.