How to add an HTML signature in Gmail

Gmail only accepts a pasted signature from the desktop site, not from the phone app’s full HTML editor.

1. In Signoff Kit, click Copy HTML.
2. Open Gmail in a browser. Click the gear, then See all settings.
3. Under the General tab, find Signature and create one.
4. Click inside the signature box and paste. You should see the formatted name, not the raw HTML. If you see tags, use Ctrl+V / Cmd+V in the box itself, not in a plain-text field.
5. Scroll down and save changes.

Gmail may rewrite some CSS. This layout uses a simple table and inline styles, which mail apps keep more faithfully than modern CSS. Images you attach later should be hosted or uploaded in Gmail; a PNG download is for apps that want a picture rather than HTML.

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