Tool
Sign PDF online free (Adobe Acrobat)
Adobe · adobe.com Free Beginner
Adobe's free browser tool for adding your own signature to a PDF: no trial and no expiry, though requesting signatures from others and audit trails need a paid Acrobat plan.
- For signing a document yourself, this costs nothing.
- Sign in to save the file; otherwise Adobe deletes it after processing.
- When you need others to sign and an audit trail, move to a signing service.