Sign PDF

Add a signature to a PDF without sending it away.

Use Slay PDF to place a visual signature, add text, highlight sections, draw rectangles and export the signed PDF from your browser.

Visual signatures

Add a signature overlay to the page and position it where it belongs.

Form-friendly

Fill supported AcroForm fields and optionally flatten fields on export.

Private files

Documents and edits stay in local browser storage. Passwords are never saved.

For signatures, initials and quick approval marks.

Slay PDF is useful when you need a visible signature or annotation on a PDF but do not want to create an account or upload the file to a third-party signing site.

It is not a digital certificate authority. Use a dedicated e-signature platform if your workflow requires legal identity verification, audit trails or certificate-backed signatures.