Open Signer: Sign PDF Offline

Sign a PDF in seconds, right on your phone. Open Signer works offline: your documents never leave your device. No account, no ads, no tracking.

SIGN THE WAY YOU WANT
• Draw your signature with your finger, or type your name in a handwriting style (Latin or Arabic Ruqaa).
• Add the date: numbers, written out in your language, or Hijri.
• Add your company stamp, initials, text, or your name and email.
• Save your signatures and stamps once and reuse them, offline.

SIMPLE
• Open a PDF from your files, or share it to Open Signer from WhatsApp, email or any app.
• Place, move and resize, then tap Finish. The signed PDF is saved in your Documents, ready to share.
• Your unfinished work is kept if the app closes, so you can continue where you left off.
• Works with scanned, rotated and cropped pages.

CHECK A SIGNED FILE
• Every saved file gets a fingerprint (SHA-256). Send it in a separate message: the receiver opens Verify and gets a plain answer, Intact or Changed.
• Several people can sign one after another. Each signer is recorded, with an optional audit page.
• Sign with your own certificate (.p12/.pfx) for a standard digital signature that Adobe Acrobat can check.

PRIVATE BY DESIGN (AMANAH)
• No uploads: everything happens on your device.
• No account, no analytics, no ads.
• Open source and free, as a waqf (an endowment for public benefit).

Languages: English, Arabic, French, Spanish and Italian.

Note: Open Signer adds visual signatures and a fingerprint record. For a legally qualified electronic signature, use the certificate option with a certificate from a recognised provider.