The World's Most Private PDF Signer.
Secure your documents with hardware-backed digital fingerprints. No cloud. No tracking. 100% Offline.
Zero Permissions. Total Control.
Silicon Trust beats Cloud Trust.
⚡ 100% Offline. Forever.
Existing apps "rent" you trust from their servers. If they stop, your signatures die. SelfAttest is powered by your phone's silicon—it works without internet and keys never expire.
🛡️ Zero Permissions. Period.
We don't ask for your camera, your contacts, or your location. SelfAttest is the only signer designed to function with zero system permissions, eliminating any chance of data leaks.
💎 Google Root Authority
Your identity is bridged directly to the Google Root CA through hardware attestation hooks. It's the highest level of cryptographic proof available on consumer mobile devices.
Hardware-Bound Artifact
Signed by: test user
Digital ID: 3D5D-C560-8410-C042
Location: sdk_gphone64_x86_64
Reason: Self-Attested by test user (2025.12.28 04:51:48 GMT)
This block is embedded directly into your PDF. Click Verify Sign to test the demo.
Select Document
Choose any PDF from your device storage. The application processes everything locally, never uploading your files to any server.
Share SelfAttest with your team. Pro Tip: Download the Poster and paste the Invitation Text as your status caption on WhatsApp or Instagram!