VeriPatra: Verify Signed PDFs

VeriPatra checks cryptographic digital signatures embedded in PDFs and explains exactly what was verified, what remains unknown, and whether the file changed after signing. VERIFY SIGNED PDFS • Open a PDF from Files or share it into VeriPatra from WhatsApp, email or another app. • Check signature integrity, signer and certificate facts, and whether the signature covers the current document. • See a clear result—not just a green badge. VeriPatra separates verified facts, partial results, unknowns and checks that could not be completed. • Inspect certificate-chain, signing-time and PAdES/LTV details whenever the verification result contains them. Missing facts remain visibly unavailable. • Batch-check several PDFs and export a CSV summary. • Scan a printed document's QR code to fetch and check its signed original. UNDERSTAND THE RESULT • Review a Trust Passport for each document. • See “What Changed?” guidance, saved reports and a Trust Heatmap on your device. • Export a Court Evidence Bundle containing the file, hashes and the verification response. • Use situation guides for offer letters, contracts, government or court letters, property papers and other common documents. Guidance is kept separate from verification. SIGN AND MARK PDFS Add a handwritten signature, initials or a seal and place it on the page. VeriPatra clearly labels this as a visual mark—not a cryptographic digital signature—and warns before an edit could invalidate a signature already in the PDF. PROTECT A PDF Add AES-256 open-password protection and save a new copy. The file and password are sent over HTTPS only for the requested operation. The password is not stored and cannot be recovered by us. OPTIONAL SECURE VAULT Create a Vault with an ID and password you invent—no email or phone number required. Save encrypted copies of verified or protected documents. Each stored document has its own encryption key; deleting an item destroys that key. Optional biometric unlock is performed by your device. REGIONAL DOCUMENT SUPPORT Check supported Aadhaar Secure QR, GST e-invoice, PAN and DigiLocker QR formats on your device. VeriPatra also recognises relevant CCA India trust-chain information when the verification response provides it. These regional workflows complement the global PDF signature checker; they do not limit it. PRIVATE BY DESIGN Core verification, signing and protection features need no account. Files are processed for the requested operation and discarded unless you explicitly save an encrypted copy to your Vault. Reports and trust history stay on your device. No compulsory login. No ads. No analytics. No advertising identifiers. No tracking SDKs. No per-file fee. VeriPatra provides technical guidance, not legal advice, notarisation or a guarantee that a document's contents are true or legally valid. Available in English and Hindi.