Paper Disk

Paper Disk is a local-first file backup and recovery tool from RetroNotes. It converts a small file into an encrypted printable A4 PDF made of QR codes, so the file can be preserved on physical paper and restored when needed. No account, cloud service, subscription, advertising, analytics, or tracking is required. CREATE PAPER DISK Choose a file up to 128KB and create a printable Paper Disk. Paper Disk encrypts the file content through Apple CryptoKit using AES-256-GCM authenticated encryption before writing the encrypted data into QR codes. Export the generated A4 PDF, then print and store the pages wherever you choose. RESTORE PAPER DISK Use the device camera to scan any compatible Paper Disk. Each page contains 9 QR codes. A page is confirmed after all 9 QR codes on that page are scanned. When all required pages are complete, Paper Disk reconstructs the encrypted archive, verifies…