Pitak

Pitak is a privacy-first, offline personal library catalogue. Catalogue your books, lend them to borrowers from an encrypted vault, keep a wishlist, import/export your data, make portable backups, and optionally publish a read-only library site. Features: * Library — add, edit, search, sort and filter books; soft-delete with restore; on-device cover capture; ISBN barcode scan with metadata lookup (Open Library → Google Books, chained and cached). * Borrowers vault — a persistent, AES-256-GCM encrypted store for borrowers and loans, unlocked by a passphrase (Argon2id key derivation). Optional biometric unlock. * Wishlist — track books to acquire; move them to the library on purchase. * Import / Export — JSON, CSV (including Goodreads import), and paginated PDF export with Indic-script support. * Backup / Restore — portable .pitabak archives. * Publish — optionally push a read-only library viewer to GitHub Pages, with PII redaction. * Library network — save other Pitak libraries and browse their published catalogues inside the app (search, filter, sort, read-only detail), with an explicit "Open in browser" fallback. * App-lock — optional biometric/device-credential gate before the library screen. Privacy posture: local-first by default. Sensitive data lives in the platform Keystore; secrets are held as wipeable bytes. Network calls happen only on explicit user action (ISBN lookup, publish, Refresh, opening a saved library, opt-in remote covers). A catalogue you open is not stored on your device, and its cover images load only while you view it and only if the remote-cover switch is on. Screenshots are blocked while sensitive data is visible. The cryptographic core is written in Rust and built entirely from source.

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