TextLock — Inline Encryptor for Docs, Notion & Web

Zero-knowledge AES-256 inline text encryption for online documents, notes, and web text.

TextLock provides serverless, zero-knowledge AES-256-GCM encryption directly inside your browser. Keep 99% of your working document open, searchable, and collaborative while locking sensitive lines, passwords, API tokens, and private notes in place. ✨ KEY FEATURES: • Line-by-Line AES-256 Encryption: Highlight any word, bullet point, or paragraph and lock it in place as an encrypted block without encrypting the entire document. • Zero-Trace Peek & Compose Mode: View decrypted text in a temporary in-memory card (Alt+V / Option+V). Plaintext is held strictly in volatile RAM and is never written to document version history. • Ephemeral Session Security: Your session password is kept exclusively in temporary browser memory (chrome.storage.session) and is automatically wiped the moment your browser closes. • 100% In-Browser Cryptography: Powered by the native Web Crypto API with PBKDF2-SHA256 key derivation (100,000 iterations, random 16-byte salt, and 12-byte IV per block). No data, passwords, or telemetry ever leave your computer. • 3 Effortless Ways to Use: 1. Instant keyboard shortcuts (Alt+E to encrypt, Alt+D to decrypt, Alt+V to peek) 2. One-click extension toolbar popup 3. Right-click context menu 🔒 ZERO-KNOWLEDGE ARCHITECTURE: TextLock has no user accounts, no tracking pixels, and no remote key servers. All cryptographic operations run locally on your device.