Fog — File Offline Guardian

Secure local file encryption up to 2 GB. No servers, no trackers. Your data stays yours.

Fog is a simple, reliable and anonymous tool for file encryption that works entirely on your device. Features: • Encryption of any files up to 2 GB using AES-256-GCM • Creation of self-decrypting .fog.html files up to 350 MB • Optional file name hiding for maximum privacy • Smart compression for text files (saves up to 90% space) • Virtual keyboard for secure password entry • Password strength indicator • Support for 5 languages: Russian, English, Spanish, Portuguese, German Privacy: • No servers — all operations are performed locally • No trackers, analytics, or hidden requests • No data collection or transmission • Your password never leaves your device Perfect for Work and Business: Fog is a reliable tool for remote work, freelancing, and corporate tasks. Protect confidential documents, contracts, financial reports, and personal data before sharing them with colleagues, clients, or partners via email, cloud storage, or any messenger (Telegram, WhatsApp, Signal). Your data remains under your complete control. Fog uses the industry-standard PBKDF2 with 310,000 iterations for key derivation and AES-256-GCM for encryption. Each file receives unique random parameters and a masking padding that conceals the exact size, ensuring maximum protection for your data. Mobile support: Full functionality on smartphones via browsers that support extensions. Adaptive limits for stable device performance. Limits: 500 MB (.fog), 300 MB (.fog.html) — depending on the technical specifications of your device. The maximum file size for encryption and decryption depends on your device's characteristics.