Mini Diarium

An encrypted, local, cross-platform journaling app

Mini Diarium keeps your journal private. Every entry is encrypted with AES-256-GCM, the app never connects to the internet, and your data never leaves your machine. Built with Tauri, SolidJS, and Rust.

Features:

• Key file authentication: unlock your diary with an X25519 private key file instead of (or alongside) your password, like SSH keys for your journal. Register multiple key files; manage all auth methods from Preferences. See Key File Authentication for details.
• AES-256-GCM encryption: all entries are encrypted with a random master key. Each auth method holds its own wrapped copy of that key, so adding or removing a method is O(1), with no re-encryption of your entries.
• Rich text editor
• Calendar navigation
• Import: Mini Diary JSON, Day One JSON/TXT, and jrnl JSON with merge conflict resolution
• Export: JSON and Markdown formats
• Themes
• Automatic backups: backup on unlock with rotation
• Statistics
• Preferences: first day of week, future entries toggle, title visibility, spellcheck, password change, authentication method management
• Cross-platform: Windows, macOS, and Linux
• Zero network access: no telemetry, no analytics, no update checks