Authenticator

A modern TOTP authenticator desktop app built with Tauri v2, Svelte 5, and Rust. Designed with Material Design 3 Expressive guidelines.

Features

• TOTP code generation — RFC 6238 compliant (HMAC-SHA1, 6-digit, 30s period)
• 20+ brand icons — Snapchat, Google, GitHub, Discord, Facebook, Instagram, and more (Simple Icons, MIT)
• Quick paste — paste name:password:secret to auto-fill all fields
• Bulk import — import multiple accounts from a .txt file (one per line)
• Drag-and-drop — drop a .txt file onto the app to import accounts
• Edit accounts — change issuer, name, or secret key after adding
• Issuer picker — tap brand chips or avatar to quickly assign/change issuer
• Filter and search — filter by issuer chips, search by name or issuer
• Copy to clipboard — click any account row to copy the current code
• Custom titlebar — drag to move, double-click to maximize, native window controls
• Settings — version info, account count, data location, change storage path, check for updates
• Fully offline — Roboto Flex + Material Symbols fonts bundled locally
• M3 Expressive design — dark theme, proper color tokens, motion springs, accessibility

Tech Stack

Layer	Technology
Backend	Rust + Tauri v2
Frontend	Svelte 5 (runes) + SvelteKit
Styling	Tailwind CSS v4 + M3 design tokens
Fonts	Roboto Flex (variable) + Material Symbols Outlined
Icons	Simple Icons (simpleicons.org)
Linting	ESLint + Prettier

Getting Started

Prerequisites

• Node.js (v20+)
• Rust (latest stable)
• Tauri prerequisites

Development

# Install dependencies
npm install

# Run in development mode
npm run tauri dev

# Or on Windows, double-click:
dev.bat

Build for production

npm run tauri build

The installer will be in src-tauri/target/release/bundle/.

Account Format

Single account (quick paste)

username:password:SECRETKEY

Bulk import file (.txt)

Alice:pass123:JBSWY3DPEHPK3PXP
Bob:pass456:KRMVATZTJFZUC4BY
Charlie:pass789:GEZDGNBVGY3TQOJQ

The password field is ignored — only the name and base32 secret are used.

Data Storage

Accounts are stored in a local JSON file:

• Windows: %APPDATA%/com.mjau.authenticator/accounts.json
• macOS: ~/Library/Application Support/com.mjau.authenticator/accounts.json
• Linux: ~/.config/com.mjau.authenticator/accounts.json

You can change the storage location in Settings.

License

MIT

Credits

• Tauri — desktop app framework
• Svelte — UI framework
• Simple Icons — brand SVG icons (MIT license)
• Material Design 3 — design system
• Roboto Flex — variable font