LibreUtils

Privacy-first web tools that run entirely in your browser

No server uploads · No tracking · No ads · Open Source (AGPL-3.0)

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Features

• 100% Client-Side: All processing happens in your browser. Your data never leaves your device.
• Minimal Dependencies: Built with Bun, TypeScript, and Web Components.
• Offline Support: Installable as a PWA for offline use.
• Modular Architecture: Each tool is an independent package that can be developed and used standalone.

Available Tools

Tool	Description	Status
Text Encoder	Encode/decode text (Base64, URL, HTML entities, etc.)	Ready
Password Generator	Secure, unique, and memorable password generation	Ready
Encryptor / Decryptor	AES-GCM and ChaCha20 encryption for text and files	Ready
Checksum Generator	Generate and verify file hashes (MD5, SHA-1/256/384/512, BLAKE3)	Ready
Metadata Scrubber	Remove sensitive metadata from files (PDFs, images, videos, audio) before sharing	Ready

Quick Start

Prerequisites

• Bun v1.0 or higher

Installation

git clone https://github.com/FumingPower3925/libreutils.git
cd libreutils
bun install

Development

# Run the full website
bun run dev

# Run a specific tool standalone
cd tools/text-encoder
bun run dev

Development server: http://localhost:3000 (main site) or http://localhost:3001 (standalone tool).

Production Build

bun run build

Project Structure

libreutils/
├── src/                   # Main website
│   ├── pages/             # Page components
│   ├── index.html         # HTML template
│   ├── index.ts           # Entry point
│   └── dev.ts             # Development server
├── shared/                # Shared code
│   └── src/
│       ├── components/    # Web Components
│       ├── styles/        # CSS design system
│       └── utils/         # Utilities
├── tools/                 # Individual tools
│   └── text-encoder/      # Example tool
├── public/                # Static assets
└── package.json           # Workspace configuration

Adding a New Tool

1. Create tools/my-tool/ with package.json, tsconfig.json
2. Add files: meta.ts, tool.ts (logic), page.ts (UI), standalone.ts, dev.ts
3. Register in src/pages/home.ts
4. Run bun install and test with cd tools/my-tool && bun run dev

See tools/text-encoder/ for the template.

Design System

The shared package provides CSS variables, typography, spacing, and component styles. All components use CSS custom properties for theming and dark mode support.

Web Components

• <lu-layout> - Page layout with header/footer slots
• <lu-header> - Site header with navigation and theme toggle
• <lu-footer> - Site footer
• <lu-card> - Tool card
• <lu-copy-to-clipboard> - Copy button with visual feedback
• <lu-download-button> - File download with File System Access API support

Privacy

• No Server Processing: All tools run 100% in your browser
• No Analytics: We don't track page views or behavior
• No Cookies: Only localStorage for theme preference
• Open Source: Auditable under AGPL-3.0

License

GNU Affero General Public License v3.0 (AGPL-3.0)

See LICENSE for details.

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Made with care for privacy.