✒️ Lemba

Focus on writing. We handle the rest.

Lemba is a modern, open-source, offline-first Markdown editor designed for writers, researchers, and power users. It combines the simplicity of Markdown with the power of professional typesetting (powered by Typst) and the flexibility of Notion-style visual editing.

Launch Online | Download for Desktop |

📖 Table of Contents

• Key Features
  • Dual-Mode Editing
  • Real-time PDF Rendering
  • Custom Templates
  • Privacy & Offline-First
  • AI Assistant
• Technology Stack
• Getting Started
  • Prerequisites
  • Local Development
  • Desktop Builds
• Roadmap
• Contributing
• License
• Contact

✨ Key Features

🛠️ Dual-Mode Editing

Switch seamlessly between a distraction-free Raw Markdown editor and a rich Visual WYSIWYG experience. No context switching, no lag—just pure flow.

• Raw Mode: Full control over syntax and frontmatter.
• Visual Mode: Focus on structure with an Obsidian/Notion-like interface.

📄 Real-time PDF Rendering (Powered by Typst)

Forget generic Markdown exports. Lemba uses a lightning-fast engine to render production-ready PDFs as you type.

• High-fidelity previews: See exactly how your document will look on paper.
• Professional Typography: Benefit from Typst's superior layout engine.

🎨 Your Documents, Your Style

Go beyond basic themes. Lemba features a powerful Template Editor.

• Custom Templates: Control every detail of typography, spacing, and layout.
• Document Variables: Reuse content throughout your document. Update a value once, and it reflects everywhere.
• Style Sharing: Export and share your style configurations.

🔒 Privacy & Offline-First

Your data stays on your device. Lemba is built to work 100% offline, ensuring total privacy and reliability.

• Local-first: Files are saved to your local file system or browser storage.
• Cloud Sync (Beta): Optional encrypted sync to keep your work available across devices.

🤖 AI Assistant (Beta)

Draft, refine, and expand your Markdown with a built-in AI agent.

• In-context edits: Get suggestions without leaving the editor.
• Smart Polish: Transform rough notes into polished professional documents instantly.

🚀 Technology Stack

Lemba is built with modern web technologies to ensure performance across web and desktop:

• Frontend: Next.js (React)
• Editor: Custom engine with Markdown support
• PDF Engine: Typst
• Desktop Wrapper: Electron
• Styling: Tailwind CSS

🛠️ Getting Started

Prerequisites

• Node.js (v18 or higher)
• npm / yarn / pnpm

Local Development

1. Clone the repository:

   git clone https://github.com/zeemarquez/lemba.git
   cd lemba

2. Install dependencies:

   npm install

   (Or use yarn or pnpm if you prefer.)

3. Start the development server:

   npm run dev

   Open http://localhost:3000 in your browser.

4. Optional — run as a desktop app: To run the Electron wrapper in development:

   npm run electron:dev