🌉 Kreuzberg

The fastest Document Intelligence engine for RAG Developers: Open-Source and Cloud

Kreuzberg is a polyglot document intelligence framework with a fast Rust core. We build tools that help developers extract, process, and understand documents at scale, from PDFs to Office files, images, archives, emails, in 50+ formats.

We're setting out to make high-performance document intelligence faster, cheaper, and more ecological.

What is Kreuzberg

1. Kreuzberg (Open Source MIT Licensed)

A polyglot document intelligence engine

• ✓ Rust core
• ✓ Bindings for Python, TypeScript/Node.js, Ruby, Go, Java, C#, PHP, Elixir
• ✓ OCR with table extraction
• ✓ Streaming parsers for multi-GB files
• ✓ Built-in chunking + embeddings for RAG
• ✓ CLI, REST API, Docker, MCP server
• Read More here: https://kreuzberg.dev/

2. Kreuzberg Cloud (Coming Soon)

A fully managed document intelligence API. Same engine, zero setup.

Planned features:

• Hosted REST API
• Async jobs + webhooks
• Built-in chunking for RAG pipelines
• Premium OCR backends
• Usage dashboard & analytics
• Simple pay-as-you-go pricing

3. html-to-markdown library

High-performance HTML → Markdown conversion powered by Rust. Shipping as a Rust crate, Python package, PHP extension, Ruby gem, Elixir Rustler NIF, Node.js bindings, WebAssembly, and standalone CLI with identical rendering behaviour.

Why Devs Choose Kreuzberg

• Truly polyglot — Python, Rust, JS, Ruby, Go, Java, C#, PHP, Elixir.
• High throughput — Optimized for batch workloads and multi-GB documents.
• Memory efficient — Streaming architecture keeps RAM usage constant.
• Flexible deployment — Use as library, CLI, Docker image, or REST API.
• MIT license — Safe for enterprise, commercial use, and closed-source products.
• Built for RAG — Native chunking + embeddings with full customization.

🌍 Community

Join our dev community, ask questions, and share what you’re building.

• Discord link https://discord.gg/xzx4KkAPED
• Subreddit https://www.reddit.com/r/kreuzberg_dev/
• Linkedin https://www.linkedin.com/company/kreuzberg-dev/
• X/Twitter → https://x.com/kreuzberg_dev

🔧 Contribution Guide

Contributions are welcome! We follow a simple workflow:

1. Open an issue to propose changes
2. Submit a PR
3. Maintainers review and merge

Please see CONTRIBUTING.md in the respective repos for detailed guidelines. Kreuzberg.dev repo https://github.com/kreuzberg-dev/kreuzberg

📜 License

All open-source code is MIT licensed. It’s permissive, enterprise-safe, and commercial-friendly.

❤️ Maintainers

Built with love in the heart of the creative and gritty district of Kreuzberg, Berlin