fil/docs/index.md

---
description: "Kreuzberg – Extract text, tables, and metadata from 90+ file formats with a Rust core and native bindings for 17 languages. No GPU required."
---

# Kreuzberg

Document intelligence with a Rust core and native bindings for 17 languages. Extract text, tables, and metadata from 90+ formats with optional OCR — usable as an SDK, CLI, REST API, MCP server, or Docker image.

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[:material-play-circle: Live Demo](demo.html){ .md-button .md-button--primary }
[:material-lightning-bolt: Quick Start](getting-started/quickstart.md){ .md-button }
[:material-package-variant: Installation](getting-started/installation.md){ .md-button }
[:fontawesome-brands-discord: Join our Community](https://discord.gg/xt9WY3GnKR){ .md-button }

</div>

---

## Why Kreuzberg

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- :material-flash:{ .lg .middle } **High Performance**

  Rust core with native PDFium, SIMD optimizations, and full parallelism. Process thousands of documents per minute without a GPU.

- :material-file-document-multiple:{ .lg .middle } **90+ File Formats**

  PDF, DOCX, XLSX, PPTX, images, HTML, XML, emails, archives, academic formats — one API handles them all.

- :material-eye:{ .lg .middle } **Multi-Engine OCR**

  Tesseract and PaddleOCR work across all language bindings. EasyOCR is available for Python only.

- :material-translate:{ .lg .middle } **16 Language Bindings**

  Native bindings for Python, TypeScript, Rust, Go, Java, Kotlin, C#, Ruby, PHP, Elixir, R, Dart, Swift, Zig, C, and WebAssembly.

- :material-code-tags:{ .lg .middle } **Code Intelligence**

  Extract functions, classes, imports, symbols, and docstrings from 300+ programming languages. Results in the **code_intelligence** field with semantic chunking.

- :material-puzzle:{ .lg .middle } **Plugin System**

  Register custom extractors, OCR backends, post-processors, and validators. Plugin authoring is primarily supported in Python; all bindings can consume registered plugins.

- :material-server:{ .lg .middle } **Flexible Deployment**

  Use as a library, CLI tool, REST API server, MCP server, or Docker container. Pick what fits your stack.

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→ **[See all features](features.md)**

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## Language Support

| Language                | Package                                        | Docs                                         |
| :---------------------- | :--------------------------------------------- | :------------------------------------------- |
| **Python**              | `pip install kreuzberg`                        | [API Reference](reference/api-python.md)     |
| **TypeScript (Native)** | `npm install @kreuzberg/node`                  | [API Reference](reference/api-typescript.md) |
| **TypeScript (WASM)**   | `npm install @kreuzberg/wasm`                  | [API Reference](reference/api-wasm.md)       |
| **Rust**                | `cargo add kreuzberg`                          | [API Reference](reference/api-rust.md)       |
| **Go**                  | `go get github.com/kreuzberg-dev/kreuzberg/v5` | [API Reference](reference/api-go.md)         |
| **Java**                | Maven Central `dev.kreuzberg:kreuzberg`        | [API Reference](reference/api-java.md)       |
| **Kotlin**              | Maven Central `dev.kreuzberg:kreuzberg-kotlin` | [API Reference](reference/api-kotlin.md)     |
| **C#**                  | `dotnet add package Kreuzberg`                 | [API Reference](reference/api-csharp.md)     |
| **Ruby**                | `gem install kreuzberg`                        | [API Reference](reference/api-ruby.md)       |
| **PHP**                 | `composer require kreuzberg/kreuzberg`         | [API Reference](reference/api-php.md)        |
| **Elixir**              | `{:kreuzberg, "~> 5.0.0-rc.1"}`                | [API Reference](reference/api-elixir.md)     |
| **R**                   | r-universe `kreuzberg`                         | [API Reference](reference/api-r.md)          |
| **Dart / Flutter**      | `dart pub add kreuzberg`                       | [API Reference](reference/api-dart.md)       |
| **Swift**               | Swift Package Manager                          | [API Reference](reference/api-swift.md)      |
| **Zig**                 | `zig fetch --save` from GitHub                 | [API Reference](reference/api-zig.md)        |
| **C (FFI)**             | Shared library + header                        | [API Reference](reference/api-c.md)          |
| **CLI**                 | `brew install kreuzberg-dev/tap/kreuzberg`     | [CLI Guide](cli/usage.md)                    |
| **Docker**              | `ghcr.io/kreuzberg-dev/kreuzberg`              | [Docker Guide](guides/docker.md)             |

!!! Tip "Choosing Between TypeScript Packages"

    **`@kreuzberg/node`** — Use for Node.js servers and CLI tools. Native performance (100% speed).

    **`@kreuzberg/wasm`** — Use for browsers, Cloudflare Workers, Deno, Bun, and serverless environments (60-80% speed, cross-platform).

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## Explore the Docs

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- :material-rocket-launch:{ .lg .middle } **Getting Started**

  Install Kreuzberg and extract your first document in minutes.

  [:octicons-arrow-right-24: Quick Start](getting-started/quickstart.md)

- :material-book-open-variant:{ .lg .middle } **Guides**

  Configuration, OCR setup, Docker deployment, plugins, and more.

  [:octicons-arrow-right-24: All Guides](guides/extraction.md)

- :material-puzzle-outline:{ .lg .middle } **Concepts**

  Architecture, extraction pipeline, MIME detection, and performance.

  [:octicons-arrow-right-24: Architecture](concepts/architecture.md)

- :material-api:{ .lg .middle } **API Reference**

  Complete API docs for every language binding, types, and errors.

  [:octicons-arrow-right-24: References](reference/api-python.md)

- :material-console:{ .lg .middle } **CLI & Servers**

  Command-line tool, REST API server, and MCP server for AI agents.

  [:octicons-arrow-right-24: CLI Usage](cli/usage.md)

- :material-swap-horizontal:{ .lg .middle } **Migration**

  Migrate from Unstructured or other document extraction libraries.

  [:octicons-arrow-right-24: Migration Guides](migration/from-unstructured.md)

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## Getting Help

- **Bugs & feature requests** — [Open an issue on GitHub](https://github.com/kreuzberg-dev/kreuzberg/issues)
- **Community chat** — [Join the Discord](https://discord.gg/xt9WY3GnKR)
- **Contributing** — [Read the contributor guide](contributing.md)