Xberg

August 26, 2026 · View on GitHub

The fast, precise document-intelligence engine — for every language.

Point Xberg at anything — a PDF, a scanned image, a spreadsheet, an audio file, a URL, a whole archive, or a source tree — and get back clean text, tables, metadata, and structured data. One engine handles format detection, reading, OCR, and extraction, so you never stitch a pipeline together from a dozen libraries.

100 formats · 120 file extensions · 371 code languages · 15 language bindings · 6 output formats · OCR · transcription · embeddings

The fastest, most precise open-source document and PDF-to-Markdown engine — see the benchmarks.

Install · What you get · Capabilities · CLI · Docs

Xberg is the next iteration of Kreuzberg. Same document-intelligence engine, rebuilt and rebranded under a fresh v1 line.

What you get

Point Xberg at anything — a PDF, a spreadsheet, a scanned image, an audio file, a URL, an archive, a source tree — and get back clean, structured content you can use right away. One core does the format detection, reading, and extraction, so you don't assemble a pipeline yourself. Call it from Rust, Python, Node.js, Go, Java, C#, Ruby, PHP, Elixir, Dart, Swift, Zig, WASM, Kotlin, or C FFI, and run it as a library, CLI tool, REST API, or MCP server.

Capability	What you get
100 document formats	PDFs, Office, images, HTML, email, e-books, scientific publications, and structured data across 120 file extensions, with intelligent MIME detection and bounded extraction controls.
URLs & the web	Point Xberg at an `http(s)` URL — it fetches and extracts a single document, or crawls and follows links (Auto / Document / Crawl modes via the crawlberg engine). Requires the `url-ingestion` feature.
Audio & video transcription	Speech-to-text from MP3, M4A, WAV, WebM, and MP4 tracks via Whisper ONNX (tiny → large-v3). Requires the `transcription` feature.
Archives, traversed	List and recursively extract nested `.zip`, `.tar`, `.gz`, `.7z` — documents inside documents — guarded by zip-bomb, compression-ratio, and nesting-depth limits.
OCR on demand	Tesseract, PaddleOCR, Candle, or VLM backends — fallback chains, confidence scores, language auto-detection, extensible via plugins.
Layout & tables	ML layout models (PP-DocLayout-V3, RT-DETR) and table structure (TATR, SLANet) reconstruct reading order and cell grids for clean Markdown.
Code intelligence	Functions, classes, imports, symbols, docstrings from 371 programming languages. Syntax-aware chunking for RAG pipelines.
Embeddings & search	Local (ONNX) or provider-hosted embeddings (165 providers via liter-llm), sparse and late-interaction, cross-encoder reranking.
Enrichment	NER, keyword extraction (YAKE/RAKE), summarization, translation, redaction, page classification, QR detection, language detection, token reduction (TOON).
Structured extraction	Schema-driven JSON straight from any document via local (Ollama, LM Studio, vLLM) or hosted LLMs — no prompt engineering.
6 output formats	Plain text, Markdown, Djot, HTML, JSON tree, or DocTags, plus registered custom renderers.
Runs anywhere	Library, CLI (14 commands), REST API (`xberg serve`), MCP server, Docker, Helm — no GPU needed. Content-hash caching, parallel batch, per-file timeouts.

Capabilities marked requires a feature are Cargo feature flags on the core crate (url-ingestion, transcription, reranker, layout/ORT). Prebuilt language packages and the Docker image bundle the common set; a from-source build enables only what you select.

Installation

Language Packages

Python

pip install xberg

See Python README for full documentation.

Node.js / TypeScript

npm install @xberg-io/xberg

See Node.js README for full documentation.

Rust

cargo add xberg

See Rust README for full documentation.

go get github.com/xberg-io/xberg/packages/go@latest

⚠️ The repository root is not a Go module — go get github.com/xberg-io/xberg will fail. Always target the /packages/go subdirectory as shown above.

See Go README for full documentation.

Java

Available on Maven Central as io.xberg:xberg. See Java README for the dependency snippet.

dotnet add package XbergIo.Xberg

See C# README for full documentation.

Ruby

gem install xberg

See Ruby README for full documentation.

PHP

composer require xberg-io/xberg

See PHP README for full documentation.

Elixir

Add {:xberg, "~> 1.0"} to your mix.exs dependencies. See Elixir README for full documentation.

WebAssembly

npm install @xberg-io/xberg-wasm

See WebAssembly README for full documentation.

Kotlin (Android)

Available on Maven Central as io.xberg:xberg-android. See Kotlin README for the dependency snippet.

Swift

Add via Swift Package Manager. See Swift README for full documentation.

Dart / Flutter

dart pub add xberg

See Dart README for full documentation.

Zig

Add via zig fetch. See Zig README for full documentation.

C/C++ (FFI)

Build from source as part of this workspace. See C (FFI) README for full documentation.

CLI & Deployment

CLI Tool

brew install xberg-io/tap/xberg

14 commands: extract, batch, detect, formats, version, cache, tree-sitter, doctor, serve, mcp, api, embed, chunk, and completions.

See CLI usage guide for detailed documentation.

Docker

docker pull ghcr.io/xberg-io/xberg:latest

Run in API, CLI, or MCP modes. See Docker guide for examples.

REST API Server

xberg serve --host 0.0.0.0 --port 8000

One POST endpoint handles all formats. Returns JSON or Markdown. Stream large files. See API server guide.

MCP Server

xberg mcp --transport stdio

9 tools (extract, extract_batch, detect_mime_type, cache_stats, list_formats, cache_clear, get_version, cache_manifest, cache_warm). 3 prompts (extract_document, extract_with_ocr, semantic_search). 4 resources (formats, models, OCR languages, embedding presets).

Add to Claude Desktop or Cursor:

{
  "mcpServers": {
    "xberg": { "command": "xberg", "args": ["mcp"] }
  }
}

See MCP integration guide.

AI Coding Assistants

Install the Xberg plugin from xberg-io/xberg. Ships extraction APIs, OCR backends, configuration, and language conventions.

Claude Code

/plugin marketplace add xberg-io/xberg
/plugin install xberg@xberg

Codex CLI

/plugins add https://github.com/xberg-io/xberg

Search for xberg and select Install Plugin.

Cursor

Settings → Plugins → Add from URL → https://github.com/xberg-io/xberg, then select xberg.

Gemini CLI

gemini extensions install https://github.com/xberg-io/xberg

Factory Droid

droid plugin marketplace add https://github.com/xberg-io/xberg
droid plugin install xberg@xberg

GitHub Copilot CLI

copilot plugin marketplace add https://github.com/xberg-io/xberg
copilot plugin install xberg@xberg

opencode

Add to opencode.json:

{
  "$schema": "https://opencode.ai/config.json",
  "plugin": ["@xberg-io/opencode-xberg"]
}

Quick Start

Extract text from a document:

use xberg::{extract, ExtractInput, ExtractionConfig};

#[tokio::main]
async fn main() -> xberg::Result<()> {
    let config = ExtractionConfig::default();
    let output = extract(
        ExtractInput::from_uri("document.pdf"),
        &config
    ).await?;

    println!("{}", output.results[0].content);
    Ok(())
}

Common use cases — see Quick start guide for language-specific examples, OCR, batch processing, and API configuration.

Capabilities

Full feature list

Supported File Formats (100 formats · 120 file extensions)

100 formats across 120 file extensions in 8 major categories with intelligent format detection and comprehensive metadata extraction.

Office Documents

Category	Formats	Capabilities
Word Processing	`.docx`, `.docm`, `.doc`, `.dotx`, `.dotm`, `.dot`, `.odt`, `.pages`, `.wpd`, `.wp`, `.wp5`, `.wp6`	Full text, tables, images, metadata, styles
Spreadsheets	`.xlsx`, `.xlsm`, `.xlsb`, `.xls`, `.xla`, `.xlam`, `.xltm`, `.xltx`, `.xlt`, `.ods`, `.numbers`	Sheet data, formulas, cell metadata, charts
Presentations	`.pptx`, `.pptm`, `.ppt`, `.ppsx`, `.potx`, `.potm`, `.pot`, `.odp`, `.key`	Slides, speaker notes, images, metadata
PDF	`.pdf`	Text, tables, images, metadata, OCR support
eBooks	`.epub`, `.fb2`	Chapters, metadata, embedded resources
Database	`.dbf`	Table data extraction, field type support
Hangul	`.hwp`, `.hwpx`	Korean document format, text extraction

Images (OCR-Enabled)

Category	Formats	Features
Raster	`.png`, `.jpg`, `.jpeg`, `.gif`, `.webp`, `.bmp`, `.tiff`, `.tif`	OCR, table detection, EXIF metadata, dimensions, color space
Advanced	`.jp2`, `.jpx`, `.jpm`, `.mj2`, `.jbig2`, `.jb2`, `.pnm`, `.pbm`, `.pgm`, `.ppm`	OCR via pure-Rust JPEG2000 decoder, JBIG2 support, table detection
HEIC family	`.heic`, `.heics`, `.heif`, `.avif`, `.avcs`	EXIF metadata, optional pixel decoding
Vector	`.svg`	DOM parsing, embedded text, graphics metadata

Audio & Video

Category	Formats	Features
Audio	`.mp3`, `.mpga`, `.m4a`, `.wav`, `.webm`	Whisper transcription
Video audio track	`.mp4`, `.mpeg`, `.webm`	Audio-track transcription only

Web & Data

Category	Formats	Features
Markup	`.html`, `.htm`, `.xhtml`, `.xml`, `.svg`	DOM parsing, metadata (Open Graph, Twitter Card), link extraction
Structured Data	`.json`, `.yaml`, `.yml`, `.toml`, `.csv`, `.tsv`	Schema detection, nested structures, validation
Text & Markdown	`.txt`, `.md`, `.markdown`, `.djot`, `.mdx`, `.rst`, `.org`, `.rtf`	CommonMark, GFM, Djot, MDX, reStructuredText, Org Mode

Email & Archives

Category	Formats	Features
Email	`.eml`, `.msg`, `.pst`	Headers, body (HTML/plain), attachments, threading
Archives	`.zip`, `.tar`, `.tgz`, `.gz`, `.7z`	File listing, nested archives, metadata, recursive extraction

Academic & Scientific

Category	Formats	Features
Citations	`.bib`, `.ris`, `.nbib`, `.enw`	Structured parsing: RIS, PubMed/MEDLINE, EndNote XML, BibTeX/BibLaTeX
Scientific	`.tex`, `.latex`, `.typ`, `.typst`, `.jats`, `.ipynb`	LaTeX, Typst, Jupyter notebooks, PubMed JATS
Publishing	`.fb2`, `.docbook`, `.dbk`, `.docbook4`, `.docbook5`, `.opml`	FictionBook, DocBook XML, OPML outlines

Code Intelligence (371 Languages)

Extract structure from 371 programming languages via tree-sitter:

Feature	Description
Structure Extraction	Functions, classes, methods, structs, interfaces, enums
Import/Export Analysis	Module dependencies, re-exports, wildcard imports
Symbol Extraction	Variables, constants, type aliases, properties
Docstring Parsing	Google, NumPy, Sphinx, JSDoc, RustDoc, and 10+ formats
Syntax-Aware Chunking	Split code by semantic boundaries for RAG pipelines
Diagnostics	Parse errors with line/column positions

Output Formats (6)

Format	Use case	Example
Plain	Raw text, no markup	`"Chapter 1\nIntroduction"`
Markdown	Readable, structured, RAG-friendly	`"# Chapter 1\n## Introduction"`
Djot	Modern lightweight markup	Similar to Markdown but stricter
HTML	Styled, browser-ready	`<h1>Chapter 1</h1>`
JSON	Machine-readable tree structure	Hierarchical sections with heading levels
DocTags	Docling-compatible tag stream	Document interchange and vision-language models

Deployment Modes

Mode	Command	Transport	Use case
Library	`xberg::extract()`	Async functions	Embed in your application
CLI	`xberg extract document.pdf`	14 commands	Scripts, batch jobs, CI/CD
REST API	`xberg serve`	HTTP POST	Microservice, serverless deployment
MCP Server	`xberg mcp`	stdio or HTTP	Claude, Cursor, IDE agents
Docker	`docker run ghcr.io/xberg-io/xberg`	All modes	Container deployment

OCR Backends

Tesseract — Native C FFI (Linux/macOS/Windows) and WASM (browser)
PaddleOCR — ONNX Runtime, mobile-optimized models
Candle — Pure Rust, CPU-only, lightweight
VLM — GPT-4 Vision, Claude Vision, Gemini Vision, or 165 providers via liter-llm

Fallback chains. Extensible via plugin system.

Embeddings

Local (ONNX Runtime):

Preset models: fast, balanced (default), quality, multilingual
Dimensions: 384, 768, 1024

Provider-hosted:

OpenAI, Anthropic, Google, Hugging Face, Mistral, Cohere, and 165 providers total
Via liter-llm integration

Reranking:

Local ONNX rerankers (cross-encoder models)
Provider-hosted: Cohere Rerank, others

Structured LLM Extraction

Local engines: Ollama, LM Studio, vLLM

Remote: OpenAI, Anthropic, Google, Mistral, Cohere, and 165 providers via liter-llm

Schema validation. Temperature, top-p, frequency penalty tuning.

Enrichment

NER — GLiNER or LLM-based entity recognition
Redaction — Mask PII (phone, email, SSN, credit card, addresses)
Summarization — Document and section summaries via LLM
Translation — Multi-language via LLM
Page Classification — Tag document pages (cover, toc, content, etc.)
QR Code Detection — Extract and decode QR codes from images
Keyword Extraction — YAKE or RAKE algorithms
Language Detection — Detect document language
Layout Detection — RT-DETR + TATR models for document structure
Table Extraction — Cell-level structure and content
Token Reduction — TOON wire format (~30–50% fewer tokens than JSON)

CLI Reference

All 14 commands

Command	Subcommands	Purpose
`extract`	—	Extract text from a single document (path, URL, or stdin)
`batch`	—	Extract from multiple documents in parallel
`detect`	—	Identify MIME type of a file
`formats`	—	List all supported formats and MIME types
`version`	—	Show Xberg version
`cache`	`stats`, `clear`, `manifest`, `warm`	Manage extraction cache and models
`tree-sitter`	`download`, `list`, `cache-dir`, `clean`	Manage code-intelligence grammars
`doctor`	—	Diagnose the local installation and runtime dependencies
`serve`	—	Start REST API server (default: http://127.0.0.1:8000)
`mcp`	—	Start MCP server (stdio or HTTP transport)
`api`	`schema`	Output OpenAPI 3.1 specification
`embed`	—	Generate embeddings for text (local or provider-hosted)
`chunk`	—	Split text into chunks (text, markdown, YAML, or semantic)
`completions`	—	Generate shell completion scripts

Run xberg --help or xberg <command> --help for detailed options.

Documentation

Full guides, API references for every binding, format reference, and configuration docs live at xberg.io.

Getting Started
Quick Start
Guides
API Reference (Rust core) — every binding has its own page under /reference/
Format Reference
Live Demo (browser, WASM)

Built with Xberg

Projects that declare Xberg as a dependency. Xberg was previously published as kreuzberg, and most of these projects declare the package under that name.

Project	What it is	Stars
basemind	AI context and content layer for coding agents over one MCP server: code map, document RAG, shared memory and web crawl
delulu	A suite of MCP servers and CLI tools that give your LLM better search and fewer hallucinations
docs-mcp-server	Grounded documentation MCP server, an open-source alternative to Context7, Nia and Ref.Tools
erato	The open-source AI platform
fastmail-cli	CLI and MCP server for Fastmail: email, contacts, masked email, attachments and text extraction
ghfdb-portal	Web portal for the Global Heat Flow Database
hawki-toolkit-file-converter	Prepares and converts PDF files for the HAWKI toolkit
haystack-core-integrations	Integrations that extend Haystack with extra components and document stores
kreuzakt	A search engine for humans and computers, aimed at your most boring documents
lilbee	The whole local AI stack in one executable, with conversational search and cited answers over your files, code and the web
llm-workflow-engine	Power CLI and workflow manager for LLMs
MANSPIDER	Spiders entire networks for files sitting on SMB shares, searching filenames or contents with regex
otoroshi-llm-extension	Connect, secure and manage LLM models behind one OpenAI-compatible API
sift-kg	Turns a collection of documents into a knowledge graph, extracting entities and relationships with an LLM
sirchmunk	Turns raw data into a self-evolving, real-time search and intelligence layer
support-chatbot	Level-1 support chatbot for the Netherlands Red Cross 510 team

Using Xberg in your project? Open a PR adding it to this list.

Contributing

Contributions are welcome! See CONTRIBUTING.md for guidelines.

Join our Discord community for questions and discussion.

Part of Xberg.io

Xberg — the open-source content-intelligence engine: text, tables, and metadata from 100 formats (120 file extensions), with OCR, transcription, and code intelligence. MIT.
Xberg Pro — a complete self-hosted content-intelligence backend in a single container. Commercial.
Xberg Enterprise — the distributed, governed content-intelligence platform, scaled on Kubernetes with team governance and support. Commercial.
crawlberg — web crawling and scraping with HTML→Markdown and headless-Chrome fallback.
html-to-markdown — fast, lossless HTML→Markdown engine.
liter-llm — universal LLM API client with native bindings for 14 languages and 165 providers.
tree-sitter-language-pack — tree-sitter grammars and code-intelligence primitives.
alef — the polyglot binding generator that produces every per-language binding across the 5 polyglot repos.

License

MIT License (MIT) — see LICENSE for details.