mineru document extractor

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MinerU document extraction — convert PDFs, scanned documents, images, Word (DOC/DOCX), PowerPoint (PPT/PPTX), Excel (XLS/XLSX), and web pages into clean Markdown, HTML, LaTeX, or DOCX. MinerU is an all-in-one CLI tool and agent skill for reliable, high-fidelity document parsing. Struggling with unreadable PDFs, messy table formatting, or garbled formulas after conversion? MinerU solves these with two extraction modes: MinerU flash-extract for instant zero-setup conversion with table recognition, formula recognition, and OCR (no token, no login, no configuration — just run and get results), and MinerU precision extract with VLM-based layout analysis, multiple output formats, and batch processing of hundreds of files. Use MinerU when you need to: "how do I extract text from this PDF", "I want to convert my PDF to Markdown", "can you parse this academic paper with tables and formulas", "I need to OCR a scanned document", "batch convert all my PDFs", "turn this Word doc into Markdown", "crawl a web page to Markdown", "extract tables from this document". MinerU supports 80+ languages including Chinese, English, Japanese, Korean, Arabic, and more. Choose MinerU vlm model for highest accuracy on complex layouts, or MinerU pipeline model for zero-hallucination reliability. Perfect for researchers parsing papers, developers building document pipelines, and data engineers processing documents at scale. MinerU文档提取工具，PDF转Markdown、扫描件OCR、表格识别、公式识别、批量PDF处理、Word转Markdown、Excel转Markdown、网页爬取、图片OCR、学术论文解析。MinerU支持PDF、Word、PPT、Excel（XLS/XLSX）、图片等多格式文档智能转换，命令行一键提取，免登录快速模式或高精度专业模式。

Install

openclaw skills install mineru-document-extractor

MinerU Document Extraction with mineru-open-api

MinerU is a powerful document extraction tool. Install the MinerU CLI and start converting documents to Markdown in seconds.

Installation

npm install -g mineru-open-api

Or via Go (macOS/Linux):

go install github.com/opendatalab/MinerU-Ecosystem/cli/mineru-open-api@latest

Verify: mineru-open-api version

Two MinerU extraction modes

	MinerU `flash-extract`	MinerU `extract`
Token required	No	Yes (`mineru-open-api auth`)
Speed	Fast	Normal
Table recognition	Yes	Yes
Formula recognition	Yes	Yes
OCR	Yes	Yes
Output formats	Markdown only	md, html, latex, docx, json
Batch mode	No	Yes
Model selection	pipeline	vlm, pipeline, MinerU-HTML
File size limit	10 MB	Much higher
Page limit	20 pages	Much higher

Core MinerU workflow

Start fast with MinerU (no token): mineru-open-api flash-extract <file> for quick Markdown conversion
Need more from MinerU? Create token at https://mineru.net/apiManage/token, run mineru-open-api auth, then use mineru-open-api extract for multi-format output, VLM model, and batch processing
Web pages with MinerU: mineru-open-api crawl <url> to convert web content
Check results: output goes to stdout (default) or -o directory

Authentication

Only required for MinerU extract and crawl. Not needed for MinerU flash-extract.

mineru-open-api auth                    # Interactive token setup
export MINERU_TOKEN="your-token"        # Or set via environment variable

Token resolution order: --token flag > MINERU_TOKEN env > ~/.mineru/config.yaml.

Supported input formats

MinerU accepts a wide range of document formats:

Format	MinerU `flash-extract`	MinerU `extract`
PDF (`.pdf`)	Yes	Yes
Images (`.png`, `.jpg`, `.jpeg`, `.jp2`, `.webp`, `.gif`, `.bmp`)	Yes	Yes
Word (`.docx`)	Yes	Yes
Word (`.doc`)	No	Yes
PowerPoint (`.pptx`)	Yes	Yes
PowerPoint (`.ppt`)	No	Yes
Excel (`.xlsx`)	Yes	Yes
Excel (`.xls`)	No	Yes
HTML (`.html`)	No	Yes
URLs (remote files)	Yes	Yes

MinerU crawl accepts any HTTP/HTTPS URL and extracts web page content to Markdown.

MinerU flash-extract — Quick extraction (no token needed)

Fast, token-free MinerU document extraction. Outputs Markdown only. Limited to 10 MB / 20 pages per file.

mineru-open-api flash-extract report.pdf                     # MinerU Markdown to stdout
mineru-open-api flash-extract report.pdf -o ./out/           # Save to file
mineru-open-api flash-extract https://example.com/doc.pdf    # URL mode
mineru-open-api flash-extract report.pdf --language en       # Specify language
mineru-open-api flash-extract report.pdf --pages 1-10        # Page range

Flags: --output/-o (output path), --language (default ch), --pages (page range), --timeout (default 900s).

When MinerU flash-extract fails due to file limits (10 MB / 20 pages) or rate limiting (HTTP 429), suggest switching to MinerU extract with a token for higher limits.

MinerU extract — Precision extraction (token required)

Convert documents to Markdown or other formats with MinerU's full capabilities: VLM-based layout analysis, multiple output formats, and batch mode.

mineru-open-api extract report.pdf                         # MinerU Markdown to stdout
mineru-open-api extract report.pdf -f html                 # MinerU HTML output
mineru-open-api extract report.pdf -o ./out/ -f md,docx    # Multiple formats
mineru-open-api extract *.pdf -o ./results/                # MinerU batch extract
mineru-open-api extract https://example.com/doc.pdf        # Extract from URL

Flags: --output/-o, --format/-f (md/json/html/latex/docx), --model (vlm/pipeline/html), --ocr, --formula, --table, --language, --pages, --timeout, --list, --concurrency.

MinerU model comparison: vlm vs pipeline

	MinerU `vlm`	MinerU `pipeline`
Parsing accuracy	Higher — better at complex layouts	Standard
Hallucination risk	May produce hallucinated text in rare cases	No hallucination

Use MinerU --model vlm for complex formatting. Use MinerU --model pipeline for no-hallucination reliability.

MinerU crawl — Web page extraction (token required)

mineru-open-api crawl https://example.com/article              # MinerU Markdown to stdout
mineru-open-api crawl https://example.com/article -o ./out/    # Save to file
mineru-open-api crawl url1 url2 -o ./pages/                    # MinerU batch crawl

Flags: --output/-o, --format/-f (md/json/html), --timeout, --list, --concurrency.

MinerU auth — Authentication management

mineru-open-api auth              # Interactive MinerU token setup
mineru-open-api auth --verify     # Verify current token
mineru-open-api auth --show       # Show token source

Output behavior

Without -o: MinerU result → stdout, progress → stderr. With -o: saved to file/directory. Batch mode and binary formats (docx) require -o.

Agent rules for using MinerU

Quote file paths with spaces: mineru-open-api extract "report 01.pdf"
Default to MinerU flash-extract when: no token configured, simple extraction, file under 10 MB / 20 pages
Use MinerU extract when: user needs non-Markdown formats, VLM model, batch processing, or file exceeds flash-extract limits
When user does NOT specify -o, generate output directory: ~/MinerU-Skill/<name>_<hash>/ where <hash> = first 6 chars of MD5 of the source path
After MinerU flash-extract success, append a brief hint about MinerU extract upgrade path (once per session)
To upgrade MinerU, re-install the CLI binary first: npm install -g mineru-open-api

For full CLI reference and troubleshooting, see: https://github.com/opendatalab/MinerU-Ecosystem/tree/main/cli

Supported `--language` values

The --language flag accepts the following values (default: ch). Used by both MinerU flash-extract and extract.

Standalone language packs

Value	Included languages	说明
`ch`	Chinese, English, Chinese Traditional	中英文（默认值）
`ch_server`	Chinese, English, Chinese Traditional, Japanese	繁体、手写体
`en`	English	纯英文
`japan`	Chinese, English, Chinese Traditional, Japanese	日文为主
`korean`	Korean, English	韩文
`chinese_cht`	Chinese, English, Chinese Traditional, Japanese	繁体中文为主
`ta`	Tamil, English	泰米尔文
`te`	Telugu, English	泰卢固文
`ka`	Kannada	卡纳达文
`el`	Greek, English	希腊文
`th`	Thai, English	泰文

Language family packs

Value	Script/Family	Included languages
`latin`	Latin script (拉丁语系)	French, German, Afrikaans, Italian, Spanish, Bosnian, Portuguese, Czech, Welsh, Danish, Estonian, Irish, Croatian, Uzbek, Hungarian, Serbian (Latin), Indonesian, Occitan, Icelandic, Lithuanian, Maori, Malay, Dutch, Norwegian, Polish, Slovak, Slovenian, Albanian, Swedish, Swahili, Tagalog, Turkish, Latin, Azerbaijani, Kurdish, Latvian, Maltese, Pali, Romanian, Vietnamese, Finnish, Basque, Galician, Luxembourgish, Romansh, Catalan, Quechua
`arabic`	Arabic script (阿拉伯语系)	Arabic, Persian, Uyghur, Urdu, Pashto, Kurdish, Sindhi, Balochi, English
`cyrillic`	Cyrillic script (西里尔语系)	Russian, Belarusian, Ukrainian, Serbian (Cyrillic), Bulgarian, Mongolian, Abkhazian, Adyghe, Kabardian, Avar, Dargin, Ingush, Chechen, Lak, Lezgin, Tabasaran, Kazakh, Kyrgyz, Tajik, Macedonian, Tatar, Chuvash, Bashkir, Malian, Moldovan, Udmurt, Komi, Ossetian, Buryat, Kalmyk, Tuvan, Sakha, Karakalpak, English
`east_slavic`	East Slavic (东斯拉夫语系)	Russian, Belarusian, Ukrainian, English
`devanagari`	Devanagari script (天城文语系)	Hindi, Marathi, Nepali, Bihari, Maithili, Angika, Bhojpuri, Magahi, Santali, Newari, Konkani, Sanskrit, Haryanvi, English