PDF 直接丢给大模型，表格乱码、公式崩溃、扫描件还认不出字。

这 5 个工具帮你把文档转成 AI 能读的干净格式。

1、Stirling-PDF — 本地 PDF 全能工具箱，85k star

合并、拆分、压缩、加水印、转格式，几十种操作全在本地跑，文件不出本机，隐私敏感的文档放心用。

https://github.com/Stirling-Tools/Stirling-PDF…

2、MinerU — 复杂文档转 Markdown，71.7k star

PDF、Office 里的表格、公式、图片精准抠出来转成 AI 可读的 Markdown，喂给大模型做问答前必备的一步。

https://github.com/opendatalab/MinerU…

3、docling — 文档为生成式 AI 做准备，62.3k star

IBM 出品，把各种格式文档统一转成结构化输出，接 RAG 流程很顺，企业文档处理的热门选择。

https://github.com/docling-project/docling…

4、marker — PDF 高精度转 Markdown，36.6k star

速度快、还原准，长文档、论文转 Markdown 加 JSON，排版和结构保留得好。

https://github.com/datalab-to/marker…

5、OCRmyPDF — 给扫描件加文字层，34k star

扫描的 PDF 没法选字搜字，它自动 OCR 加上文字层，扫描件秒变可搜索可复制。

https://github.com/ocrmypdf/OCRmyPDF…

Stirling-Tools/Stirling-PDF

Source: https://github.com/Stirling-Tools/Stirling-PDF

Stirling PDF - The Open-Source PDF Platform

Stirling PDF is a powerful, open-source PDF editing platform. Run it as a personal desktop app, in the browser, or deploy it on your own servers with a private API. Edit, sign, redact, convert, and automate PDFs without sending documents to external services.

Key Capabilities

• Everywhere you work - Desktop client, browser UI, and self-hosted server with a private API.
• 50+ PDF tools - Edit, merge, split, sign, redact, convert, OCR, compress, and more.
• Automation & workflows - No-code pipelines direct in UI with APIs to process millions of PDFs.
• Enterprise‑grade - SSO, auditing, and flexible on‑prem deployments.
• Developer platform - REST APIs available for nearly all tools to integrate into your existing systems.
• Global UI - Interface available in 40+ languages.

For a full feature list, see the docs: https://docs.stirlingpdf.com

Quick Start

docker run -p 8080:8080 docker.stirlingpdf.com/stirlingtools/stirling-pdf

Then open: http://localhost:8080

For full installation options (including desktop and Kubernetes), see our Documentation Guide.

Resources

• Documentation
• Homepage
• API Docs
• Server Plan & Enterprise

Support

• Community Discord
• Bug Reports: Github issues

Contributing

We welcome contributions! Please see CONTRIBUTING.md for guidelines.

This project uses Task as a unified command runner for all build, dev, and test commands. Run task dev to get started running the editor, run task to see the most common commands, or see the Developer Guide for full details.

For adding translations, see the Translation Guide.

License

Stirling PDF is open-core. See LICENSE for details.