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A little curiosity. A world of open source.
THE FIRST COLLECTIONAn MIT-licensed family of independent TypeScript packages that convert losslessly between OOXML, OpenDocument, Markdown, EPUB, PDF, RTF and legacy formats through one shared Zod schema, with a CLI, MCP server and web UI built on top.
MinerU is an open-source document parsing engine that converts PDF, images, DOCX, PPTX, and XLSX into structured Markdown/JSON for LLM, RAG, and agent workflows. It supports VLM+OCR dual engines, 109-language OCR, and private/offline deployment.
WeasyPrint is a Python-based HTML/CSS to PDF rendering engine that helps developers generate professional documents like reports, invoices, and tickets from web markup.
A tool for writing and generating interactive gamebooks from Markdown and YAML, with builds for HTML, PDF, EPUB, and optional MOBI.
Sioyek is a PDF viewer optimized for textbooks and research papers, offering features like smart jumps, portals, highlights, and customizable keybindings. It supports Windows, macOS, and Linux with official and third-party packages.
AksharaMD is a local, parser-agnostic tool that grades how well a chosen document parser converted a source file into AI-friendly Markdown, returning a per-document readiness score, block-level provenance tags, named warnings, and an optional source-grounded ACCEPT/REJECT verdict.
Bundle is a privacy-first web toolkit providing PDF, image, developer, and text tools that run entirely in the browser without server uploads.
