markdown-converter/THIRD-PARTY-NOTICES.md

Third-Party Notices & Licenses

MarkdownConverter (this app) is MIT-licensed. This document lists the third-party components that are distributed with the application, their licenses, and where to obtain source code. Full license texts for the copyleft and font licenses referenced here are in the third-party-licenses/ folder shipped alongside this file (and in the source repository).

This product includes software developed by third parties under the licenses below. Copyright and license notices are reproduced verbatim or referenced per each license's terms.

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1. This application

MarkdownConverter — Copyright (C) 2024-2025 ConcreteInfo (Amit Haridas) — MIT License. See the repository LICENSE file.

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2. Bundled external binaries

These run as separate operating-system processes, launched via execFile with literal argv (never a shell, never linked into the app).

Component	Version	License	Notes
Pandoc	3.9.0.2	GPL-2.0-or-later	Downloaded at build time by scripts/download-tools.js (SHA-256 pinned); license: GPL-2.0
FFmpeg	bundled by ffmpeg-static 5.3.0	GPL-3.0-or-later build (--enable-gpl --enable-libx264/x265)	License text: https://ffmpeg.org/legal.html; source offer below
MarkItDown	0.1.7 (+ Python deps)	MIT	Microsoft's any-file→Markdown importer, frozen with PyInstaller by scripts/bundle-markitdown.js; includes an embedded CPython runtime (PSF license)
sharp / libvips prebuilt binaries	0.35.4	Apache-2.0 / LGPL-2.1-or-later (libvips)	Dynamically loaded native addon; LGPL compliance: this app's full MIT source is public, enabling relinking; license: LGPL-2.1
KaTeX (CSS + fonts)	0.18.5	MIT	assets/katex/
JetBrains Mono, Fira Code fonts	—	SIL OFL 1.1	assets/fonts/; license: OFL-1.1
Electron	41.x	MIT	and its bundled Chromium (BSD-style licenses) / Node.js (MIT) / OpenSSL (Apache-2.0) — see https://www.electronjs.org/blog/electron-licensing

GPL source availability (GPL §3 offer)

Corresponding source for every GPL-licensed binary distributed with this app is available on written request and from these permanent locations — see SOURCES.md for exact versions and URLs.

Python packages inside the bundled MarkItDown binary

The frozen MarkItDown binary embeds CPython and (each MIT/Apache-2.0/BSD-3/ PSF/MPL-2.0 licensed unless noted): markitdown, onnxruntime (MIT), numpy (BSD-3), magika (Apache-2.0), beautifulsoup4 / soupsieve (MIT), requests (Apache-2.0) + urllib3/idna/charset-normalizer, certifi (MPL-2.0), markdownify, defusedxml (PSF), protobuf (BSD-3), flatbuffers (Apache-2.0), pdfminer.six (MIT), python-docx, python-pptx, openpyxl, extract-msg, markdown-it-py / mdurl, pyinstaller (GPL-2.0-with-exception — build tool only; its bootloader is embedded, source offer included in SOURCES.md), Packaging, six, click, chardet (LGPL — dynamically loadable Python module).

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3. npm dependencies shipped in the app (runtime)

Package	Version	License
@cantoo/pdf-lib	2.9.1	MIT
@codemirror/* (autocomplete, commands, lang-*, language, lint, search, state, theme-one-dark, view), codemirror	6.x	MIT
@replit/codemirror-vim	6.4.0	MIT
core-util-is	1.0.3	MIT
docx	9.6.1	MIT
dompurify	3.4.14	(MPL-2.0 OR Apache-2.0)
electron-store	10.1.0	MIT
ffmpeg-static	5.3.0	GPL-3.0-or-later (binary; see §2)
highlight.js	11.11.1	BSD-3-Clause
html2pdf.js	0.14.0	MIT
jszip	3.10.1	(MIT OR GPL-3.0-or-later)
katex	0.18.5	MIT
marked, marked-footnote, marked-highlight	17.x / 1.4 / 2.2	MIT
mermaid	11.17.2	MIT
pdfjs-dist	5.5.207	Apache-2.0
pdfkit	0.17.2	MIT
pizzip	3.2.0	(MIT OR GPL-3.0)
sharp	0.35.4	Apache-2.0 (+ LGPL libvips binaries; see §2)
simple-git	3.36.0	MIT
tslib	2.8.1	0BSD

(Development-only dependencies — electron-builder, eslint, prettier, jest, cross-env, @testing-library/dom — are not distributed with the application.)

4. Optional external tools (NOT bundled)

These are detected and used when the user installs them; no copy is distributed with this app, so no redistribution obligations arise:

• LibreOffice (MPL-2.0) — enhanced Office-format conversion
• MiKTeX / TeX Live (LPPL/GPL per component) — LaTeX PDF export
• ImageMagick (Apache-2.0-style) — extra image formats in the universal converter
• PlantUML (GPL-3.0) + a Java runtime — local diagram rendering
• Calibre (ebook-convert) — MOBI export
• System MarkItDown with [all] extras — audio transcription / OCR

5. Trademarks

Product names used to describe compatibility (Pandoc, FFmpeg, LibreOffice, MarkItDown, Microsoft, Excel, Word, PowerPoint…) are trademarks of their respective owners and are not affiliated with this project.

6. License texts

See the third-party-licenses/ directory: GPL-2.0.txt, LGPL-2.1.txt, MPL-2.0.txt, Apache-2.0.txt, OFL-1.1.txt, PSF-Python.txt. MIT and BSD-3-Clause texts are short and reproduced in each package's own repository; per-package LICENSE files also ship inside node_modules/ in source form.