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Pandoc A Universal Markup Converter
https://github.com/jgm/pandoc
ESSAY Nav Toor @heynavtoor
A philosophy professor at UC Berkeley built one of the most useful tools on the internet.
Not a developer. Not a startup founder. Not a tech company. A philosophy professor named John MacFarlane.
He wrote it in Haskell. In 2006. He still maintains it today. Twenty years later.
It is called Pandoc. The Swiss Army knife of documents.
You give it any document in any format. It converts it to any other format. One command. Seconds.
Word to PDF. Done.
Markdown to PowerPoint. Done.
LaTeX to Word. Done.
HTML to ePub. Done.
Jupyter notebook to PDF. Done.
Word to Markdown. Done.
PowerPoint to Markdown. Done.
Excel to Markdown. Done.
50 plus formats. Any direction. One tool.
pandoc thesis.docx -o thesis.pdf
That is it. One line. Your 300-page thesis converted. Formatting preserved.
Here is what this replaces:
A PhD student at Berkeley converting a thesis from LaTeX to Word. By hand: 6 hours. Pandoc: 3 seconds.
A novelist in Brooklyn converting a manuscript to ePub for Kindle. By hand: two days. Pandoc: one command.
A startup in Chicago migrating 200 HTML blog posts to Markdown. By hand: a full week. Pandoc: 4 minutes.
A professor at MIT turning 200 Markdown lecture notes into a PowerPoint deck. By hand: 2 hours. Pandoc: one command.
Here is what online converters charge for the same work:
Zamzar: $25 a month.
CloudConvert: $8 a month.
Smallpdf Pro: $15 a month.
Adobe Acrobat Pro: $239.88 a year.
Every one of them uploads your documents to their servers. Your thesis. Your manuscript. Your private notes. Sitting on someone else’s machine.
Pandoc runs on your laptop. Nothing uploaded. Nothing sent anywhere.
44,997 stars on GitHub. GPL-2.0 license. Version 3.10 shipped June 4 2026.
Here is the wild part.
Pandoc powers R Markdown. Pandoc powers Jupyter Book. Pandoc powers Quarto. Every time you export a notebook to a PDF or render a research report, Pandoc is probably running underneath.
The standard of document conversion on the internet was built by one philosophy professor in his spare time.
In 2006, John wanted to write his lecture notes in a lightweight format and export them to Word, HTML, and PDF. He had never written a line of Haskell in his life. Pandoc was his first Haskell program.
He has shipped 14,505 commits since then. He co-wrote the CommonMark standard. He still teaches philosophy at Berkeley. He still ships Pandoc himself.
Microsoft did not build it. Adobe did not build it. Google did not build it.
One philosophy professor. Twenty years. Forty-five thousand stars.
Your documents. Your formats. Your machine. One command.
The week you used to lose to file conversion is back in your hands.
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