head to head · open source
PyMuPDF vs TranslateBooksWithLLMs
PyMuPDF has 10,744 GitHub stars, 800 forks, 58 open issues and last shipped 3 days ago. TranslateBooksWithLLMs has 2,424 stars, 319 forks, 23 open issues and last shipped 3 days ago. PyMuPDF leads on adoption by 343% (10,744 vs 2,424 stars). PyMuPDF is written in Python under AGPL-3.0; TranslateBooksWithLLMs is written in Python under AGPL-3.0. PyMuPDF has attracted 7% as many forks as stars, TranslateBooksWithLLMs 13%. PyMuPDF was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (epub), so they are genuine substitutes rather than adjacent tools.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| PyMuPDF | TranslateBooksWithLLMs | |
|---|---|---|
| GitHub stars | ★ 11K | ★ 2.4K |
| License | AGPL-3.0 | AGPL-3.0 |
| Written in | Python | Python |
| Last push | 2026-09-17 | 2026-09-17 |
| Forks | ⑂ 800 | ⑂ 319 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick PyMuPDF if
- You weight community size — 11K stars and counting
- You want the AGPL-3.0 license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick TranslateBooksWithLLMs if
- You want the TranslateBooksWithLLMs feature set and don't need the biggest community
- You prefer the AGPL-3.0 license terms
- Your stack matches Python
- You evaluated both and TranslateBooksWithLLMs fits your workflow better
About PyMuPDF
PyMuPDF is a high performance Python library, built on the MuPDF C engine, for extracting, analysing, converting, rendering and manipulating PDF and other documents, aimed at Python developers building data extraction, document processing and AI retrieval pipelines.
read the full PyMuPDF overview →
About TranslateBooksWithLLMs
TranslateBooksWithLLMs is a Python desktop application under AGPL 3.0 for translating full length books, documents, and subtitle files with large language models. It lives in the Content and Publishing ecosystem, specifically around ebook translation, document localization, and publishing related workflows. The project ships as a local app that opens a browser interface at http://localhost:5000 after the bundled executable is run.
read the full TranslateBooksWithLLMs overview →
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Frequently asked questions
Is PyMuPDF or TranslateBooksWithLLMs more popular?
PyMuPDF has 10,744 GitHub stars and TranslateBooksWithLLMs has 2,424. PyMuPDF has the larger community by that measure.
Are PyMuPDF and TranslateBooksWithLLMs free?
Both are open source. PyMuPDF is licensed under AGPL-3.0 and TranslateBooksWithLLMs under AGPL-3.0. Neither carries a licence fee.
What is the difference between PyMuPDF and TranslateBooksWithLLMs?
PyMuPDF is written in Python and TranslateBooksWithLLMs in Python. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, PyMuPDF or TranslateBooksWithLLMs?
Choose PyMuPDF if you want the larger community (10,744 stars) or its AGPL-3.0 licence terms. Choose TranslateBooksWithLLMs if its feature set, stack or AGPL-3.0 licence fits better. Both are self-hostable.