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Rust based eBook library for Python, with MIT license

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HN · launched Apr 9, 2026 · 33 upvotes (top 20%) · 0 views

Niche: data parsing libraries and tools · 71 launches, 1 in the last 7 days · Explore this niche →

Category and tags

  • Horizontal
  • Dev tools
  • Developer
  • Not AI
  • Hobby / open-source project

Visit website ↗ Source listing ↗

Could you build this?

Partial Creating Python bindings with PyO3 is straightforward, but implementing a compliant eBook engine (parsing EPUB, MOBI, DRM-free Kindle formats, container zip, OPF, and XHTML) requires extensive file-format parsing.

What it would actually take: The core requires a Rust crate implementing strict ZIP container handling, XML/OPF parsing, CSS and XHTML normalization, and encoding conversion, exposed via PyO3 to Python. The difficulty lies in handling fragmented and malformed real-world EPUB/MOBI specifications gracefully without memory overhead. Systems programming experience in Rust and deep knowledge of complex legacy digital publishing specifications are required.

Discussion

3 comments analyzed.

Competitors mentioned: Calibre

Concerns raised: Concern about feature scope/bloat, Need for EPUB conformance validation

Feature requests: AZW3 support, Conformance suite for EPUB

Competitors

Other products that read as similar to this one : 886 launches clear the similarity bar, closest 8 shown.

Attention rank: #163 of 887 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).

Launched 161 days after the earliest competitor.

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