koreader/koreader
An ebook reader application supporting PDF, DjVu, EPUB, FB2 and many more formats, running on Cervantes, Kindle, Kobo, PocketBook and Android devices observed · 2026-08-28
Health v2 · maintenance only
89/100
- Activity 99
- Release rhythm 71
- Longevity 100
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.
- gap_med: 130.0
- age_days: 4910
- days_rel: 32
- days_push: 7
- n_releases_24m: 7
Adoption not part of the score
29289 stars · 1887 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded
KOReader is an open-source document viewer application primarily aimed at e-ink e-readers, supporting formats like PDF, DjVu, EPUB, FB2, Mobi, CBZ and more. It runs on Kindle, Kobo, PocketBook, Cervantes, reMarkable, Android, and desktop Linux/macOS, with a highly customizable, plugin-extensible reading experience.
Use cases
- read epub and pdf books on a kindle or kobo
- reflow scanned pdfs for e-ink reading
- replace stock ereader software with a faster reader
- browse and download ebooks via opds catalogs
- sync library with calibre wirelessly
- look up words with dictionaries while reading
- read ebooks on an android tablet with customizable typography
When to choose
- you own an e-ink device like Kindle, Kobo, PocketBook, or reMarkable and want a faster, more customizable reader
- you need broad format support including reflowable and fixed-layout documents
- you want dictionary lookups, OPDS, Wikipedia, and translation integration built in
- you want a plugin-extensible reader with OTA updates
When to avoid
- you want a simple consumer-grade reading app with minimal configuration
- you need DRM-protected commercial ebooks (e.g., Kindle store books, Adobe DRM)
- you need audiobook or heavy multimedia ebook support
- you only read on iOS, which is not supported
Facets
application · maturity active
pdf gui plugin-system internationalization file-system cross-platform files pdf developer-tools embedded-systems windows embedded cross-platform cli ebook-reader e-ink ereader epub djvu kindle kobo pocketbook opds calibre-integration luajit document-viewer pdf-reflow android linux macos
3 sources
- readme: https://github.com/koreader/koreader · fetched 2026-08-28 · 480b0f413cda
- homepage: http://koreader.rocks/ · fetched 2026-08-29 · 71278cdcb717
- site_page: http://koreader.rocks/doc · fetched 2026-08-29 · c341f1e54aa3
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| koreader/koreader | main | 89 |
For agents
markdown · JSON · MCP: product_card(name="koreader/koreader")
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem