# geometer/FBReaderJ

Official FBReaderJ project repository

Repository: https://github.com/geometer/FBReaderJ
Canonical: https://ross.abutalabs.com/products/fbreaderj
Homepage: http://www.fbreader.org/FBReaderJ/
Language: Java
License Family: other
Last push: 2020-07-28T08:04:37+00:00

## Health v2 (maintenance only)
Score: 32/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 5817, "days_push": 2227, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, no_license, no_readme
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1849, forks 788 (observed 2026-08-28T04:05:44.145168+00:00)

## What it is
FBReaderJ is the official repository behind FBReader, a long-running e-book reader application for Android written in Java. It supports formats such as ePub (including Readium LCP-protected ePubs), and the Premium edition adds PDF and comics support, network translation integration, and read-aloud functionality.

## Use cases
- read epub books on my android phone
- open mobi and fb2 ebook files on mobile
- ebook reader that supports drm-protected epub with readium lcp
- listen to books read aloud on android
- manage a personal ebook library on a phone
- read pdf and comics on android

## When to choose
- you want a lightweight, mature e-book reader on Android with broad format support
- you need to open LCP-protected ePubs on a mobile device
- you prefer a one-time-purchase premium option over a subscription
- you need a reader that runs on old Android versions down to 5.0

## When to avoid
- you need an iOS, Windows, or Linux reader - this repository targets the Android app
- you want a fully open-source app with no paid tier or proprietary components
- you need advanced annotation or academic PDF markup features rather than casual reading
- you require a library or SDK to embed reading functionality in your own app rather than a standalone reader

## Facets
- artifact type: application
- maturity: active
- function: gui, pdf, tts
- domain: mobile-development, developer-tools, media
- platform: jvm
- tags: ebook-reader, epub, mobi, djvu, pdf-viewer, readium-lcp, text-to-speech, book-library, free-and-premium, android, mobile

## Member repositories
- geometer/FBReaderJ (main) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:05:44.145168+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T03:17:45.993819+00:00, confidence not recorded.
  - homepage: http://www.fbreader.org/FBReaderJ/ (fetched 2026-08-29T10:56:26.099362+00:00, sha 98348cf8d9a9)
  - site_page: https://fbreader.org/about (fetched 2026-08-29T10:56:26.111186+00:00, sha 38f50f3c87f5)
  - site_page: https://fbreader.org/faq (fetched 2026-08-29T10:56:26.108648+00:00, sha 676d90266ebe)
- Data as of 2026-08-30T08:39:29.467469+00:00.