# FolioReader/FolioReaderKit

📚 A Swift ePub reader and parser framework for iOS.

Repository: https://github.com/FolioReader/FolioReaderKit
Canonical: https://ross.abutalabs.com/products/folioreaderkit
Homepage: https://folioreader.github.io/FolioReaderKit/
Language: Swift
License: BSD-3-Clause
License Family: permissive
Topics: epub-reader, night-mode, custom-fonts, swift, highlight, ios, epub
Archived: true
Last push: 2020-09-22T23:49:02+00:00

## Health v2 (maintenance only)
Score: 10/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 4165, "days_push": 2171, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: archived
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2683, forks 780 (observed 2026-08-28T04:07:10.131367+00:00)

## What it is
FolioReaderKit is a Swift framework for iOS that reads and parses ePub 2 and ePub 3 files, providing a full in-app ebook reader experience. It includes features like text highlighting, custom fonts and themes, night mode, media overlays, and text-to-speech support.

## Use cases
- embed an epub reader in an ios app
- parse epub files in swift
- display ebooks with highlighting and night mode
- add text-to-speech reading to an ebook app
- read epub 2 and epub 3 books on ios
- extract epub cover images programmatically

## When to choose
- you need a ready-made, feature-rich epub reader ui for an iOS app
- you want highlighting, themes, and TTS out of the box in Swift
- your project targets iOS 9+ and uses CocoaPods or Carthage

## When to avoid
- you need active maintenance or support for the latest iOS/Swift versions, since the last release was in 2020
- you need book search or notes on highlights, which are unimplemented
- you target Android or cross-platform apps

## Facets
- artifact type: library
- maturity: maintenance
- function: parser, ui-components, tts
- domain: mobile-development, files, media
- platform: -
- tags: epub-reader, epub-parser, ebooks, swift-framework, highlighting, night-mode, text-to-speech, ios, swift, mobile

## Member repositories
- FolioReader/FolioReaderKit (main) score 10

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:07:10.131367+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 2026-08-30T02:17:52.299870+00:00, confidence not recorded.
  - readme: https://github.com/FolioReader/FolioReaderKit (fetched 2026-08-28T04:07:10.131367+00:00, sha e2c8835d1875)
  - homepage: https://folioreader.github.io/FolioReaderKit/ (fetched 2026-08-29T10:00:00.459802+00:00, sha aac77d0705f9)
- Data as of 2026-08-30T08:39:29.467469+00:00.