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FolioReader logoFolioReaderKit

📚 A Swift ePub reader and parser framework for iOS.

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FolioReader's avatar

FolioReader-Android

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A Java ePub reader and parser framework for Android.

futurepress's avatar

epub.js

6,394

Enhanced eBooks in the browser.

Quick Overview

FolioReaderKit is an open-source ePub reader and parser framework for iOS written in Swift. It provides a customizable and feature-rich reading experience for ePub books, including support for various text formatting options, highlighting, and annotations.

Pros

  • Highly customizable with a wide range of features for ePub reading
  • Built-in support for text-to-speech and audio playback
  • Includes a night mode and font size adjustment options for improved readability
  • Active development and community support

Cons

  • Limited to iOS platform, not available for Android or web
  • May require additional setup for more advanced features
  • Documentation could be more comprehensive for some features
  • Some reported issues with specific ePub formats or complex layouts

Code Examples

  1. Initialize and present the FolioReader:
import FolioReaderKit

let config = FolioReaderConfig()
let folioReader = FolioReader()
folioReader.presentReader(parentViewController: self, withEpubPath: epubPath, andConfig: config)
  1. Customize the reader appearance:
let config = FolioReaderConfig()
config.tintColor = UIColor.blue
config.nightModeBackground = UIColor.black
config.nightModeMenuBackground = UIColor.darkGray
config.menuTextColor = UIColor.white
  1. Implement the FolioReaderDelegate:
class YourViewController: UIViewController, FolioReaderDelegate {
    func folioReader(_ folioReader: FolioReader, didFinishReadingBook book: FRBook) {
        print("Finished reading: \(book.title)")
    }
    
    func folioReader(_ folioReader: FolioReader, didHighlightText highlight: Highlight, onPage page: Int) {
        print("Highlighted text: \(highlight.content) on page \(page)")
    }
}

Getting Started

  1. Add FolioReaderKit to your project using CocoaPods:
pod 'FolioReaderKit'
  1. Import the framework in your Swift file:
import FolioReaderKit
  1. Initialize and present the reader:
let config = FolioReaderConfig()
let folioReader = FolioReader()
folioReader.presentReader(parentViewController: self, withEpubPath: "book.epub", andConfig: config)
  1. Customize the reader as needed using the FolioReaderConfig object.

Competitor Comparisons

FolioReader logo

FolioReader-Android

2,247

A Java ePub reader and parser framework for Android.

Pros of FolioReader-Android

  • Native Android development, potentially better performance on Android devices
  • Larger community and more frequent updates
  • More comprehensive feature set for Android-specific functionalities

Cons of FolioReader-Android

  • Limited to Android platform, lacks cross-platform compatibility
  • May require more effort to maintain due to Android fragmentation
  • Potentially steeper learning curve for iOS developers

Code Comparison

FolioReader-Android (Kotlin):

override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    setContentView(R.layout.activity_folioreader)
    val config = Config(applicationContext, "db")
    FolioReader.get().setConfig(config, true)
}

FolioReaderKit (Swift):

override func viewDidLoad() {
    super.viewDidLoad()
    let config = FolioReaderConfig()
    let folioReader = FolioReader()
    folioReader.presentReader(parentViewController: self, withEpubPath: epubPath, andConfig: config)
}

Both repositories provide EPUB reader functionality for their respective platforms. FolioReader-Android offers a more tailored experience for Android users, while FolioReaderKit provides a solution for iOS developers. The code snippets demonstrate the initialization process for each library, highlighting the platform-specific differences in implementation.

futurepress logo

epub.js

6,394

Enhanced eBooks in the browser.

Pros of epub.js

  • Cross-platform compatibility (works in browsers and Node.js)
  • Lightweight and flexible, allowing for easy integration into various projects
  • Extensive documentation and active community support

Cons of epub.js

  • Limited built-in UI components, requiring more custom development
  • Fewer advanced features out-of-the-box compared to FolioReaderKit
  • May require additional work for mobile-specific optimizations

Code Comparison

FolioReaderKit (Swift):

let config = FolioReaderConfig()
let folioReader = FolioReader()
folioReader.presentReader(parentViewController: self, withEpubPath: epubPath, andConfig: config)

epub.js (JavaScript):

var book = ePub("book.epub");
var rendition = book.renderTo("viewer", {
  width: "100%",
  height: "100%"
});
rendition.display();

Both libraries provide easy ways to render EPUB files, but FolioReaderKit offers a more comprehensive, ready-to-use solution for iOS, while epub.js provides a flexible foundation for custom implementations across platforms. FolioReaderKit includes built-in UI components and iOS-specific optimizations, whereas epub.js requires more custom development but offers greater flexibility for web-based and cross-platform projects.

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README

FolioReader logo FolioReaderKit is an ePub reader and parser framework for iOS written in Swift.

Version License

Features

  • ePub 2 and ePub 3 support
  • Custom Fonts
  • Custom Text Size
  • Text Highlighting
  • List / Edit / Delete Highlights
  • Themes / Day mode / Night mode
  • Handle Internal and External Links
  • Portrait / Landscape
  • Reading Time Left / Pages left
  • In-App Dictionary
  • Media Overlays (Sync text rendering with audio playback)
  • TTS - Text to Speech Support
  • Parse epub cover image
  • RTL Support
  • Vertical or/and Horizontal scrolling
  • Share Custom Image Quotes NEW
  • Support multiple instances at same time, like parallel reading NEW
  • Book Search
  • Add Notes to a Highlight

Who is using it?

On AppSight you can see apps that are using it in production.

Demo

Custom Fonts :smirk:Text Highlighting :heart_eyes:
Custom fontsHighlight
Reading Time Left :open_mouth:Media Overlays 😭
Time leftMedia Overlays

Installation

FolioReaderKit is available through CocoaPods and Carthage.

Cocoapods

CocoaPods is a dependency manager for Cocoa projects. You can install it with the following command:

$ gem install cocoapods

To integrate FolioReaderKit into your Xcode project using CocoaPods, specify it in your Podfile:

source 'https://github.com/CocoaPods/Specs.git'
platform :ios, '9.0'
use_frameworks!

target '<Your Target Name>' do
    pod 'FolioReaderKit'
end

Then, run the following command:

$ pod install

Alternatively to give it a test run, run the command:

$ pod try FolioReaderKit

Carthage

Add the following to your Cartfile

github "FolioReader/FolioReaderKit"

Run the following command:

$ carthage update --platform iOS --no-use-binaries

Then, follow the steps as described in Carthage's README.

Requirements

  • iOS 9.0+
  • Xcode 10.1+

Basic Usage

To get started, this is a simple usage sample of using the integrated view controller.

import FolioReaderKit

func open(sender: AnyObject) {
    let config = FolioReaderConfig()
    let bookPath = Bundle.main.path(forResource: "book", ofType: "epub")
    let folioReader = FolioReader()
    folioReader.presentReader(parentViewController: self, withEpubPath: bookPath!, andConfig: config)
}

For more usage examples check the Example folder.

Storyboard

To get started, here is a simple example how to use the integrated view controller with storyboards.

import FolioReaderKit

class StoryboardFolioReaderContrainer: FolioReaderContainer {
    required init?(coder aDecoder: NSCoder) {
        super.init(coder: aDecoder)
        
        let config = FolioReaderConfig()
        config.scrollDirection = .horizontalWithVerticalContent
        
        guard let bookPath = Bundle.main.path(forResource: "The Silver Chair", ofType: "epub") else { return }
        setupConfig(config, epubPath: bookPath)
    }
}

Go to your storyboard file, choose or create the view controller that should present the epub reader. In the identity inspector set StoryboardFolioReaderContrainer as class.

Documentation

Checkout Example and API Documentation

You can always use the header-doc. (use alt+click in Xcode)

Migration

If you are migrating to a newer version check out MIGRATION and CHANGELOG.

Author

Heberti Almeida

License

FolioReaderKit is available under the BSD license. See the LICENSE file.