Code Quality Rank: L2
Programming language: Swift
License: BSD 3-clause "New" or "Revised" License
Tags: Media     PDF    
Latest version: v1.4.0

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

Version License


  • [x] ePub 2 and ePub 3 support
  • [x] Custom Fonts
  • [x] Custom Text Size
  • [x] Text Highlighting
  • [x] List / Edit / Delete Highlights
  • [x] Themes / Day mode / Night mode
  • [x] Handle Internal and External Links
  • [x] Portrait / Landscape
  • [x] Reading Time Left / Pages left
  • [x] In-App Dictionary
  • [x] Media Overlays (Sync text rendering with audio playback)
  • [x] TTS - Text to Speech Support
  • [x] Parse epub cover image
  • [x] RTL Support
  • [x] Vertical or/and Horizontal scrolling
  • [x] Share Custom Image Quotes NEW
  • [x] 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.


Custom Fonts :smirk: Text Highlighting :heart_eyes:
Custom fonts Highlight
Reading Time Left :open_mouth: Media Overlays ūüė≠
Time left Media Overlays


FolioReaderKit is available through CocoaPods and Carthage.


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'

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

Then, run the following command:

$ pod install

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

$ pod try FolioReaderKit


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.


  • 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.


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.


Checkout Example and API Documentation

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


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


Heberti Almeida


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

*Note that all licence references and agreements mentioned in the FolioReaderKit README section above are relevant to that project's source code only.