EPUB Viewer Online Alternatives

EPUB Viewer Online is described as 'Online EPUB Reader' and is an website in the news & books category. There are more than 50 alternatives to EPUB Viewer Online, not only websites but also apps for a variety of platforms, including Android, Windows, Android Tablet, Linux and iPhone apps. The best EPUB Viewer Online alternative is SumatraPDF, which is both free and Open Source. Other great sites and apps similar to EPUB Viewer Online are calibre, Okular, Librera Reader and KOReader.

EPUB Viewer Online iconEPUB Viewer Online
  0
  • Free • Proprietary
  • ...

Online EPUB Reader.

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EPUB Viewer Online alternatives page was last updated May 15, 2025
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  1. SumatraPDF icon

    SumatraPDF

     1633 likes
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    This free, open-source viewer for Windows supports multiple formats like PDF, eBooks (ePub, Mobi), CHM, and Comic Books (CBZ, CBR). Prioritizing simplicity and speed, it offers a lightweight, portable design with a minimalist interface, catering to users seeking fast and efficient document viewing.

    108 SumatraPDF alternatives

    License model

    • Free • Open Source

    Application types

    Country of Origin

    • PL flagPoland
    • European Union flagEU

    Platforms

    • Windows
    SumatraPDF screenshot 1

    Properties

    1.  Lightweight
    2.  Optimal performance
    3.  Privacy focused

    Features

    1.  Low memory usage
    2.  Ad-free
    3.  Tabbed interface
    4.  Portable
    5.  Multi Format Reader
    6.  No registration required
    7.  Works Offline
    8.  Highlighter
    9.  PDF annotation
    10.  Global bookmarks
    11.  Dark Mode
    12.  Quick search

    SumatraPDF VS EPUB Viewer Online

     

    • SumatraPDF is the most popular Windows alternative to EPUB Viewer Online.

    • SumatraPDF is the most popular Open Source & free alternative to EPUB Viewer Online.

    • SumatraPDF is Free and Open SourceEPUB Viewer Online is Free and Proprietary
    • SumatraPDF is LightweightEPUB Viewer Online is not according to our users
  2. calibre icon

    calibre

     1443 likes
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    Free e-book manager with features including library management, format conversion, syncing to devices, internet-independent operation, built-in viewer, news download as e-books, text-to-speech, privacy focus, extensible plugins, and no registration or tracking.

    109 calibre alternatives

    License model

    • Free • Open Source

    Application types

    Country of Origin

    • CA flagCanada

    Platforms

    • Mac
    • Windows
    • Linux
    • BSD
    • Self-Hosted
    • Flathub
    • PortableApps.com
    • Homebrew
    calibre screenshot 1

    Properties

    1.  Customizable
    2.  Lightweight

    Features

    1.  Built-in e-Book converter
    2.  Book organization
    3.  Built-in viewer
    4.  Library Management
    5.  Batch conversion
    6.  Ebook Editor
    7.  Supports All Ebooks Format
    8.  DRM Free
    9.  E-book management
    10.  Book Manager
    11.  Metadata Editor
    12.  Ad-free

    calibre VS EPUB Viewer Online

     

    • calibre is the most popular Mac, Linux & Self-Hosted alternative to EPUB Viewer Online.

    • calibre is Free and Open SourceEPUB Viewer Online is Free and Proprietary
    • calibre is CustomizableEPUB Viewer Online is not according to our users
  4. Okular icon

    Okular

     457 likes
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    Multi-platform document viewer offering extensive format support, including PDF, comics, images, EPUB, and Markdown, with annotation tools, sidebar previews, text-to-speech, DRM management, cross-platform compatibility, and integration with KDE Frameworks libraries.

    112 Okular alternatives

    License model

    • Free • Open Source

    Application types

    Country of Origin

    • DE flagGermany
    • European Union flagEU

    Platforms

    • Windows
    • Linux
    • BSD
    • KDE Plasma
    • Snapcraft
    • Linux Mobile
    • Flathub
    • Haiku
    Okular screenshot 1

    Properties

    1.  Lightweight
    2.  Privacy focused

    Features

    1.  PDF annotation
    2.  Text Highlighting
    3.  Tabbed interface
    4.  Dark Mode
    5.  Ad-free
    6.  Low memory usage
    7.  KDE
    8.  Works Offline
    9.  Customizable shortcuts
    10.  Text to Speech
    11.  Fill PDF Forms
    12.  No Tracking

    Okular VS EPUB Viewer Online

     
  5. Ad
    Screenshot
    Epubor Ultimate icon
    Epubor Ultimate

    Convert eBooks into multiple formats like EPUB, PDF, or Mobi seamlessly, preserving original display. Edit metadata for personalization. Compatible with major e-Readers and apps like Kindle, Kobo, and Adobe Digital Editions, allo...

    https://www.epubor.com
    Learn More
  6. Librera Reader icon

    Librera Reader

     71 likes
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    Librera Reader is a highly customizable and feature-rich application for reading books in PDF, EPUB, MOBI, DjVu, FB2, TXT, RTF, AZW, AZW3, HTML, CBZ, CBR formats on Android devices.

    58 Librera Reader alternatives

    License model

    • Freemium • Open Source

    Application types

    Country of Origin

    • SK flagSlovakia
    • European Union flagEU

    Platforms

    • Android
    • Android Tablet
    • F-Droid
    Librera Reader screenshot 1

    Properties

    1.  Customizable
    2.  Lightweight
    3.  Privacy focused
    4.  Support for Themes

    Features

    1.  Ad-free
    2.  No Tracking
    3.  Text to Speech
    4.  Dark Mode
    5.  Works Offline
    6.  Auto Scrolling
    7.  Built-in File Manager
    8.  OPDS Client
    9.  No registration required
    10.  Full-Text Search
    11.  Ebook Conversion
    12.  Blue light filter

    Librera Reader VS EPUB Viewer Online

     

    • Librera Reader is the most popular Android & Android Tablet alternative to EPUB Viewer Online.

    • Librera Reader is Freemium and Open SourceEPUB Viewer Online is Free and Proprietary
    • Librera Reader is Customizable, Lightweight and Privacy focusedEPUB Viewer Online is not according to our users
  7. KOReader icon

    KOReader

     61 likes
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    An ebook reader application supporting PDF, DjVu, EPUB, FB2 and many more formats, running on Kindle, Kobo, PocketBook, Linux and Android devices.

    52 KOReader alternatives

    License model

    • Free • Open Source

    Application types

    Platforms

    • Linux
    • Android
    • AppImageHub
    • Kobo Books
    • Flathub
    • F-Droid
    • Kindle Fire
    • Android Tablet
    KOReader screenshot 1
    KOReader screenshot 2
    KOReader screenshot 3

    Properties

    1.  Lightweight

    Features

    1.  Built-in Dictionary
    2.  Ad-free
    3.  Dark Mode
    4. wallabag icon  Wallabag integration
    5. Wikipedia icon  Wikipedia integration
    6.  No Tracking
    7.  OCR
    8.  Portable
    9.  Full-Text Search
    10.  No registration required
    11.  Works Offline
    12.  PDF annotation

    KOReader VS EPUB Viewer Online

     
  8. Book's Story icon

    Book's Story

     27 likes
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    Material3 eBook reader - Book's Story. Built with Jetpack Compose. Free & Open Source & Ad Free. 4 supported file formats (.txt, .pdf, .epub, .fb2), 2 supported languages. Lots of customization.

    31 Book's Story alternatives

    License model

    • Free • Open Source

    Application types

    Platforms

    • Android
    • F-Droid
    Book's Story screenshot 1

    Properties

    1.  Lightweight
    2.  Privacy focused

    Features

    1.  Dark Mode
    2.  Ad-free
    3.  No registration required
    4.  Reading

    Book's Story VS EPUB Viewer Online

     
  10. Foliate icon

    Foliate

     52 likes
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    A simple and modern eBook viewer for Linux desktops.

    51 Foliate alternatives

    License model

    • Free • Open Source

    Application types

    Country of Origin

    • IT flagItaly
    • European Union flagEU

    Platforms

    • Linux
    • BSD
    • Snapcraft
    • Flathub
    Foliate screenshot 1

    Properties

    1.  Privacy focused
    2.  Support for Themes

    Features

    1.  Dark Mode
    2.  Built-in Dictionary
    3.  Text Highlighting
    4.  Export annotations
    5.  Text annotation
    6.  Works Offline
    7.  Full-Text Search
    8.  Ad-free
    9.  Text to Speech
    10.  No registration required
    11.  Flipping pages
    12.  Plain text flows

    Foliate VS EPUB Viewer Online

     
  11. FBReader icon

    FBReader

     217 likes
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    E-reader application.

    106 FBReader alternatives

    License model

    • Freemium • Proprietary

    Application types

    Country of Origin

    • RU flagRussia

    Platforms

    • Mac
    • Windows
    • Linux
    • Android
    • iPhone
    • Android Tablet
    • iPad
    FBReader screenshot 1
    FBReader screenshot 2

    Properties

    1.  Lightweight

    Features

    1.  No Tracking
    2.  No registration required
    3.  Dark Mode
    4.  Cloud Sync
    5. calibre icon  Calibre integration
    6.  Multiple languages
    7.  OPDS Client
    8.  iPhone/iPod sync

    FBReader VS EPUB Viewer Online

     

    • FBReader is the most popular iPhone & iPad alternative to EPUB Viewer Online.

    • FBReader is Freemium and ProprietaryEPUB Viewer Online is Free and Proprietary
    • FBReader is LightweightEPUB Viewer Online is not according to our users
  12. Amazon Kindle icon

    Amazon Kindle

     238 likes
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    The Kindle app puts millions of books, magazines, newspapers, comics, and manga at your fingertips.

    109 Amazon Kindle alternatives

    License model

    • Freemium • Proprietary

    Application types

    Country of Origin

    • US flagUnited States

    Platforms

    • Mac
    • Windows
    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    Amazon Kindle screenshot 1
    Amazon Kindle screenshot 2
    Amazon Kindle screenshot 3

    Amazon Kindle Features

    1.  Cloud Sync
    2.  Full-Text Search
    3.  Ad-free
    4.  Dark Mode
    5.  Ebook Cloud Sync
    6.  Progress tracking
    7.  Save progress
    8.  Synchronization

    Amazon Kindle VS EPUB Viewer Online

     

    • Amazon Kindle is the most popular Web-based alternative to EPUB Viewer Online.

    • Amazon Kindle is Freemium and ProprietaryEPUB Viewer Online is Free and Proprietary
  13. Openlib icon

    Openlib

     22 likes
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    Openlib is an open source app to download and read books from shadow library (Anna’s Archive). The App Has Built In Reader to Read Books.

    62 Openlib alternatives

    License model

    • Free • Open Source

    Application types

    Platforms

    • Android
    • F-Droid
    Openlib screenshot 1
    Openlib screenshot 2
    Openlib screenshot 3

    Properties

    1.  Support for Themes
    2.  Privacy focused

    Features

    1.  No registration required
    2.  Dark Mode
    3.  Ad-free
    4.  No Tracking

    Openlib VS EPUB Viewer Online

     
  14. Moon+ Reader icon

    Moon+ Reader

     93 likes
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    Innovative book reader with powerful controls & full functions.

    78 Moon+ Reader alternatives

    License model

    • Freemium • Proprietary

    Application types

    Country of Origin

    • CN flagChina

    Platforms

    • Android
    • Android Tablet
    Moon+ Reader screenshot 1
    Moon+ Reader screenshot 2
    Moon+ Reader screenshot 3

    Properties

    1.  Lightweight
    2.  Support for Themes

    Features

    1.  Text to Speech
    2.  Works Offline
    3.  Dark Mode
    4. Google Drive icon  Google Drive integration
    5. Dropbox icon  Dropbox integration
    6.  Built-in themes
    7.  Ad-free
    8.  Support for MarkDown
    9.  Cloud Sync
    10.  PDF annotation
    11.  No registration required
    12.  Full-Text Search

    Moon+ Reader VS EPUB Viewer Online

     
  15. ReadEra icon

    ReadEra

     54 likes
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    Read book files in EPUB, PDF, DOC, DOCX, RTF, TXT, DJVU, FB2, MOBI and CHM formats. Supports chapters, bookmarks, page style. Saves the current reading position. Automatic detection and display of the list of all supported documents on your device.

    71 ReadEra alternatives

    License model

    • Freemium • Proprietary

    Application types

    Country of Origin

    • US flagUnited States

    Platforms

    • Android
    ReadEra screenshot 1

    Properties

    1.  Educational

    Features

    1.  Dark Mode
    2.  Auto fetch album covers
    3.  Fullscreen support
    4.  Works Offline
    5.  Ad-free
    6.  No registration required
    7.  Text to Speech
    8.  Material design

    ReadEra VS EPUB Viewer Online

     
12 of 50 EPUB Viewer Online alternatives