ePub Reader a powerful and easy-to-use ePub reader
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The "ePub Reader" extension is meant to eliminate the need for native ePub readers. This browser extension opens *.epub and *.opf files right in your browser tab. After installation, you will get a new context menu entry in the browser context menu when a link with *.epub or *.opf extension is selected. Clicking on this menu results on opening the selected link in a new browser tab. This extension uses the "Reader View" style for displaying the ePub content. Basically, the user has access to all the options that normally get when using a reader view. The 3 default color schemes (light, dark and sepia) are supported. Font family can be altered and font-size is adjustable. All these options are persistent across browser restarts. Furthermore, this extension saves the current ePub address as well as the current page number in the address bar so that the page's URL is bookmarkable.



  1. What is the "ePub Reader" add-on and how can I use it?

    The ePub Reader extension is an alternative to the desktop ePub readers. This reader can parse and display online ePub links in a user-friendly environment. The UI is based on the "Reader View" implementation to reduce distraction and provide a convenient view for long reads. The extension offers three color schemes and font selection tools. The user even can change the font-size and line-height right from the view. If more customization is required, the options page can be used to inject custom CSS rules. This extension displays the table of contents in the bottom left side of the view and arrow keys can be used to change pages.

  2. recommended "Spoof Geolocation" extension for Chrome, Edge and Firefox browsers

    This extension alters the reported GEO location by your browser. You can provide your custom latitude and longitude to any website to improve privacy or get localized data from a custom location. This extension is also useful if you have a SOCKS proxy on your browser to have a consistent IP address with the GEO data. Read more here.

  3. What's new in this version?

    Please check the Logs section.

  4. Can I use the scroll-bar to navigate to the next or previous pages

    At this moment this is not doable. Note that in this extension to have high performance, only a single page is parsed and being displayed. The arrow keys can be used to move to the next or previous pages. If you need to jump to the start of a chapter, use the "Table of Contents" menu in the left bottom side of the view. The user also can use the visual navigation buttons to move the previous and the next pages.

  5. Can I close the current view and read this eBook later?

    This extension keeps the current eBook address as well as its current page number in the address bar URL, so simply press the star button to bookmark the page. Next time this bookmark is opened, the extension automatically fetches the eBook from your browser cache and opens the current page.

  6. Why do I get a permission box each time I try to open an ePub with this extension?

    By default this extension does not have permission to read any external resource. Each time a new ePub is requested, the extension needs to grant permission to download the eBook first.

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What's new in this version

Change Logs:
    Last 10 commits on GitHub
    Hover over a node to see more details

    Need help?

    If you have questions about the extension, or ideas on how to improve it, please post them on the  support site. Don't forget to search through the bug reports first as most likely your question/bug report has already been reported or there is a workaround posted for it.

    Open IssuesIssuesForks

    Permissions are explained

    storageto keep user preferences such as the current color theme or the font-family that is used
    contextMenusto add context menu to the browser's link context
    notificationsto be able to display desktop notifications in case an error occurs
    chrome://favicon/to change the favicon of the eBook to the domain's favicon for easy detection

    Recent Blog Posts on add0n.com