Read It Your Way

More than a reading app, a new home for all your ebooks, audiobooks, comics and manga.

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Two phones side by side showing Thorium Reader: one displaying the Dracula audiobook cover, the other showing the reading interface with a passage from Jonathan Harker's Journal.

Your Books, Your Rules

With Thorium Reader, you can switch between reading or listening whenever you want… or even do both at the same time.

Take full control of your reading experience with easy to use, yet powerful, user settings.

Three phones showing Thorium Reader's themes: a sepia view, a light view with the display settings panel open, and a dark view.

Bring Your Own Books

We built a place where all books are welcome.

Download on the Web, borrow from a library, buy from a bookstore… but read them all in Thorium Reader.

A laptop displaying Thorium Reader Desktop. The library shows all publications as a grid; you can search it and import a new publication. Each book displays its cover with the title and author name below, followed by the format and options.

Join the Adventure!

Thorium Reader is completely free and maintained by a non-profit organization.

Available on iOS, iPadOS, Windows, macOS and Linux.

Download the app
A laptop showing Thorium Reader with an open ebook and a comic, alongside a phone showing the Dracula audiobook.

Frequently Asked Questions

Is Thorium Reader free?

Yes, Thorium Reader is free on all platforms.

It's developed by EDRLab (European Digital Reading Lab), a non-profit association dedicated to open standards, literacy and accessibility.

With Thorium Reader, we contribute directly to the development of Readium toolkits, used by hundreds of reading applications.

Which devices are compatible with Thorium Reader?
  • If you own an iPhone or an iPad, Thorium Reader can run on any device running at least iOS/iPadOS 26
  • On Windows, it requires Windows 10 and up
  • On macOS, it requires macOS 12 Monterey and up
  • Finally on Linux:
    • Ubuntu 18.04 and up
    • Fedora 32 and up
    • Debian 10 and up
Which file formats are compatible with Thorium Reader?

Ebooks

  • EPUB (.epub)
  • Fixed Layout EPUB (.epub)
  • PDF (.pdf)

Audiobooks

  • Readium Audiobooks (.audiobook)
  • MP3 (.mp3)
  • MP4 (.m4a and .m4b)
  • FLAC (.flac)
  • WAV (.wav)
  • AAC (.aac)

Comics and Manga

  • CBZ (.cbz)
  • Fixed Layout EPUB (.epub)
  • PDF (.pdf)
Can I open DRM protected files with Thorium Reader?

Yes, as long as they use Readium LCP, an interoperable ISO standard for DRM.

Readium LCP protected files use a license file (with an .lcpl file extension) that's compatible with EPUB, PDF or Readium Audiobooks.

Can I use Thorium Reader offline?

Yes, as long as you're reading or listening to publications that you've downloaded rather than streamed.

To read LCP protected files, Thorium Reader needs an online access at least once, but it doesn't require a connection after that.

Can I buy ebooks, audiobooks, comics or manga from a retailer?

Yes, Thorium Reader is compatible with any retailer that sells Readium LCP protected or DRM free publications.

Check our support page to explore a list of retailers that you can buy content from and read in Thorium Reader.

Can I borrow ebooks, audiobooks, comics, manga, newspapers or magazines from a library?

Yes, as long as your library uses Readium LCP to protect these downloads using a format compatible with Thorium Reader.

In the future, we'll also embed a list of libraries directly in our app, making it easier to browse, search, place a hold and borrow.

Can I download free content with Thorium Reader?

Yes, Thorium Reader is fully compatible with Project Gutenberg, Librivox and many other sources that you can download public domain or open licensed content from.

In the future, we'll also embed a number of them directly in our app, to make it easier to download free ebooks and audiobooks.