Thorium Reader

7.0easy start · #8 of 27
in Ebook Reader Software

Free to practise onyes
Free trialnot on record
Well documentedyes
Runs where you workyes

Runs on iOS, Linux, Mac, Windows.

Thorium Reader is ranked #8 of 27 in ebook reader software on The Geeks Club. It runs on iOS, Linux, macOS, Windows. There is a free plan.

Thorium Reader plans and pricing

All plans

Thorium Reader Free Free on all platforms thoriumreader.com · 3 Oct 2026

Compared on ebook reader software

Free plan: Yes
Supported platforms: Windows, macOS, Linux, iOS, iPadOS
Supported formats: EPUB 2/3, Fixed Layout EPUB, PDF, DAISY 2.02/3, Web Publications
Annotation tools: Yes
Offline reading: Yes

Best Thorium Reader alternatives

See all 12

Readest 0 of 4 in the starter kit Lesson 17.6 Libby 0 of 4 in the starter kit Lesson 27.3 eBoox 0 of 4 in the starter kit Lesson 37.2 ReadEra 0 of 4 in the starter kit Lesson 47.2 Adobe Digital Editions 0 of 4 in the starter kit Lesson 57.0 Kobo Books 0 of 4 in the starter kit Lesson 67.0

The record

What it does: Thorium Reader is a digital book reader and library for ebooks, audiobooks, comics, manga and documents.
Reading controls: Readers can adjust text size, themes and spacing, choose from 10+ fonts, and use keyboard navigation with custom shortcuts.
Accessibility: The site lists support for JAWS, NVDA, Narrator and VoiceOver; its iOS accessibility statement also describes known VoiceOver limitations for EPUB and PDF reading.
Formats: The reader supports EPUB, fixed-layout EPUB, PDF, several audiobook formats including MP3 and FLAC, and comics in CBZ, EPUB or PDF.
DRM and retailers: It opens Readium LCP-protected publications and DRM-free publications from compatible retailers.
Libraries and free catalogs: It can read compatible Readium LCP library downloads and content obtained from Project Gutenberg, LibriVox and other public-domain or openly licensed sources.
Offline use: Downloaded publications can be read or heard offline; LCP-protected files require an online connection at least once.
Platforms and requirements: It is available for iOS/iPadOS, Windows, macOS and Linux; the site lists iOS/iPadOS 26, Windows 10, macOS 12 Monterey, Ubuntu 18.04, Fedora 32 or Debian 10 as minimum versions.
Desktop catalogs: The desktop app can add and browse OPDS catalogs, subject to the catalog provider’s options.
Desktop privacy and network use: The desktop specification says the app collects no personal data, while describing anonymized telemetry and version checks when network access is available.
Security assurances: The desktop specification says ISO 27001 and SOC 2 Type II assurances apply to content providers’ services, not to Thorium Reader itself.
Support: The maker links to a Help Desk and Discord; the desktop specification also points users to guides, a public issue tracker and support channels.
Who it is for: The desktop technical specification names the general public, with particular attention to heavy readers, library-goers and students.
Maker: Thorium Reader is developed by EDRLab, a Paris-based non-profit development laboratory created in 2015.
Price from: Free

Where it ranks on The Geeks Club

Best Ebook Reader Software in 2026#8 of 27

Is Thorium Reader yours?

Claim it for free: prove the domain, then correct facts, plans and screenshots. An editor reviews every change.

Claim it free Promote Thorium Reader

Sources

thoriumreader.com/en/· checked 3 Oct 2026
thoriumreader.com/en/legals/ios/accessibility-statement/· checked 3 Oct 2026
thoriumreader.com/en/download/· checked 3 Oct 2026
thoriumreader.com/en/legals/desktop/technical-spec/· checked 3 Oct 2026
edrlab.org/about/· checked 3 Oct 2026
thoriumreader.com· checked 28 Sept 2026