Thorium Reader is the EPUB reader of choice for Windows 10 and 11, MacOS and Linux. This EDRLab application is in constant development and aims at becoming a reference for accessing EPUB 3 publications in reflow or fixed-layout format, audiobooks and visual narratives, PDF documents and DAISY 2.02 and 3 accessible ebooks, LCP protected or not. It is localised in a large set of languages, each version offering new locales. Massive efforts are also made to make Thorium Reader highly accessible for visually impaired and dyslexic people.
What's new in 3.5.1
Thorium Desktop reader version 3.5.1 was published on 02 September 2026.
Here are links to the "technical" changelogs: - https://github.com/edrlab/thorium-reader/blob/develop/changelogs/CHANGELOG-v3.5.1.md - https://github.com/edrlab/thorium-reader/compare/v3.5.0...v3.5.1 User-friendly release notes and a blog post are published on the https://www.thoriumreader.com website. Expand the 'Assets' section below to reveal the download links. - Note that the terms x64 and amd64 in the filenames refer to the Intel computer architecture (also sometimes known as x86_64, which includes both Intel and AMD chipsets). - The term arm64 refers to modern ARM hardware including Apple Silicon "M" computers. If in doubt: - Apple users should download the arm64 variant. - Windows / Linux users should download the x64 / amd64 variants, respectively. The application was built automatically on GitHub (Microsoft) servers. The build was recorded here: https://github.com/edrlab/thorium-reader/actions/runs/33608586429
