The first screen you see after launching Thorium is the Bookshelf. The user interface is very simple, can be accessed with the keyboard using the TAB key and keystrokes. The Thorium UI consists of the Bookshelf and the Reader views. Nightly builds of the Windows 10, MacOS and Linux versions can be downloaded from the Readium Github platform. The Thorium download links for Windows, MacOS and Linux is maintained on the EDR Lab website The information about latest version of Thorium Reader can be seen on EDR Lab website. Thorium supports publications in all languages and the Thorium user interface is available in 13 different languages. Other accessibility features include support for high-contrast, customizable font including dyslexia font), color themes, text size and Text To Speech (TTS) read aloud. It is fully usable with keyboard alone and supports navigation and reading with popular screen readers like JAWS, NVDA, Narrator and Voiceover. Thorium is accessible for visually impaired and dyslexic people.

Thorium contains many features required for ebook reading such as table of contents, page navigation, bookmarks, annotations/highlights, text search, single page scrolling mode, two page layout, navigation using print page breaks, Table of Contents or scroll bar. It supports EPUB 3 (both reflow and fixed layout), DAISY 3, and PDF documents. Thorium Reader is a free and open source reading app for Windows 10, MacOS and Linux.

Epub reader desktop