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Thorium

by EDRLabv3.5.1

Last updated

A cross platform desktop reading app, based on the Readium Desktop toolkit

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Install with winget

$ winget install --id EDRLab.Thorium --exact --version 3.5.1

Run in Command Prompt, PowerShell, or Windows Terminal. Prompts for any agreements.

Silent install command for Thorium

Thorium uses EXE (NSIS). The silent install switches are /S.

One-line silent install (x64, user scope)
Thorium-3.5.1-x64.exe /S /currentuser

See the full silent install reference for Thorium →

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About

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.

Installers · v3.5.1

ArchitectureTypeScopeInstallDownload
x64EXE
NSIS
userDirect
x64EXE
NSIS
machineDirect
arm64EXE
NSIS
userDirect
arm64EXE
NSIS
machineDirect

Copy a command tailored to that specific architecture, type, and scope - useful when winget would otherwise pick a different default.

Security

1 known CVE via NVD

  • high7.1Patched in wingetCVE-2025-63365affects v1.0.0.0Dec 1, 2025

    SoftSea EPUB File Reader 1.0.0.0 is vulnerable to Directory Traversal. The vulnerability resides in the EPUB file processing component, specifically in the functionality responsible for extracting and handling EPUB archive contents.

Source: NVD, updated 4h ago. Patch status is best-effort: NVD's fix version is compared against the latest version in winget, but the two version formats don't always align. Confirm with the vendor advisory before treating any specific build as safe.

See a CVE that affects your fleet? Push the patched version to Intune in one click with Pckgr.

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More from EDRLab or browse ebook, ebook-reader, epub.

Frequently asked questions

How do I install Thorium on Windows?
Open Windows Terminal, PowerShell, or Command Prompt and run: winget install --id EDRLab.Thorium --exact --version 3.5.1. winget downloads the installer from EDRLab and runs it. Requires Windows 10 (1809+) or Windows 11.
How do I install Thorium silently for unattended deployment?
Add --silent and accept the agreements upfront: winget install --id EDRLab.Thorium --exact 3.5.1 --silent --accept-package-agreements --accept-source-agreements. This is the variant Intune, Configuration Manager, and other deployment tools should use.
What are the silent install switches for Thorium?
Thorium uses EXE (NSIS). Run the downloaded installer with: Thorium-3.5.1-x64.exe /S /currentuser. The silent switches are /S.
How do I uninstall Thorium via winget?
Run: winget uninstall --id EDRLab.Thorium --exact. Add --silent for unattended uninstalls. winget will use the registered uninstaller from Thorium's Apps & Features entry.
Is Thorium free?
Thorium is distributed under BSD-3-Clause. Refer to the publisher (https://www.edrlab.org/software/thorium-reader/) for the full license terms - Wingetly itself does not charge for installation.
Does Thorium work on Windows 10?
Yes, as long as your Windows 10 build supports winget (1809 or newer). winget ships with App Installer on Windows 10/11 and pulls Thorium directly from the publisher.
How do I keep Thorium up to date?
Run winget upgrade --id EDRLab.Thorium --exact, or winget upgrade --all to update everything winget tracks. We index 10 versions of Thorium from microsoft/winget-pkgs.

Recent versions

  • 3.5.1latest
  • 3.4.0
  • 3.3.0
  • 3.2.2
  • 3.2.1
  • 3.1.0
  • 3.0.0
  • 2.4.2
  • 2.4.1
  • 2.4.0