Thorium (SSE4)

Thorium (SSE4) 156.0.8078.28

Chromium fork for Linux, Windows, macOS, Android, and Raspberry Pi named after radioactive element No. 90.

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About Thorium (SSE4)

Chromium fork for Linux, Windows, macOS, Android, and Raspberry Pi named after radioactive element No. 90.

What's new in 156.0.8078.28

Hello everyone, I am gz83, a collaborator on the Thorium browser project. Since Alex is currently unavailable to update Thorium, I have temporarily taken over the task, and this release is a major update to the stable version of M156. The code is available here:
https://github.com/gz83/thorium
I think the current version is quite stable, and I'm only marking it as BETA because it hasn't been officially released by Alex yet.
Welcome to use Thorium. Please submit any issues you encounter in the main Thorium repository using the issue template:
https://github.com/Alex313031/thorium/issues
Here are the release notes for this release:
(Due to space limitations, not all changes are fully summarized.)
Updated Chromium from 154.0.8037.45 to 156.0.8078.28.
Thorium highlights
- Updated bundled uBlock Origin to 1.75.0, retaining offline installation for new profiles.
- Improved icon switching across the browser UI and WebUI. Thorium icons now use separate resources, preserving Chromium's rounded and legacy icons when --disable-thorium-icons is used.
- Updated Android extensions and on-device DevTools for M156, including a fix for the missing extension-feature declaration that caused Android compilation errors.
- Adapted the legacy download shelf to Chromium's updated active-content view API.
- Fixed V8 snapshot dependencies for Windows SSE2 installer packaging and macOS framework resources, resolving GN generation errors encountered during cross-compilation.
Chromium highlights
- JPEG XL decoding is enabled by default, using the Rust-based decoder with support for progressive images, HDR and animation.
- Expanded CSS support, including symbols(), margin-trim, random() and :navigation-source, for custom counters, cleaner layouts and navigation feedback.
- More capable JavaScript modules: import text directly with with { type: "text" }, and retry module fetches after network failures instead of permanently caching those failures.
- Expanded WebCrypto algorithms, adding ML-KEM, ML-DSA, X-Wing and ChaCha20-Poly1305.
- Inherited upstream stability and memory-safety fixes, including a dangling-reference fix in DOM attribute cloning.

Full release notes »

Technical details

PublisherThe Thorium Authors
AuthorAlex313031
Version156.0.8078.28
Release date2026-10-11
LicenseBSD-3-Clause
Installer typeexe
Architecturex64
Package IDAlex313031.Thorium.SSE4
Install scopeCurrent user

Install Thorium (SSE4) from the command line

Install with Windows Package Manager
winget install --id=Alex313031.Thorium.SSE4 -e
Update to the latest version
winget upgrade --id=Alex313031.Thorium.SSE4 -e
Uninstall
winget uninstall --id=Alex313031.Thorium.SSE4 -e
Silent install with the offline installer
"thorium_SSE4_mini_installer.exe" --silent --do-not-launch-chrome

Silent install switches for more Windows programs »

Install Thorium (SSE4) together with other apps in one command »

browserchromiuminternetwebwebpage

File types supported by Thorium (SSE4)

Thorium (SSE4) can open or be associated with 8 file types:

.htm.html.pdf.shtml.svg.webp.xht.xhtml

Frequently asked questions

Is Thorium (SSE4) free?

Yes. Thorium (SSE4) is free and open-source software released under the BSD-3-Clause license.

What is the latest version of Thorium (SSE4)?

The latest version is 156.0.8078.28, released on Oct 11, 2026.

Is it safe to download Thorium (SSE4)?

The download button links to the official installer published on github.com, the same file Windows Package Manager installs. You can verify the downloaded file by comparing its SHA-256 checksum with 8b0de8907ec3f14e26e16914e93cca3a9a23de08ee6958c4a01ab6c6acf00062.

Which Windows versions does Thorium (SSE4) support?

Thorium (SSE4) runs on Windows and is available for 64-bit (x64) systems.

How do I install Thorium (SSE4) silently?

Run the offline installer with "thorium_SSE4_mini_installer.exe" --silent --do-not-launch-chrome, or install it with Windows Package Manager: winget install --id=Alex313031.Thorium.SSE4 -e --silent.

How do I uninstall Thorium (SSE4)?

Open Settings › Apps › Installed apps, find Thorium (SSE4) and select Uninstall. From the command line, run winget uninstall --id=Alex313031.Thorium.SSE4 -e.

What file types can Thorium (SSE4) open?

Thorium (SSE4) supports 8 file types, including .htm, .html, .pdf, .shtml, .svg, .webp, .xht, .xhtml.