An up-to-date Chromium-based web browser compatible with Windows XP, 2003, Vista, 7 and 8.x.
The Supermium web browser also provides the following features:
Aero Glass and Aero Glass-style titlebars instead of Windows 10-style ones (#force-xp-theme in chrome://flags for the latter)
Turnaround for major vulnerability patches generally less than one week from upstream disclosure
A functional sandbox for enhanced security
Google Sync
On Windows 7 and up, Widevine CDM support for viewing DRM content
GDI font rendering, using #force-gdi in chrome://flags
Persistent dark mode on the browser's UI elements, using #force-dark-mode in chrome://flags
Custom tab options including trapezoidal tabs, transparent tabs, and outlined tabs
Many flags from ungoogled-chromium
Support for SSE2-only processors in the 32 bit build
Future support for: - Windows 2000 - Ungoogled Chromium features (in progress) - WebGPU for D3D9 renderer - Manifest V2 (once removed by Google) ...and more! If there's a feature you want, which cannot be replicated by a Manifest v2/v3 extension, please ask!
What's new in 144.0.7559.247 R2
This release of Supermium primarily fixes: - the issue with displaying PDF documents on Windows Vista and 7 (#2073, #2072, #2058) - a small fix for some systems being unable to set Supermium as default application for various protocols/file types (#2063) However, a solution for occcasional process failures on some Windows XP systems is still being worked on.
Yes. Supermium is free and open-source software released under the BSD-3-Clause license.
What is the latest version of Supermium?
The latest version is 144.0.7559.247 R2, released on Oct 21, 2026.
Is it safe to download Supermium?
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 e11192d87300a652854c3b28c1290a730509e5ad3c7c096579859dad6139b9cb.
Which Windows versions does Supermium support?
Supermium runs on Windows and is available for 32-bit (x86), 64-bit (x64) systems.
How do I uninstall Supermium?
Open Settings › Apps › Installed apps, find Supermium and select Uninstall. From the command line, run winget uninstall --id=win32ss.Supermium -e.
