Supermium
Built on Chromium, Supermium writes the same kinds of browser cache data as other Chromium-based browsers: HTTP disk cache entries, Code Cache bytecode for JavaScript and WASM, GPUCache shader and rendering data, Service Worker caches, and temporary network storage used to speed up page loads and web apps. When those files become stale, oversized, or invalid after a browser or graphics driver change, pages can render incorrectly, media can fail to load, and startup or tab switching can feel sluggish; Kudu removes these disposable caches while leaving bookmarks, saved passwords, history, cookies, profiles, and other personal browser data alone.
Why clean Supermium?
- Corrupted HTTP disk cache entries can make sites load old CSS or JavaScript, so pages appear broken, unstyled, or stuck in a reload loop until the cache is rebuilt
- Invalidated Code Cache bytecode after a Supermium update can cause slow first launches of complex sites, with tabs briefly freezing while Chromium recompiles scripts
- Stale GPUCache data from a graphics driver update can trigger black pages, flickering video, or WebGL glitches because old shader data no longer matches the current driver
- Oversized Service Worker and Cache Storage data can keep offline copies of sites long after they changed, leading to web apps showing outdated content or failing to sync correctly
- A bloated media and image cache can waste multiple gigabytes and cause avatars, thumbnails, or embedded video previews to load inconsistently when cache eviction starts thrashing
- Damaged network cache index files can make downloads restart unexpectedly or pages stall at partial load states even though the internet connection itself is fine
Cache paths Kudu targets
Windows
%LocalAppData%/Supermium/User Data |
macOS
~/Library/Application Support/Supermium |
Linux
~/.config/supermium |
Common questions about Supermium
Download Kudu and reclaim your disk space.
Available on Windows, macOS, and Linux. No account required, no feature gates, no telemetry without consent. All cleaning targets are open source and community-auditable.