Hearthglen
Built on Electron, Hearthglen stores several Chromium runtime caches under its Windows profile to speed up the app shell and web-based interface. These include HTTP disk cache files in Cache_Data, V8 compiled JavaScript bytecode in Code Cache, GPU resource caches in GPUCache, DawnGraphiteCache and DawnWebGPUCache for Chromium's graphics pipeline, and Shared Dictionary cache data used to decompress dictionary-compressed web content. Kudu removes only those regenerable caches when they become oversized or stale, without touching your account, saved settings, or Hearthglen content.
Why clean Hearthglen?
- Stale V8 bytecode in Code Cache after a Hearthglen update can no longer match the shipped JavaScript, causing an unusually slow first launch, delayed window rendering, or repeated UI hitching until the cache is rebuilt
- Corrupted Cache_Data entries can make Hearthglen keep serving outdated web assets, which shows up as missing interface elements, pages that never finish loading, or a client that looks partially broken after an update
- GPUCache often becomes invalid after a graphics driver update, and old Chromium GPU state can lead to black panes, flickering panels, or rendering glitches that disappear once the cache is regenerated
- Obsolete DawnGraphiteCache and DawnWebGPUCache shader and pipeline blobs can cause stutter during startup animation or when opening hardware-accelerated views, especially after driver changes or app upgrades
- A bloated Shared Dictionary cache can preserve bad compression dictionaries for previously fetched content, leading to odd loading failures, incomplete text, or repeated retries while Hearthglen re-downloads fresh assets
- When Electron's disk caches grow too large, Hearthglen may consume hundreds of megabytes for temporary web resources, and users typically notice reduced free space along with no improvement in launch speed
- If cached assets from one release conflict with resources from the next, Hearthglen can get stuck showing an old shell or half-updated screens, and clearing the caches forces a clean fetch of current files
Cache paths Kudu targets
Windows
%AppData%/hearthglen/Cache/Cache_Data |
%AppData%/hearthglen/Code Cache |
%AppData%/hearthglen/GPUCache |
%AppData%/hearthglen/DawnGraphiteCache |
%AppData%/hearthglen/DawnWebGPUCache |
%AppData%/hearthglen/Shared Dictionary/cache |
Common questions about Hearthglen
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.