Apps
Postman
Built on Electron and Chromium, Postman keeps an on-disk HTTP resource cache and related browser-style cache entries under Cache_Data so the app can quickly reload packaged UI assets, fetched web content, and session resources between launches. On Windows it also stores a GPUCache with Chromium shader and rendering data used by hardware acceleration; Kudu removes these cache files when they become stale or oversized, without touching collections, environments, workspaces, sign-in data, or saved requests.
Why clean Postman?
- Stale Chromium disk cache entries can make parts of the Postman interface load old bundled assets after an app update, showing broken layouts, missing panels, or a slow first launch while the cache repopulates
- Corrupted Cache_Data records can leave the app stuck on a blank window or endlessly loading workspaces because Postman's Electron frontend keeps retrying bad cached resources
- An oversized browser cache wastes disk space in AppData or the user profile and can noticeably delay startup while Postman scans and prunes old cache entries
- Cached API documentation, images, and embedded web content can fail to refresh, so you keep seeing outdated visuals or incomplete pages until the local cache is cleared
- After a graphics driver update, invalidated Chromium GPU shader cache data in GPUCache can cause flickering, black areas, or choppy rendering until Postman rebuilds it
- Damaged hardware-acceleration cache files can trigger high GPU usage or laggy tab switching in collection and request views even though your actual collections and settings are intact
What gets cleaned
Cache paths Kudu targets
Windows
%AppData%/Postman/Cache/Cache_Data |
%AppData%/Postman/GPUCache |
macOS
~/Library/Application Support/Postman/Cache/Cache_Data |
Linux
~/.config/Postman/Cache/Cache_Data |
Frequently asked
Common questions about Postman
Related cleaners
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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.