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Slack, Discord, Teams & the Electron cache pile

CacheCleaner guides · Updated July 18, 2026

Every Electron app ships a whole Chromium – and every Chromium keeps its own cache. Media from every Slack workspace, every Discord GIF, every Teams call artifact stays on disk until you clear it. 1-5 GB per app is typical.

Where they hoard

~/Library/Application Support/Slack/Cache
~/Library/Application Support/Slack/Service Worker/CacheStorage
~/Library/Application Support/discord/Cache
~/Library/Application Support/Microsoft/Teams   # classic Teams
~/Library/Caches/com.spotify.client
~/Library/Application Support/Spotify/PersistentCache

Safe to delete?

Yes – with the apps quit. These are download caches: images, video previews, code bundles. The apps re-fetch on demand; you lose nothing but offline copies of already-seen media. Don't touch the neighbouring Local Storage / IndexedDB folders if you want to stay logged in.

Spotify deserves a special mention

Its PersistentCache holds streamed tracks and grows to a configurable cap most people never configured – check Settings → Storage in the app, or clear the folder.

Browsers: same story, bigger folders

~/Library/Caches/Google/Chrome
~/Library/Caches/Firefox
~/Library/Caches/company.thebrowser.Browser   # Arc

Pages load slower on first visit after clearing – that's the entire cost.

CacheCleaner's App Caches and Browser Caches sections cover Slack, Discord, Telegram, Teams, Zoom, Spotify and every major browser – cache folders only, never your logins or messages.

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