Slack Cache Folder (%AppData%\Slack\Cache)

Bottom Line: It is 100% safe to clear the Slack cache. Clearing the cache inside Slack or deleting the cache directory will not delete your messages, workspace channels, or uploaded files.

What is the Slack Cache Folder?

Located at %AppData%\Slack\Cache on Windows, ~/Library/Application Support/Slack/Service Worker/CacheStorage on macOS, or ~/.config/Slack/Cache on Linux, this directory is created by the Slack desktop client.

Like Discord and Teams, Slack runs on an Electron web runtime. It caches channel images, shared PDFs, avatars, custom emojis, and video clip thumbnails. As your workspace activity grows, Slack’s local cache slowly accumulates gigabytes of temp storage.

Can You Delete Slack Cache?

✅ Yes, it is completely safe to delete.

• Cloud-backed: All Slack messages, huddle recordings, files, and channels are stored on Slack’s cloud servers.
• Official Slack Help Fix: Clearing the cache is Slack’s official fix when messages fail to sync or images show as blank gray boxes.

How to Safely Clean Up Slack Cache

Method 1: Using Slack’s Built-in Clear Cache Option (Easiest)

1. Open the Slack app.
2. Click the Menu Icon (☰) at the top left (or click Help on Mac/Linux).
3. Go to Troubleshooting > Clear Cache and Restart.
4. Slack will restart automatically with a clean cache.

Method 2: Manual Deletion via File Explorer / Finder

If Slack won’t open:

# Windows (Command Prompt)
rmdir /s /q %AppData%\Slack\Cache

# macOS (Terminal)
rm -rf ~/Library/Application\ Support/Slack/Service\ Worker/CacheStorage

Related Guides

• Learn about deleting [Microsoft Teams Cache].
• How to clean up Discord Cache.
• Check if you can clean Browser Cache.