Fix Guide: Tahoe Safari Web Inspector Crash
Symptom: Safari on macOS Tahoe crashes instantly when opening the Web Inspector (cmd+opt+i) or trying to inspect elements on complex web apps.
Why this happens
A conflict between Tahoe's new GPU acceleration for developer tools and certain legacy WebKit cached preferences.
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Fix 1: Clear Safari Global Preferences
- Quit Safari.
- Open Terminal.
- Run the following command:
defaults delete com.apple.Safari WebKitDeveloperExtrasEnabledPreferenceKey
- Relaunch Safari.
Fix 2: Reset WebKit Cache
- In Terminal, run:
rm -rf ~/Library/Containers/com.apple.Safari/Data/Library/Caches/com.apple.Safari.SafeBrowsing
- Restart your Mac.
Recommended Tool: Dash
If you do a lot of dev work on macOS:
- Get Dash for offline documentation and snippet management to reduce reliance on Inspector for repeated lookups.