1. Kill the running process (temporary)
ps aux | grep SpotlightIndexExtension
kill -9 <PID>
- The process will restart when Spotlight or the Podcasts app needs it again.
- This is only a temporary stop.
2. Disable Podcast indexing in Spotlight
If you just want to stop it from constantly running, tell Spotlight not to index Podcasts:
sudo mdutil -i off /System/Volumes/Data/Users/$(whoami)/Library/Group\ Containers/*.group.com.apple.podcasts
You can also exclude Podcasts completely in System Settings → Siri & Spotlight → Search Results, then uncheck Podcasts.
3. Workaround: Restrict Spotlight scope
Add Podcasts’ data folder to Spotlight’s Privacy tab:
- Go to System Settings → Siri & Spotlight → Spotlight Privacy.
- Add:
~/Library/Group Containers/*.group.com.apple.podcasts
This stops indexing there, so the extension has little/no work to do and won’t spin up often.