Solving broken Quick Look on some file extensions in Monterey

Marco T wrote:

I had the same issue other users already described with Quick Look since I upgraded to Monterey.

In my case, the quick view showed a low-res info view for PDF, jpeg and png files, whereas it worked normally with some other extensions (i.e. docx, xlsx, txt, ...).

My Extensions configuration page didn't show a quick view item to check.

Anyway, to fix the problem it was sufficient for me to go to my user's ~/Library/Preferences and delete the file named "com.apple.preferences.extensions.QuickLook.plist"; then I restarted Finder and my Quick Look feature restarted working perfectly.

Just sharing this as I couldn't find a similar solution posted in the other threads (tried to post a reply there but replies are disabled).

Quick look feature - Apple Community

What is this exactly ..."My Extensions configuration page" (?)

There is a quicklook reset command...from the Terminal.app:

qlmanage -r

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