How can I turn off quick look on MacOS Catalina? On Mac if you select a file and press the space bar on your keyboard, you can see a quick look of the file.
Is there any way to disable this feature on Mac?
Is there a terminal command or a system tool that can disable Quick-Look on Mac?
Try
sudo launchctl unload -w com.apple.quicklook.plist

I don't know whether you will have to disable SIP to do this, or even if it's possible since Catalina [&amp; can't test].
Found on Apple Forums - https://discussions.apple.com/thread/2582860