New answers tagged quicklook
Run brew cask install quicklook-json to Preview JSON files. There are bunch of other usefull here, check following awesome list https://github.com/sindresorhus/quick-look-plugins Or install with following brew install caskroom/cask/brew-cask brew cask install qlcolorcode qlstephen qlmarkdown quicklook-json qlprettypatch brew cask install quicklook-csv ...
It is not quicklook that is trying to generate previews on its own, it is Finder that triggers it when you access that (and any other) folder on any mounted drive. When in the folder, open Finder / View / Show View Options (shortcut Cmd+J), deselect Show Icon Preview and click Use as Defaults. That information is stored in the .DS_Store file in each folder.
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