macOS

Quicklook plugins

Intro

Quick Look is a quick preview feature developed by Apple for the OS X system. It was introduced in Mac OS X 10.5 Leopard. By default the feature can be used by selecting a file and pressing the space bar.

Quick Look is also used to generate image thumbnails for files in Finder.

But some types of extensions do not have a build-in quicklook plugin, for instance MKV (matroska video) files don't have a build-in quicklook plugin, because of this Finder won't display thumbnails and quicklook won't load the video. Another example is markdown files, by default the system cannot quicklook the file.

Without the plugin

With the plugin

How to install

Just copy the .qlgenerator plugin file to the ~/Library/QuickLook and restart Finder, or logout and log back in.

To restart Finder without logout open Terminal and type:

killall Finder

Then reopen Finder by clicking the Finder icon in the Dock.

Some Plugins: