Lately I have had to preview a lot of JSON files. Apple’s QuickLook is a great feature for that, but, unfortunately, the base OS X doesn’t come with any QuickLook plugin for JSON. After a quick search online I found a free plugin that works fairly well. Not only does it preview the contents of the file, it pretty prints and supports folding. So, here is my shout-out to quick look JSON
There is also a website, quicklookplugins.com, dedicated to QuickLook plugins.