Example JSON should prettyify and the url should be clickable.
So Safari 12 changed its extensions format. I had a plugin that worked to pretty print JSON but now it won't work.
While there were a few JSON Pretty Print extensions in the store already, I decided to make another...couldn't hurt right? Plus I can add stuff I want. Plus it's free and open source.
Also, community contributions are welcome. File an issue to discuss and send a pull request.
Right now a few things are needed (see the issues).