So, today I needed to verify some YAML was correct, and eyeball the JSON output. I couldn’t find a good tool online that did what I wanted, so I wrote my own in about an hour.
I give you the Online YAML Parser.
It takes in YAML and outputs JSON using pyYAML. Simple, but useful. Try some examples from the 1.2 spec, or paste in your own, and let me know of any bugs.