https://jsonlint.com/
JSONLint - The JSON Validator
JSONLint is the free online validator, json formatter, and json beautifier tool for JSON, a lightweight data-interchange format.
jsonlintvalidator
https://jsonlint.com/json-vs-yaml
JSON vs YAML - When to Use Each Format | JSONLint
A practical comparison of JSON and YAML. Learn when to use each format based on your use case, with conversion examples and common pitfalls.
when to usejsonvsyamlformat