The official Internet media type for JSON is application/json. JSON filenames use the extension .json.
Douglas Crockford originally specified the JSON format in the early 2000s; two competing standards, RFC 8259 and ECMA-404, defined it in 2017. The ECMA standard describes only the allowed syntax, whereas the RFC covers some security and interoperability considerations.
- JSON is language independent.
- JSON is lightweight text-based interchange format.
- JSON is faster and easier than XML.