20260318-0 JSON JSON 2013-10-02 2025-02-11 2006-07-01 JSON JavaScript Object Notation JSON is an open-standard file format that uses human-readable text to transmit data objects consisting of attribute–value pairs and array data types (or any other serializable value). It is a very common data format used for asynchronous browser/server communication. application/json .json JSON false JSON 2006-07-01 JSON true true true https://www.iana.org/assignments/media-types/application/json