JSON does not provide a general serialization format.
It is not recurring or cyclical structures.
It is also not an invisible structure.
Disadvantages of JSON
Here are few advantages of JSON:
No namespace support, hence poor extensibility
Limited development tools support
No support for formal grammar definition
Popular JSON Tools (Add-ons)
Here are important JSON tools:
JSONLint is an open-source project that is used as a validator and reformatter for JSON. It is a lightweight data-interchange format. Copy and paste, directly type, or input URL in the JSON validator tool to validate your JSON code.