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JSON extensions ​

JSON itself is a standardized format, and its structure is well-defined. However, there are some extensions, variations, or related formats that build upon or complement JSON in various ways. Here are a few notable ones:

  • JSON Lines (JSONL): JSON Lines is a convenient format for storing multiple JSON objects in a single file, with each JSON object on a separate line. This format is commonly used for streaming large datasets or logs, as it allows for easy parsing line by line.

  • JSON5: JSON5 is a superset of JSON that allows additional syntax features not supported in standard JSON. It adds support for comments, trailing commas in arrays and objects, single-quoted strings, and more. JSON5 aims to make JSON more human-readable and developer-friendly.

  • JSON Schema: JSON Schema is a vocabulary that allows you to annotate and validate JSON documents. It provides a way to describe the structure, format, and constraints of JSON data, enabling automated validation and documentation generation. JSON Schema is commonly used in API development and data validation scenarios.

  • MessagePack: MessagePack is a binary serialization format that is more compact and efficient than JSON. While it's not a direct extension of JSON, it's often used as an alternative serialization format in scenarios where performance and bandwidth efficiency are critical.

  • CBOR (Concise Binary Object Representation): CBOR is another binary serialization format similar to MessagePack but standardized by the Internet Engineering Task Force (IETF). Like MessagePack, it's more compact and efficient than JSON and is commonly used in constrained environments such as IoT devices and network protocols.

  • JSON Merge Patch: JSON Merge Patch is a format defined in RFC 7386 that describes how to update a JSON document by sending a patch containing the changes rather than the entire document. It's commonly used in HTTP PATCH requests to apply partial updates to JSON documents.

  • JSON Pointer: JSON Pointer is a simple syntax for referencing specific parts of a JSON document. It's defined in RFC 6901 and is commonly used in conjunction with other formats like JSON Patch and JSON Merge Patch for specifying the location of changes or operations within a JSON document.