A lightweight text format for sending structured data, the lingua franca of web APIs.
JSON is plain text built from objects ({"key": value}), arrays ([1, 2, 3]), strings, numbers, booleans, and null. That's the whole spec.
Despite the name (JavaScript Object Notation) it's language-neutral. Every modern language has a built-in parser.
Common gotchas: no comments, no trailing commas, all keys must be strings, no support for dates (use ISO 8601 strings).
Minimal JSON
{"name":"Ada","skills":["math","logic"]}JSON Formatter
Format, beautify, and minify JSON with error detection.
JSON Validator
Validate JSON syntax and display detailed error messages with line numbers.
JSON to CSV Converter
Convert a JSON array of objects to downloadable CSV format with configurable delimiters.
JSON Path Finder
Navigate JSON data and find JSONPath expressions for any value. Filter and explore nested structures.