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JSON Formatter
Format, validate and minify JSON
What is a JSON Formatter?
Validates, formats, and beautifies JSON data - the universal data interchange format used in virtually all modern APIs.
How It Works
Parses raw JSON with JSON.parse() to validate syntax, then JSON.stringify() with indentation for human-readable output.
Example
Raw: {"name":"Riya","age":28}. Formatted (2-space indent): { "name": "Riya", "age": 28 }.
Pro Tips
- JSON keys must always be double-quoted - single quotes are not valid JSON.
- JSON.stringify(obj, null, 2) formats with 2-space indent programmatically in JavaScript.
- JSONL (one JSON object per line) is preferred for large datasets and log streaming.
- Use JSON Schema for API contracts to define types, required fields, and validation rules.
FAQ
What is JSON?▼
JavaScript Object Notation - lightweight text format for data exchange, universally supported.
Is trailing comma allowed?▼
No - trailing commas are invalid JSON and cause parse errors in most parsers.
JSON vs XML?▼
JSON is more compact, faster to parse, and native to JavaScript. XML supports schemas and namespaces.
Can JSON handle dates?▼
No native date type - store as ISO 8601 strings or Unix timestamps.