JSON Formatter & Validator
Prettify, validate, tidy, and minify JSON data with instant error check.
How to use this tool & FAQs
Click any question below to expand its guide and answer
Precision stays in your text
The formatter validates strict JSON, then formats whitespace without reconstructing numbers or object keys. Large integer literals, exponent notation, negative zero, duplicate keys and their order remain as written. Comments and trailing commas are rejected.