Beautify, minify, and validate JSON online. Runs entirely in your browser; nothing is uploaded.
Paste any JSON document to instantly validate its syntax and pretty-print it with 2-space indentation, or minify it down to a single line. If your JSON is invalid, the error message will tell you exactly what went wrong. All processing happens locally in your browser using the standard JSON.parse/JSON.stringifyAPIs. Nothing you paste is ever sent to a server.
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JSON Formatter & Validator formats raw JSON into readable structures and highlights syntax errors instantly. Processing runs locally in your browser so sensitive data remains private.
Input: {"name":"Innealan","tools":129} Output: { "name": "Innealan", "tools": 129 }
The validator parses the JSON string using standard JSON specifications and reports line and column error positions.
No. Formatting adjusts whitespace and indentation while preserving original key order and data types.