JSON Formatter & Validator
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Validate and format JSON
Paste JSON – for example from an API response or configuration file. The tool checks the syntax in real time, formats it neatly with indentation at the press of a button, or minifies it for compact use. Everything runs in the browser via the native JSON parser; nothing is sent.
- Format: Cleanly indents the JSON with 2 spaces (pretty-print).
- Minify: Removes all whitespace and line breaks – ideal for transmission.
- Common errors: Trailing commas and single quotes are not allowed in JSON – only double quotes.