JSON Formatter & Validator
Format, validate and minify JSON instantly — free and no sign-up
Paste your JSON and get it formatted with syntax highlighting and real-time error validation. Minify with one click to reduce size. No data sent to any server.
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How it works
- 1Paste your JSON in the input field — it formats automatically.
- 2The validator detects syntax errors and points to the exact line of the problem.
- 3Use "Minify" to compress the JSON to one line and reduce its size.
- 4All processing happens in your browser. No data leaves your machine.
Frequently asked questions
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