Developer
JSON Formatter
Format, validate, and beautify JSON instantly.
About this tool
Paste minified or messy JSON to get a clean, indented, syntax-highlighted version — with instant validation errors if your JSON is malformed.
How to use it
- 1Paste your raw or minified JSON into the input box.
- 2The formatted, indented version appears automatically.
- 3Copy the result or fix any validation errors shown.
Frequently asked questions
No. Formatting and validation happen entirely in your browser, so your data never leaves your device.
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