JSON Formatter & Validator
Paste any JSON to pretty-print it, minify it for production, or find out exactly where the syntax is broken. Everything runs locally in your browser, so API keys and customer data never leave your machine.
How to use the JSON Formatter & Validator
- 1Paste your JSON into the input box.
- 2Choose beautify, minify or sort keys.
- 3Copy the formatted result or fix the error highlighted in the message.
JSON Formatter & Validator FAQ
No. Formatting and validation run entirely in your browser with JavaScript.
The most common causes are trailing commas, single quotes instead of double quotes, unquoted keys and missing brackets. The error message shows the position of the problem.
Formatting adds indentation so humans can read it. Minifying removes all whitespace to reduce payload size for production APIs.