JSON Formatter
Format, validate, and minify JSON data.
How to use this tool
- 1Paste your raw JSON into the input box.
- 2Click Format to pretty-print it with indentation.
- 3Click Minify to compress it onto a single line.
- 4Any syntax errors are shown immediately below the input.
Frequently asked questions
Is my JSON data uploaded anywhere?
No. Formatting and validation happen entirely in your browser, so your data never leaves your device.
Why does it say my JSON is invalid?
Common causes are trailing commas, single quotes instead of double quotes, or unquoted keys. The error message points to the problem location.