JSON Formatter
Paste messy JSON and get clean, indented, valid output — or minify it for production. Syntax errors are reported with the exact position, and keys can be sorted alphabetically.
FAQ
Is my JSON sent to a server?
No — parsing and formatting happen entirely in your browser.
It says my JSON is invalid — why?
Common causes: trailing commas, single quotes, unquoted keys or comments. The error message shows the exact character position.
Can I sort object keys?
Yes — enable “sort keys” to alphabetize all object keys recursively.