JSON Formatter

How to use the JSON Formatter

1. Paste your JSON into the editor.
2. Press Format / Beautify.
3. Review the indented output and copy it.
4. Fix any syntax errors reported before formatting succeeds.

How it works

Valid JSON is parsed and re-serialized with consistent indentation and spacing. Invalid JSON cannot be formatted until syntax issues are corrected.

Used by developers when reading API responses, config files and logs.

Examples

• Minified {"a":1,"b":[2,3]} becomes a multi-line indented document.
• Trailing commas or single quotes cause a parse error until fixed.
• Nested objects and arrays keep structure while gaining readability.

JSON Formatter FAQ

Why won’t my JSON format?

The input must be valid JSON (double quotes, no trailing commas, proper brackets). Fix syntax errors and try again.

Is data uploaded?

Formatting runs in your browser.

Is the JSON Formatter free?

Yes.