JSON Formatter
Beautify, minify and validate JSON instantly in your browser. Errors are reported locally so you can fix malformed payloads safely.
Useful for API responses, config snippets and quick payload cleanup before sharing or testing.
Paste a JSON object, array or value.
Formatted or minified result appears here.
About this tool
JSON must follow strict syntax rules: double-quoted keys, valid commas, balanced brackets and legal string escapes. This formatter parses your input locally and returns either normalized output or a concise validation error.
Examples
{"service":"httptools","features":["json","base64"],"active":true}FAQ
How do I format JSON?
Paste the JSON input and click Format JSON. The tool outputs an indented, readable version in the output panel.
What makes JSON invalid?
Common issues include trailing commas, single quotes, unquoted property names and mismatched brackets or braces.
Can I minify JSON here?
Yes. Use Minify JSON to strip whitespace and output compact JSON for transport or storage.