Developer tools

JSON formatter & validator

Validate, pretty-print, or minify JSON locally in your browser.

Processed locally
JSON formatter & validator
Result

Your answer will appear here.

Help and method

Paste valid JSON and choose readable indentation or minification. Validation rejects comments and trailing commas. Formatting preserves original number tokens, including large integers; it does not validate an application schema.

Methods and reliability

Worked example

An example you can try or adapt to your own values.

JSON input
{ "count": 9007199254740993, "ok": true }
Output format
Minify

Result

{"count":9007199254740993,"ok":true}

Try these inputs