JSON Formatter
PopularFormat, validate, and minify JSON instantly.
How to format and validate JSON
Paste your JSON and the formatter instantly indents it into clean, readable structure and flags any syntax errors. Use it to beautify minified JSON, spot a missing comma or bracket, and copy the tidy result.
Why use a JSON formatter?
Raw API responses and config files are often minified into one long line that's hard to read. Formatting reveals the structure, makes debugging far quicker, and validating catches the small syntax mistakes that break parsing.
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Frequently Asked Questions
What does a JSON formatter do?
It takes raw or minified JSON and adds proper indentation, line breaks, and spacing to make it readable, and validates the structure.
How do I validate JSON?
Paste your JSON and click Format JSON. If it's invalid, a clear error message shows the exact problem.
What is JSON minification?
Minification strips all whitespace and line breaks to make JSON as compact as possible — handy for APIs and smaller payloads.
Is the JSON formatter free?
Yes, completely free. No sign-up, no limits, and it runs entirely in your browser.