JSON Formatter
Format, beautify and validate JSON with clear error messages.
Paste messy or minified JSON and get it cleanly indented and validated. If the JSON is broken, the tool points to what went wrong so you can fix it fast. Toggle minify to compress it back into a single line.
Frequently asked questions
Does it validate my JSON?
Yes. Invalid JSON produces a clear error message describing the problem instead of a formatted result.
Is my data private?
Completely. Formatting happens in your browser; your JSON is never uploaded.
Can it minify as well as beautify?
Yes — tick the Minify option to strip all whitespace and get compact JSON on a single line.