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json-formatter

JSON Formatter

Online JSON formatter, validator, and minifier. Format JSON, validate API responses, and clean up JSON data structures directly in your browser. Free online tool with no signup required. Works directly in your browser and is designed for quick same-page results.

Formatted, minified, or validated output will appear here.

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Format, validate, and clean JSON before you paste it into APIs, configs, or logs

Use JSON Formatter when you need to read API responses, debug webhook payloads, clean copied config blocks, or minify JSON before sending it somewhere else.

What makes this JSON formatter practical

  • Pretty-print long JSON so nested objects and arrays are easier to scan.
  • Validate JSON before you copy it into request bodies, config fields, or test data.
  • Switch between formatted and minified output on the same page depending on what you need next.

How to use JSON Formatter

  1. Paste the text or data you want to process.
  2. Adjust the settings and check the preview or result.
  3. Confirm the output and copy the result you need.

JSON Formatter FAQ

Can this help me catch invalid JSON?

Yes. JSON Formatter validates the content so you can spot malformed commas, quotes, brackets, or structure before reusing it.

When should I minify JSON?

Minified JSON is useful when you need a compact one-line value for config fields, request bodies, embeds, or storage where extra spacing is not needed.

Is this useful for API responses and webhook payloads?

Yes. You can paste response bodies, event payloads, or copied snippets here to format, validate, and copy them again in a cleaner state.