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Use conversion, trimming, crop, and utility tools directly in your browser with a clean and private workflow.

Developer utility

JSON Validator and Formatter

Validate JSON syntax locally with parse feedback. If valid, format with indentation, key sorting, or minified output.

Result

Validation status and formatted output appear here after submission.

How To Use

  1. Paste JSON into the input area.
  2. Set indent size and optionally enable key sorting.
  3. Run validation to check syntax.
  4. Copy formatted or minified output.

Common Use Cases

  • Validate API payload JSON before sending requests.
  • Format config files for readability.
  • Minify JSON for embedding in scripts.

FAQ

Does this tool upload JSON to a server?

No. Validation and formatting are fully local in your browser.

Can I sort object keys automatically?

Yes. Enable key sorting to normalize object key order before formatting.

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