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JSON Formatter
Paste JSON below and hit Format to pretty-print it (or Minify to compact it). Invalid JSON shows the exact error. Everything stays in your browser.
About JSON Formatter
JSON (JavaScript Object Notation) is the most common data format for APIs and config files. This formatter parses your input, reports any syntax error with its location, and re-serializes it with consistent indentation so it's easy to read. Minify strips all whitespace for the smallest possible payload. Because it runs client-side, you can safely format sensitive data — none of it leaves your device.