What does JSON validation do?

JSON validation checks whether a string follows the correct JSON syntax. It reports errors with details like line and column numbers.

What information is shown for valid JSON?

For valid JSON, the tool shows the data type (object, array, string, etc.), nesting depth, and for objects the number of keys or for arrays the number of items.

Yes. All processing happens locally in your browser. No data is sent to any server.

JSON Validator

Validate and check JSON syntax instantly. Get detailed error messages with line numbers. Runs entirely in your browser.

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