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JSON Validator

Check whether JSON is valid and get a readable error message when the structure is not.

Workspace

Paste a value, run the tool, and copy the result.

Input

Ready when you are.

Your result will appear here.

Keep exploring

Turn compact or difficult-to-read JSON into clean, indented JSON you can inspect and copy.

Remove unnecessary JSON whitespace while keeping the data valid and ready for transport.

Encode text as Base64 in your browser for quick debugging, testing, and data exchange tasks.

From the guide archive