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About this JSON formatter
This tool parses your JSON, checks it for syntax errors, and reformats it with consistent indentation. If something's wrong, it tells you the line and the exact character where parsing failed, instead of a vague error message.
You can also minify JSON to a single line for production use, or sort object keys alphabetically to make diffs and comparisons easier to read. Everything runs locally in your browser — nothing is sent to a server.