◧ DEVELOPER Updated July 25, 2026
JSON Formatter
Format, validate, and minify JSON with clear error messages.
Result Valid JSON
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How it works
Paste any JSON into the input box and click Format. The tool parses it and, if valid, pretty-prints it with 2-space indentation. If it is invalid, you get a specific error message telling you what went wrong. Use Minify to collapse it back to a single line.
Examples
Simple object
{"name":"Ada","active":true,"tags":["dev","admin"]}Frequently asked questions
Does this validate my JSON?
Yes. If the JSON is invalid, the tool shows the specific parsing error instead of silently failing.
Is my JSON data sent to a server?
No. Parsing and formatting both happen entirely in your browser using the built-in JSON parser — nothing is uploaded.
What is the difference between Format and Minify?
Format adds indentation and line breaks for readability. Minify removes all unnecessary whitespace to produce the smallest possible output, useful for production payloads.
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