Go to Developer Tools
Developer Tools
JSON Formatter Online
Format, validate, and beautify JSON.
Runs in your browserNo upload requiredNo signup required
JSON input
Paste JSON, format it, then copy the clean output.
Workflow
- 1Paste your JSON into the input box.
- 2Click Format JSON to validate and beautify it.
- 3Review any error message if the JSON is invalid.
- 4Copy the formatted output when it looks right.
FAQ
Does this JSON formatter upload my data?
No. This tool runs in your browser and does not upload your JSON to a server.
Can it validate JSON?
Yes. Invalid JSON shows a parse error so you can fix the input before copying output.
Does it change the JSON values?
No. It parses and reprints the same JSON data with readable indentation.