FREE · PRIVATE · IN YOUR BROWSER
JSON formatter and validator
Make JSON easier to read, check whether it is valid, or minify it to remove extra whitespace. Paste your data and copy the result.
Format JSONHow to format JSON
- Paste JSON into the input box.
- Choose Format to pretty-print it or Minify to make it compact.
- Convert to validate the syntax, then copy the result.
JSON formatting without uploading data
The formatter uses your browser's built-in JSON parser. Valid JSON is displayed with readable indentation or minified output. If parsing fails, the tool reports an error so you can correct the input. It does not modify the values in your JSON.
Everything runs locally in your browser. Do not paste passwords, access tokens or other secrets into a website unless you understand the risks of the device and browser you are using.
Frequently asked questions
Does this JSON validator send my data anywhere?
No. The JSON is handled locally by your browser and is not uploaded by the tool.
Can I minify JSON?
Yes. Choose Minify to remove formatting whitespace while preserving JSON values.
Is the JSON formatter free?
Yes. It is free to use with no account required.