DEVELOPER TOOLS
JSON Formatter Online
Beautify, validate and minify JSON strings in your browser.
Try the tool
Runs in your browserFormula or method
JSON.parse(input) checks syntax; JSON.stringify(value, null, 2) adds indentation.
Use the method above to understand how the result is produced. Some tools use text-processing rules rather than mathematical equations.
How to use the JSON Formatter Online
Paste JSON and click Format JSON. You can also minify it or copy the result.
- Enter the requested values or paste your content into the fields above.
- Choose the appropriate action to calculate, format or preview.
- Review the result and copy or save it when needed.
Worked example
{"name":"Alex","active":true} becomes readable, indented JSON.
Use the example as a reference, and replace the sample inputs with your own values.
Frequently asked questions
Does it validate JSON syntax?
Yes. Parse errors are displayed when the data is invalid.
Can I minify JSON?
Yes. Use the Minify JSON button.
Will key order change?
JSON.parse and JSON.stringify generally retain ordinary object property enumeration order, but should not be used for cryptographic canonicalization.
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