JSON Formatter & Validator
Beautify, validate and minify JSON data in your browser. Nothing is sent to a server by this tool.
Enter your JSON
Privacy: parsing and formatting run locally in your browser. Avoid pasting secrets into any online tool unless you trust the environment.
What does a JSON formatter do?
A JSON formatter converts compact or inconsistently spaced JSON into a readable structure. It can also detect syntax errors, such as missing commas, unmatched braces or invalid quotation marks.
Is my JSON uploaded?
This starter tool uses JavaScript's built-in JSON parser in your browser. It does not send the entered JSON to ModernToolHub's server.
Frequently asked questions
What is valid JSON?
JSON is a text format for structured data. It uses objects, arrays, strings, numbers, booleans and null, with strict syntax rules.
Can this tool minify JSON?
Yes. Choose Minify to produce compact JSON without unnecessary whitespace.