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JSON Formatter & Validator

Beautify, validate, and minify your JSON data instantly. All processing is done locally in your browser.

Input
Output
Ready to format.

What is JSON?

JSON (JavaScript Object Notation) is a lightweight data-interchange format. It is easy for humans to read and write and easy for machines to parse and generate. It allows you to represent complex data structures in a text-based format.

Because it's text-based, it's widely used in web APIs, configuration files, and data storage solutions to exchange information between servers and clients.

Why format JSON?

  • Readability: Raw JSON often comes as a single long line, which is impossible to read. Formatting it adds indentation and structure.
  • Debugging: If an API returns an error or unexpected data, viewing it in a structured format helps you spot the issue quickly.
  • Validation: It's easy to miss a comma or a bracket. A validator checks the syntax and tells you exactly where the error is.

Frequently Asked Questions

Is my data secure?

Yes. This tool is 100% client-side, meaning your JSON data never leaves your browser. It is processed locally using JavaScript.

What does Minify do?

"Minify" removes all unnecessary whitespace (spaces, tabs, newlines) from the JSON. This reduces the file size, which is useful when sending data over a network or storing it efficiently.

What does 'Invalid JSON' mean?

It means your text does not follow the strict JSON syntax rules. Common errors include missing quotes around keys, trailing commas, or unclosed brackets. Our tool highlights these syntax errors for you.

Can I convert JSON to XML or CSV?

Currently, this tool focuses on JSON formatting and validation. We plan to add conversion tools in the future!