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JSON Formatter

Format, validate, and beautify JSON data with syntax highlighting.

Input JSON

Output

Output will appear here

Indent:

How to Use This JSON Formatter

Our JSON formatter helps you format, validate, and beautify JSON data instantly. It runs entirely in your browser — your data never leaves your device.

Paste your JSON data into the input field
Click "Format / Beautify" to pretty-print the JSON
Click "Minify" to compress it into a single line
Click "Validate" to check if your JSON is valid
Copy the formatted output with one click

FAQ

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.

Is my data safe?

Yes. All processing happens in your browser. Your JSON data is never sent to any server or stored anywhere.

What JSON errors can this tool detect?

This tool detects all JSON syntax errors including missing brackets, invalid strings, trailing commas, and incorrect data types.