JSON Formatter
Format, validate, and beautify JSON data. Minify for production or pretty-print for readability. Instant client-side processing with syntax highlighting.
About this tool
Use this JSON formatter to make valid JSON easier to read, inspect, and share. Paste JSON into the tool to format it with indentation, minify it, or check for basic syntax errors.
How to use
- Paste your JSON object, array, or value into the input area.
- Choose whether you want to beautify, minify, or validate the JSON.
- Review the formatted output or error message, then copy the result if needed.
Example
Formatting a compact API response
A compact string like {"name":"Alex","active":true} can be expanded into readable, indented JSON so keys and values are easier to scan.
How it works
What the formatter checks
The tool parses the input as JSON. If parsing succeeds, it can output an indented version or a minified version. If parsing fails, it reports a basic syntax error from the browser JSON parser.
Frequently Asked Questions
What counts as valid JSON?
Valid JSON must use double quotes for strings, proper commas between items, and supported values such as objects, arrays, strings, numbers, booleans, and null.
Can this fix invalid JSON automatically?
No. It can show that parsing failed, but you still need to correct the invalid syntax in the input.
Is my JSON uploaded?
No. Formatting, minifying, and basic validation happen in your browser.