JSON Formatter / Validator
Format, validate, and minify JSON data with syntax highlighting.
About the JSON Formatter / Validator
Minified or poorly formatted JSON is hard to read and easy to misdiagnose when something's wrong. This tool formats JSON with proper indentation and syntax highlighting, validates it for errors, and can also minify it back down for production use.
It's commonly used by developers debugging API responses, configuration files, or data exports.
How to Use This Tool
- 1Paste your JSON data into the input box.
- 2The tool validates it and shows a formatted, indented version with syntax highlighting.
- 3Use the minify option if you need a compact, whitespace-free version instead.
Frequently Asked Questions
What happens if my JSON is invalid?
The tool flags the syntax error and points to roughly where the problem is — commonly a missing comma, an unclosed bracket, or a trailing comma, which are the most frequent causes of invalid JSON.
What's the difference between formatting and minifying?
Formatting adds indentation and line breaks for readability; minifying strips all unnecessary whitespace to produce the smallest possible file size, which is preferable for production APIs but harder to read.
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