Built by Switch Labs
JSON Formatter & Validator
Format, validate, minify, and convert JSON online. Free JSON beautifier with syntax validation, error detection, and conversion to YAML/XML. No sign-up required.
- Real-time validation
- Format & minify
- Convert to YAML/XML
JSON Input
Paste or write JSON. We'll validate it in real-time.
Output
What is JSON?
JSON (JavaScript Object Notation) is a lightweight data-interchange format that's easy for humans to read and write, and easy for machines to parse and generate. It's based on a subset of JavaScript and has become the standard format for web APIs and configuration files.
JSON is built on two structures: collections of name/value pairs (objects) and ordered lists of values (arrays). This simple structure makes JSON incredibly versatile for representing complex data hierarchies.
Why Validate JSON?
Validating JSON ensures your data is properly formatted and can be parsed without errors. Even a small syntax error—like a missing comma or mismatched bracket—can cause your application to fail. Our validator provides instant feedback with detailed error messages, helping you identify and fix issues quickly.
Format & Beautify
Make your JSON human-readable with proper indentation and spacing.
Minify
Remove whitespace to reduce file size for production use.
Convert
Transform JSON to YAML or XML formats instantly.
Frequently Asked Questions
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