JSON Formatter & Validator
Beautify, validate, and minify JSON data with syntax highlighting.
About This Tool
JSON (JavaScript Object Notation) is a lightweight data interchange format that is easy for humans to read and write, and easy for machines to parse and generate. This tool helps you format messy JSON, validate its syntax, and optionally minify it for production use.
Common Use Cases
- Debugging API responses
- Formatting configuration files
- Validating JSON data before sending to APIs
- Minifying JSON for smaller payloads
- Inspecting JSON data structures
Examples
Input (minified):
{"name":"John","age":30,"cities":["New York","Paris"]}
Output (formatted):
{
"name": "John",
"age": 30,
"cities": [
"New York",
"Paris"
]
}
Notes & Limitations
- JSON keys must be strings wrapped in double quotes
- Single quotes are not valid JSON (use double quotes)
- Trailing commas are not allowed in JSON
- Comments are not supported in standard JSON
Privacy Note
All JSON processing happens entirely in your browser. Your data is never sent to our servers or stored anywhere.