JSON Formatter & Validator
Format, validate, and beautify your JSON data with syntax highlighting.
Learn more about this tool
How to Use
Paste your JSON into the input panel on the left. Click Format to beautify it with readable indentation, or Minify to compress it into a single line. UseValidate to check whether your JSON is syntactically correct. The tool auto-detects validity as you type and highlights any syntax errors.
What is JSON Formatting?
JSON (JavaScript Object Notation) is a lightweight data-interchange format used in APIs, config files, and databases. Formatting JSON adds consistent indentation and line breaks so humans can read and debug it easily. Minifying removes all unnecessary whitespace to reduce file size for transmission.
Why Validate JSON?
A single missing comma, unquoted key, or trailing comma can break JSON parsing in your application. Validating before deployment catches these errors early. This tool runs entirely in your browser — your data never leaves your device.