JSON Formatter & Validator
Format, validate, and minify JSON instantly. Beautiful formatting with customizable indentation, real-time validation, and error detection β all in your browser.
About This Tool
- Real-time JSON validation with error messages
- Pretty-print JSON with 2 or 4 space indentation
- Minify JSON to reduce file size
- Completely free with no registration required
Frequently Asked Questions
JSON formatting (or pretty-printing) adds proper indentation and line breaks to JSON data, making it easy to read and understand. Minified JSON is compact but hard to read β formatting makes it human-friendly.
The validator parses your JSON using the browser's built-in JSON.parse() function. If the JSON is valid, it shows a green checkmark. If invalid, it displays the exact error message to help you find and fix the problem.
Minification removes all whitespace, indentation, and line breaks from JSON, producing the smallest possible file. This is useful for reducing payload size in APIs and configuration files.
Yes, completely free with no registration. Format, validate, and minify as much JSON as you need.