JSON Formatter & Validator
Paste your JSON to format, validate, or minify it instantly. Free, private, and runs entirely in your browser.
About JSON Formatter
JSON (JavaScript Object Notation) is the most popular data interchange format used across web applications, APIs, and configuration files. Our JSON Formatter tool helps you work with JSON data more effectively.
Format & Beautify
Transform compact, hard-to-read JSON into a well-indented, easy-to-understand format. Choose between 2 spaces, 4 spaces, or tab indentation to match your coding style.
Validate JSON
Instantly detect syntax errors in your JSON data. Our validator provides precise error messages with line and column numbers, making it easy to locate and fix issues.
Minify for Production
Reduce your JSON file size by removing all unnecessary whitespace. Perfect for API responses, configuration files, and data storage optimization.
Syntax Highlighting
Color-coded output makes it easy to distinguish between keys, strings, numbers, booleans, and null values at a glance.
Frequently Asked Questions
Is my JSON data safe?
Yes! All processing happens entirely in your web browser using JavaScript. No data is ever sent to our servers or stored anywhere.
What is JSON?
JSON (JavaScript Object Notation) is a lightweight data format that is easy for humans to read and write, and easy for machines to parse and generate. It's the standard for API communication.
What's the difference between Format and Minify?
Format (beautify) adds indentation and line breaks to make JSON readable. Minify removes all whitespace to reduce file size for production use.
Can I format large JSON files?
Yes, the tool handles large JSON data efficiently since all processing runs locally in your browser. Performance depends on your device's capabilities.