Format, Validate & Beautify Your JSON Data
JSON (JavaScript Object Notation) is a lightweight, text-based data interchange format that's easy for humans to read and write, and easy for machines to parse and generate. Originally derived from JavaScript, JSON has become the de facto standard for data exchange across the web and between applications. It uses a simple syntax with key-value pairs, arrays, and nested objects, making it perfect for APIs, configuration files, and data storage.
JSONBay is a free, powerful online JSON formatter and validator tool designed to help developers, data analysts, and anyone working with JSON data. Whether you need to beautify minified JSON, validate JSON syntax, or compress formatted JSON, JSONBay provides an intuitive interface to handle all your JSON processing needs instantly in your browser. No installation required, no data sent to servers - everything happens client-side for maximum privacy and speed.
Copy this unformatted JSON sample and paste it into the Input JSON textarea above to see JSONBay in action:
A JSON validator is a tool that checks whether your JSON data follows the correct syntax rules defined by the JSON specification. It works by parsing your JSON text and checking for common errors such as missing commas, unclosed brackets, invalid characters, or incorrect data types. When you click the "Validate" button on JSONBay, our validator instantly analyzes your JSON structure and provides clear feedback. If errors are found, you'll receive specific error messages indicating what went wrong and where, making it easy to fix issues quickly. Valid JSON will display a success message, giving you confidence that your data is properly formatted for use in APIs, databases, or applications.
Yes! JSONBay is completely free to use with no limits on the number of times you can format, validate, or minify your JSON data.
Absolutely. All JSON processing happens entirely in your browser using JavaScript. Your data never leaves your computer or gets sent to any server, ensuring complete privacy and security.
Format adds proper indentation, line breaks, and spacing to make JSON human-readable and easy to understand. Minify does the opposite - it removes all unnecessary whitespace to create the smallest possible file size, ideal for reducing bandwidth in production environments.
Yes, JSONBay can process large JSON files efficiently. However, extremely large files (several megabytes) may take a moment to process depending on your browser and device performance.
The validator detects all common JSON syntax errors including missing or extra commas, unclosed brackets or braces, invalid string formats, incorrect use of quotes, trailing commas, and invalid characters or data types.
Once the page is loaded, the core functionality works offline since all processing happens in your browser. However, you'll need an internet connection for the initial page load.