JSON Formatter
Format and validate JSON. Share via URL.
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Valid JSON
About JSON Formatter
JSON (JavaScript Object Notation) is one of the most widely used data interchange formats. Our free online JSON Formatter helps developers quickly format, validate, and minify JSON data without leaving their browser. Whether you're debugging API responses, cleaning up configuration files, or validating data structures, this tool handles it all instantly. Features include syntax highlighting via Monaco Editor, instant validation with detailed error messages, one-click minification for production, and shareable links that encode your JSON in the URL. All processing happens locally in your browser—your data never leaves your device, ensuring complete privacy and security. Perfect for developers, QA engineers, and anyone working with RESTful APIs or JSON-based configurations.
Key Features
- ✓100% Free: No signup, no hidden fees, unlimited usage
- ✓Privacy First: All processing happens locally in your browser
- ✓Fast & Reliable: Instant results without server delays
- ✓No Installation: Works directly in your web browser
- ✓Mobile Friendly: Responsive design works on all devices
Frequently Asked Questions
- What is a JSON Formatter?
- A JSON formatter pretty-prints JSON so it's easier to read and debug. It adds proper indentation and line breaks.
- Is my data stored?
- No. All processing happens locally in your browser. We never send or store your data.
- Can I share formatted JSON?
- Yes! Click the Share button to generate a URL with your JSON encoded in it.
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