JSON Input
Formatted JSON
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Privacy Focused
All processing happens in your browser. JSON data never leaves your device.
Lightning Fast
Real-time validation and formatting with instant error detection.
Mobile Friendly
Works perfectly on all devices with responsive design and touch support.
What is JSON?
✨ What is JSON?
JSON (JavaScript Object Notation) is a lightweight, text-based data interchange format. It's easy for humans to read and write, and easy for machines to parse and generate.
Despite its name, JSON is language-independent and is used across virtually all modern programming languages for data exchange, configuration files, and API responses.
🎯 Common Use Cases
- • REST API request and response data
- • Configuration files for applications
- • Data storage and transmission
- • AJAX web applications
- • NoSQL database documents
Frequently Asked Questions
What's the difference between JSON and JavaScript objects?
JSON is a text format that represents data, while JavaScript objects are actual objects in memory. JSON requires double quotes for strings and property names, doesn't support functions or comments, and has stricter syntax rules.
Is my JSON data stored on your servers?
No, absolutely not! All JSON processing happens entirely in your browser using JavaScript. Your data never leaves your device, ensuring complete privacy and security.
Can I format JSON with comments?
Standard JSON doesn't support comments, but our tool can handle JSONC (JSON with Comments) format. Use the "Remove Comments" feature to convert JSONC to valid JSON.
What's the maximum JSON size I can format?
There's no hard limit, but very large JSON files (>10MB) may cause performance issues in your browser. For optimal performance, we recommend keeping files under 5MB.
Why should I minify JSON?
Minifying JSON removes unnecessary whitespace and formatting, reducing file size by 20-40%. This improves API response times and reduces bandwidth usage in production applications.
How does the tree view help?
Tree view provides a visual, hierarchical representation of your JSON structure. It's especially useful for complex nested data, allowing you to expand/collapse sections and understand the data organization at a glance.