JSON Formatter
Instantly format and prettify your JSON data. Our tool handles minified strings, nested objects, and even large numbers (BigInt) with ease, providing a clean, readable, and structured output.
What is JSON Formatter?
JSON Formatter is a specialized online utility designed to transform compressed or 'minified' JSON data into a human-readable format. It adds proper indentation, line breaks, and syntax highlighting, making it much easier for developers to inspect, debug, and understand complex data structures.
Why Use JSON Formatter?
Minified JSON is great for data transmission but nearly impossible for humans to read. A JSON formatter restores the structure, making it essential for debugging API responses and managing configuration files.
Enhanced Readability
- Automatically adds indentation and line breaks, turning a single line of text into a clear, hierarchical structure.
Real-time Validation
- Detects syntax errors as you type or paste, helping you identify missing commas, unclosed brackets, or invalid characters instantly.
Advanced Number Support
- Unlike many basic formatters, we support BigInt and lossless number handling, ensuring your large numeric values remain accurate during formatting.
Minified vs Formatted JSON
| Feature | Minified JSON 📦 | Formatted JSON ✨ |
|---|---|---|
File Size | Smallest possible size; all whitespace removed. | Slightly larger due to spaces and newlines. |
Readability | Extremely low; difficult for human eyes to parse. | Very high; structure is immediately obvious. |
Debugging | Painful; nearly impossible to find specific keys. | Easy; clear hierarchy helps locate data quickly. |
Use Case | Production data transmission and storage. | Development, debugging, and documentation. |
Frequently Asked Questions (FAQ)
Does this tool store my JSON data?
No. All formatting is done locally in your browser. Your data is never sent to our servers, ensuring total privacy.
Can it handle large numbers?
Yes, we use the
lossless-jsonlibrary which correctly handles BigInt and very large numbers without losing precision.What is the difference between JSON Formatter and Beautifier?
They are the same. Both terms refer to the process of making minified JSON data readable by adding whitespace and indentation.