JSON Formatter
A tool to format and validate JSON data.
Input JSON
0 charactersOutput JSON
🛠️ JSON Formatter & Validator: Essential Tool for Developers
A powerful tool that cleanly formats complex and hard-to-read JSON data and detects syntax errors. Use it when debugging API responses, managing JSON configuration files, or simply making data more readable. Check results in real-time and compress or validate data.
🔧 How to Use
1. Input JSON Data
Paste JSON data into the left editor or type directly.
2. Real-time Conversion Check
As soon as you input data, you can check the automatically formatted and color-coded results in the right panel.
3. Use Feature Buttons
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⭐ Key Advantages
Automatic Formatting and Indentation
Instantly converts hard-to-read single-line JSON into a clear hierarchical structure.
Real-time Syntax Validation
Detects JSON syntax errors in real-time and identifies problematic parts for quick fixes.
Syntax Highlighting
Displays different data types (Key, String, Number, etc.) in different colors to maximize readability.
Data Compression
Compresses formatted JSON back to a single line to reduce data transmission size.
💡 Use Cases
👨💻 API Development and Debugging
Paste API request and response data to analyze structure and quickly find errors.
📊 Data Analysis
Easily understand the hierarchical structure of complex JSON data to find desired information.
🔧 Configuration File Management
Create or modify JSON format configuration files cleanly without syntax errors.
🎓 Learning and Education
Helps learners new to JSON data structures visually understand data hierarchy and format.
💯 Expert Tips
Large File Processing
This tool operates only on the client side (browser), so you can safely process large JSON files containing sensitive information without server transmission.
Keyboard Shortcuts
Press Ctrl+Space in the editor to see auto-completion suggestions for convenience.
Error Message Check
When JSON is invalid, use the error messages displayed in the output panel to accurately identify and fix problems.