Documentation
Complete guide to using JSONUtil.com tools and understanding JSON best practices. Learn how to validate, format, convert, and manipulate JSON data effectively.
🚀 Getting Started with JSON
Learn the fundamentals of JSON and how to use our comprehensive toolkit
What is JSON?
JSON (JavaScript Object Notation) is a lightweight, text-based data interchange format. Despite its name suggesting a connection to JavaScript, JSON is language-independent and widely used across different programming languages and platforms.
✅ JSON Advantages
- • Human-readable and easy to understand
- • Lightweight and fast to parse
- • Widely supported across platforms
- • Native JavaScript object syntax
🎯 Common Use Cases
- • REST API requests and responses
- • Configuration files
- • Data storage and exchange
- • Web application state management
JSON Syntax Rules
Basic Rules:
- • Data is in name/value pairs
- • Data is separated by commas
- • Curly braces hold objects
- • Square brackets hold arrays
String Rules:
- • Must use double quotes only
- • Escape special characters
- • No trailing commas allowed
- • Case-sensitive property names
Basic JSON Example
{
"person": {
"name": "John Doe",
"age": 30,
"city": "New York",
"hobbies": ["reading", "swimming", "coding"],
"married": true,
"children": null,
"address": {
"street": "123 Main St",
"zipCode": "10001"
}
}
}🛠️ Tool Guides
Comprehensive guides for each JSONUtil.com tool
JSON Validator
Validate JSON syntax and identify errors with detailed reporting and real-time feedback.
How to use:
- 1. Paste JSON into the input area
- 2. Click "Validate JSON" to check syntax
- 3. Review error messages and suggestions
- 4. View structure statistics for valid JSON
JSON Formatter
Format and beautify JSON for better readability with customizable options.
How to use:
- 1. Input unformatted JSON
- 2. Choose indentation (2, 4, or 8 spaces)
- 3. Enable "Sort Keys" for alphabetical ordering
- 4. Use "Minify" to remove all whitespace
JSON Converter
Convert JSON to other formats like CSV, XML, YAML, and TypeScript interfaces.
How to use:
- 1. Select desired output format
- 2. Configure conversion options
- 3. Download or copy converted data
- 4. Use examples for different scenarios
JSON Diff
Compare JSON objects and visualize differences with detailed analysis.
How to use:
- 1. Paste two JSON objects to compare
- 2. Review highlighted differences
- 3. Export diff report if needed
- 4. Analyze added, removed, or modified values
JSONPath Tester
Query and extract data from JSON structures using JSONPath expressions.
How to use:
- 1. Input your JSON data to query
- 2. Enter JSONPath expression (e.g., $.store.book[*].title)
- 3. Execute query to see matching results
- 4. Use quick queries for common patterns
JSON Schema Generator
Generate JSON Schema from sample data with intelligent type inference and format detection.
How to use:
- 1. Paste sample JSON data
- 2. Click "Generate Schema" to analyze structure
- 3. Review generated JSON Schema Draft 7
- 4. Copy schema for validation or documentation
JSON Tree Viewer
Visualize and explore JSON data with an interactive collapsible tree structure for easy navigation.
How to use:
- 1. Paste your JSON data into the input
- 2. View hierarchical tree structure
- 3. Expand/collapse nodes to explore nested data
- 4. Navigate complex structures easily
📚 JSON Best Practices
Professional guidelines for working with JSON data
⚡ Performance Considerations
- •Flat Structure: Keep JSON structure as flat as possible for faster parsing
- •Data Types: Use appropriate data types (numbers vs strings) for efficiency
- •Nesting Depth: Minimize deeply nested objects for better performance
- •Arrays: Consider using arrays for collections rather than numbered objects
🔒 Security Best Practices
- •Validation: Always validate JSON on both client and server sides
- •Sanitization: Sanitize data before processing to prevent injection attacks
- •HTTPS: Use HTTPS for JSON data transmission over networks
- •Error Handling: Implement proper error handling for malformed JSON
✨ Formatting Standards
- •Consistent Indentation: Use 2 or 4 spaces consistently throughout
- •Key Naming: Use camelCase or snake_case consistently
- •Documentation: Include schema documentation for complex structures
- •Versioning: Consider versioning for API JSON responses
🎯 Common Use Cases
- •APIs: REST API requests and responses for data exchange
- •Configuration: Application settings and configuration files
- •Data Storage: NoSQL databases and data interchange
- •Web Development: AJAX requests and browser local storage
❓ Frequently Asked Questions
Is my data secure when using JSONUtil.com?
Absolutely! All processing happens entirely in your browser using client-side JavaScript. Your JSON data never leaves your device or gets sent to our servers. This ensures complete privacy and security for your sensitive information.
What's the maximum file size I can process?
Our tools can handle files up to 10MB efficiently. For larger files, we recommend breaking them into smaller chunks or using our tools for specific sections of your data.
Can I use these tools offline?
Yes! After your first visit, the site works offline for all core functionality. The tools are cached in your browser and will work without an internet connection.
Do you support JSONC (JSON with comments)?
Our validator can identify JSONC format, but most tools work with standard JSON. Use the formatter to remove comments if you need to convert JSONC to standard JSON.