JSON Validator
Validate JSON syntax, detect errors, and analyze JSON structure with detailed statistics.
Advanced JSON Validation Tool
Ensure JSON data integrity with comprehensive syntax validation and structure analysis. Provides instant validation results, detailed error reporting, and statistical analysis for developers, API designers, and data analysts requiring reliable JSON verification for production applications.
JSON Validation: Critical for Data Integrity
JSON validation verifies that JSON (JavaScript Object Notation) data conforms to the official JSON specification (RFC 7159). Proper validation ensures JSON data can be safely parsed by applications, APIs, and databases without causing runtime errors or data corruption.
Impact of Invalid JSON
Invalid JSON can cause API failures, application crashes, data loss, and security vulnerabilities. Proper validation prevents these issues and ensures reliable data exchange across systems.
Advanced JSON Validation Features
Real-Time Validation
Instant syntax checking as you type with immediate error feedback
Precise Error Location
Exact line and column numbers for quick error identification and fixing
Structure Analysis
Comprehensive statistics including depth, keys, objects, and arrays count
Deep Inspection
Advanced parsing engine that catches subtle syntax and structure issues
Size Calculation
Accurate byte size measurement for performance optimization planning
Security Focused
Local validation ensures sensitive JSON data never leaves your browser
Common JSON Validation Errors and Solutions
Syntax Errors
Common Issues:
- Missing commas between properties
- Trailing commas (not allowed in JSON)
- Unquoted property names
- Single quotes instead of double quotes
- Unclosed brackets or braces
Resolution Steps:
- Add missing commas after each property
- Remove trailing commas from last items
- Wrap all property names in double quotes
- Replace single quotes with double quotes
- Ensure all brackets and braces are properly closed
JSON Validator Technical Specifications
Core Features
- Advanced parsing engine with detailed error reporting
- Real-time validation with instant feedback
- Comprehensive structure analysis and statistics
- Support for large and complex JSON files
- Standards-compliant validation (RFC 7159)
Implementation Details
- Instant validation with no loading delays
- Client-side processing for data security
- No registration or account requirements
- Privacy-focused local processing
- Cross-platform browser compatibility