JSON Validator

Validate JSON syntax and structure instantly. Get detailed error messages that pinpoint exactly where your JSON is invalid. All validation happens in your browser with no data sent to servers.

How to use

1. Paste or upload your JSON data
2. The validator automatically checks for syntax errors
3. View detailed error messages with line numbers
4. Fix errors and re-validate

Features

• Real-time JSON syntax validation
• Detailed error messages with line and column numbers
• Support for large JSON files
• Instant feedback as you type
• No data sent to servers — 100% browser-based