Our JSON Validator is a free online tool that validates JSON syntax and structure instantly. Check for errors, verify JSON format, and ensure your JSON is valid before using it in your applications.
No signup required, 100% privacy-focused (all processing happens in your browser). Use our JSON Validator to validate JSON before parsing.
Features
Instant Validation
Validate JSON in real-time as you type
Error Detection
Shows exact error location and message
100% Free
No signup, no limits, completely free
Privacy-Focused
All processing happens in your browser
How to Use JSON Validator
Paste Your JSON
Copy and paste your JSON into the validator
Get Instant Results
See if your JSON is valid or get detailed error messages
Fix Errors (If Needed)
If invalid, use our JSON Fixer to repair it automatically
FAQ
What is JSON validation?
JSON validation checks if a JSON string follows the correct syntax rules and structure according to the JSON specification.
Why should I validate JSON?
Validating JSON before using it prevents runtime errors in your application. It's essential when working with APIs or user input.
Is the JSON Validator free?
Yes, 100% free. No signup required, no usage limits. All processing happens in your browser for maximum privacy.
Validate JSON Instantly
Use our free JSON Validator to check your JSON syntax. If invalid, use our JSON Fixer to repair it automatically.