JSON Validator
Check JSON syntax in real time. Instantly identifies missing brackets, unterminated strings, and duplicate keys. Supports JSON5 comments and trailing commas.
JSON Validator Use Cases
- Verifying API responses before processing them in your application
- Checking configuration files before deployment to prevent runtime errors
- Validating user-submitted JSON data in forms or file uploads
- Debugging JSON parsing errors in your code
- Ensuring data integrity when transferring JSON between systems
JSON Validator FAQ
What does JSON validation check for?
JSON validation checks for syntax errors including missing brackets, unmatched quotes, trailing commas, invalid escape sequences, and duplicate keys in objects.
What is the difference between syntax and schema validation?
Syntax validation ensures the JSON is well-formed according to the JSON specification. Schema validation goes further by checking if the JSON structure matches a predefined schema with specific rules for data types, required fields, and value constraints.
Can I validate JSON with comments?
Yes! This validator supports JSON5 format, which allows comments (both // and /* */), trailing commas, and single quotes for strings. It will automatically detect and handle JSON5 syntax.