About JSON Validator
Check whether your JSON is syntactically valid and get precise, actionable error messages that identify the exact line and character position of any issue. The validator helps you catch missing brackets, trailing commas, unquoted keys, and other common JSON mistakes before they cause runtime errors.
How to Use JSON Validator
- 1
Paste your JSON
Enter the JSON string or object you want to validate.
- 2
Validate
Click Validate to check for syntax errors.
- 3
Fix errors
Review the error message and line number to locate and fix any issues.
Common Use Cases
- Catching JSON errors in API request and response bodies
- Verifying JSON configuration files before deployment
- Debugging data pipeline outputs
- Checking JSON files edited manually in a text editor
Frequently Asked Questions
What errors can it detect?
How is this different from the JSON Formatter?
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