JSON Validator
FeedbackValidate JSON syntax with detailed error messages and location indicators
JSON Input
Usage Instructions
- Paste or type your JSON data in the input box
- Tool will automatically validate JSON syntax and display results
- If JSON is valid, a green border and detailed statistics will be displayed
- If JSON is invalid, a red border and specific error message with position will be displayed
- Click "Copy Formatted Result" to copy the formatted valid JSON
Common JSON Errors:
- Missing or extra commas
- Key names not using double quotes
- Strings using single quotes instead of double quotes
- Trailing comma at the end
- Mismatched parentheses or braces
About JSON Validator
Comprehensive JSON syntax validator that checks your JSON for errors and provides precise error locations with line and column numbers. Displays JSON structure statistics including type, depth, key count, and file size. Features instant validation, detailed error explanations, and automatic formatting for valid JSON. Essential tool for debugging JSON data and ensuring syntax correctness.
Frequently Asked Questions
What JSON errors can this validator catch?
It catches syntax issues such as missing commas, unquoted keys, extra trailing characters, invalid strings, and mismatched brackets.
Why is valid JavaScript object syntax not always valid JSON?
JSON is stricter than JavaScript object literals. Keys must be double-quoted, comments are not allowed, and trailing commas are invalid.
Can I use it to debug API responses?
Yes. Paste the response body to validate syntax, locate parsing errors, and understand the structure before using it in code.
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