Developer Utilities
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JSON Validator
Validate JSON syntax and detect syntax errors with line numbers, column positions, and descriptive explanations.
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How to Use JSON Validator
1
Paste JSON into the input box.
2
The validator immediately checks syntax and parses the structure.
3
Get a clear "Valid JSON" confirmation or exact error location to fix.
Example & Output
Pins down exact syntax bugs such as trailing commas.
Input Example
{
"name": "TextKit",
"version": 1,
}Resulting Output
Invalid JSON: Trailing comma at line 3, column 15
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Frequently Asked Questions
Standard JSON specification (RFC 8259) forbids trailing commas. The validator will flag them and offer an auto-clean option.
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