JSON Validator
Validate your JSON instantly. Get clear error messages for invalid JSON. Free, browser-based.
JSON Input
Frequently Asked Questions
How do I validate JSON?
Paste your JSON and the tool instantly checks if it's valid. Errors are highlighted with line numbers and descriptions.
What errors does it detect?
Missing commas, unmatched brackets, invalid strings, trailing commas, and all other JSON syntax errors.
Can it fix invalid JSON?
The tool identifies errors and shows their location so you can fix them quickly.
Does it format valid JSON?
Yes. Valid JSON is automatically formatted with proper indentation and syntax highlighting.
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