JSON Validator
Validate JSON syntax with detailed error messages and line numbers. Also prettify and minify valid JSON.
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Frequently Asked Questions
What does this JSON validator check?+
It checks that your JSON is syntactically valid according to the JSON specification (RFC 8259). It detects missing commas, unclosed brackets, trailing commas, single quotes, unquoted keys, and other common errors.
Can it fix invalid JSON?+
This tool detects and locates errors but doesn't auto-fix them. It shows the line and column number of the error so you can fix it manually. For formatting valid JSON, it can pretty-print with proper indentation.
What's the difference between this and JSON Formatter?+
JSON Formatter focuses on formatting (pretty-print/minify) valid JSON. This JSON Validator focuses on finding and locating errors in invalid JSON, with detailed error messages and line numbers.