JSON Validator
Check JSON for errors, with the exact line and column of any problem.
JSON Validator
Paste JSON to check whether it’s valid. Errors are shown with their line and column.
About JSON Validator
The JSON Validator checks whether text is valid JSON and, if not, shows the exact syntax error with its line and column. It validates live as you type, entirely in your browser.
How to use JSON Validator
- Paste your JSON.
- See instantly whether it is valid.
- If invalid, read the error message with its line and column and fix it.
Frequently asked questions
What makes JSON invalid?
Common causes are trailing commas, missing quotes around keys, single quotes instead of double quotes, and unclosed brackets or braces.
Does the validator send my data anywhere?
No. Validation runs entirely in your browser, so nothing is uploaded.
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