JSON Validator - Free, Instant, In Your Browser
Check whether JSON is valid and see exactly where the error is, with the line and column. Type or paste your text and the result appears right away.
How to use JSON Validator
- 1Paste your text or data into the input box above.
- 2JSON Validator runs instantly, right in your browser.
- 3Copy the result or use it directly.
Your file is processed in your browser and is never uploaded.
Frequently Asked Questions
Is my data sent to a server?
No - everything runs entirely in your browser with JavaScript. Nothing is uploaded.
Is it free? Do I need an account?
Yes, it is free, and there is nothing to sign up for.