</>
The Devs Tools
</>

JSON Validator

Paste your JSON below to validate its syntax. Invalid JSON shows the exact line and column of the error; valid JSON can be reformatted with one click.

JSON

Frequently Asked Questions

Is my JSON data uploaded to a server?
No. Validation and formatting happen entirely in your browser — your JSON never leaves your device.
Why does it show a line and column number?
When your JSON has a syntax error, the validator pinpoints exactly where the parser failed so you can fix it quickly.