JSON Validator
Check JSON for syntax errors.
How to use JSON Validator
- 1Paste or type your text
- 2Choose your options
- 3Read the result instantly
- 4Copy the output
About this tool
Validate JSON and get the exact error position when something is wrong.
FAQ
Is JSON Validator really free?
Yes. Every tool on freetools.me is free to use with no account, no watermark and no usage cap.
Do my files get uploaded?
No. Your text stays in the browser tab — nothing is transmitted or stored.