StudentTools
All tools

JSON validator

Check whether your JSON is valid and see the line and column of any error.

How to use the JSON validator

  1. Enter your details in the boxes above.
  2. The result updates instantly as you type.
  3. Copy or download the result when you’re happy with it.

Why use it here

  • Free. No sign-up, no limits, no watermark.
  • Private. Runs in your browser, so nothing is uploaded.
  • Anywhere. Works on phones and computers.

Questions about the JSON validator

Is the JSON validator free?

Yes, completely free, with no sign-up, no limits on use and no watermark.

Is my information saved or sent anywhere?

No. Everything is worked out in your browser. Some entries are remembered on this device only, so they’re still there next time.

Does it work on my phone?

Yes. It works in any modern browser on Android, iPhone, Windows and Mac, with nothing to install.

Related tools

Need help? Chat with Amaar
More

What should we do with this file?