JSON Validator

Use the free online JSON Validator tool. Fast, private and easy to use — runs entirely in your browser. Part of our Web & Developer Tools collection.

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Is the JSON Validator free to use?

Yes. The JSON Validator is completely free with no sign-up, no limits and no watermarks. You can use it as many times as you like.

Is the JSON Validator safe and private?

Absolutely. The JSON Validator runs entirely in your browser, so your data never leaves your device and nothing is uploaded to a server.

Do I need to install anything to use the JSON Validator?

No installation is needed. The JSON Validator works instantly online in any modern browser on desktop, tablet or mobile.

Does the JSON Validator work on mobile phones?

Yes. The JSON Validator is fully responsive and works smoothly on iPhone, Android and any other device.