What is the Tools69 JSON Editor?

A free online JSON editor that lets you edit, modify and update JSON data directly in your browser with real-time validation and syntax highlighting.

How do I edit JSON online?

Upload a JSON file or paste your JSON in the editor. Make changes in the raw editor on the left and see the formatted preview on the right.

Can I validate JSON while editing?

Yes. The editor validates your JSON in real-time and shows whether the JSON is valid or has syntax errors.

Are my files uploaded to your servers?

No. All processing happens locally in your browser. Your files never leave your device.

Is the JSON Editor free?

Yes. It is completely free with no registration required.

Is there a file size limit?

There is no fixed file size limit. Since all processing happens directly in your browser, the maximum file size depends on your device's available memory and browser capabilities. Most modern devices handle large files without any issues.

JSON Editor

Free online JSON editor to edit and modify JSON data instantly.

Drag & drop your file here, or

🔒 Your files never leave your device and are never uploaded to our servers.

Frequently Asked Questions

JSON Editor

Frequently Asked Questions

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JSON Editor

Frequently Asked Questions

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