Is JSONFormat.dev secure for sensitive data?

Yes. All processing happens locally in your browser. Your data is never uploaded or stored.

What can I do with JSONFormat.dev?

You can validate, format, minify, repair broken JSON, and even undo repairs—all in your browser.

The tool will highlight the exact line and position of the error and optionally offer to repair the structure.

Yes. JSONFormat.dev is designed to handle large JSON documents efficiently using browser-based processing.

Yes. The Live Mode option lets you validate and format JSON automatically as you type.

Absolutely. All features are completely free and available without registration.

What is a JSON Formatter?

A JSON Formatter improves readability of JSON by organizing it with proper indentation and line breaks.

Is JSONFormat.dev secure?

Yes, all operations happen entirely within your browser. No data is sent, stored, or logged externally.

Can I fix broken or invalid JSON?

Absolutely. The repair feature intelligently corrects common JSON formatting errors like missing brackets or quotes.

Does the tool have an undo feature?

Yes. After formatting or repairing JSON, you can click "Undo" to restore your previous input.

What does Live Mode do?

Live Mode validates and formats your JSON instantly as you type—ideal for quick debugging or real-time editing.

Can I upload a JSON file instead of pasting code?

Yes. You can upload `.json` files directly and process them just like text input.