Developer Tools

JSON Formatter

View and inspect JSON instantly with JSON Formatter — free, fast, and completely private. Nothing you paste is ever sent to a server. Beautify, validate, and collapse nested data.

Instant & Fast: High-performance utility tools ready for immediate use.

Free Forever • No Watermarks • No Sign-up

How to use JSON Formatter

Open JSON Formatter — no account or login needed.

Select your file or input your data into the tool panel above.

Adjust the settings, dimensions, or parameters to your preference.

Click process and save your result directly to your device.

Frequently Asked Questions

Does this validate JSON as well as format it?

Yes — invalid JSON is flagged with a clear error message showing the exact line and position of the problem.

Can I format very large JSON files?

Is my data sent anywhere?

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