Is my JSON uploaded anywhere?

No — formatting and validation run entirely in your browser.

Does it report errors?

Yes, invalid JSON produces a clear message describing the problem.

Everything runs in your browser; nothing is uploaded.

JSON Formatter

Popular

Beautify, validate and minify JSON instantly.

About JSON Formatter

Beautify, validate and minify JSON instantly.

The JSON Formatter is an essential developer utility for reading, debugging and cleaning JSON from APIs, configs and logs — processed locally for privacy.

Frequently asked questions

Yes, completely free with no sign-up.

About JSON Formatter

Frequently asked questions

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