JSON Formatter Online — Free, No Sign-up

Format, validate and compress JSON in your browser. Paste JSON, get a readable result instantly, with no account and no data sent to a server for formatting.

Open the free tool → — the tool automatically shows English when your browser language is not Chinese, via the site's built-in language switcher.

How to use it

Paste your JSON into the tool, click format, and copy the cleaned result. It also helps when an API returns a single-line JSON blob that is hard to read.

Related tools

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What is JSON formatting?

See the tool above for the live result. This page is a short guide, not a replacement for the tool itself.

Why format JSON?

See the tool above for the live result. This page is a short guide, not a replacement for the tool itself.

Is my JSON sent to a server?

See the tool above for the live result. This page is a short guide, not a replacement for the tool itself.