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Homelab

JSON formatter and validator

Paste JSON to check the syntax with the exact line and column of an error, pretty-print it with indentation or minify it. Data never leaves the browser.

Everything runs in your browser: nothing you enter is sent anywhere.

Common mistakes: a comma after the last item, single quotes instead of double, unquoted keys and comments: fine in JavaScript, invalid in JSON. Home Assistant YAML: YAML checker.

More: Base64 · URL encoder · Hash generator · UUID generator · Unix time · JWT decoder.

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