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JSON Prettifier & Minifier

Format JSON or minify to one line.

JSON

Output

{
  "name": "Ada",
  "scores": [
    94,
    88,
    92
  ],
  "active": true
}
JSON Prettifier & Minifier · Generated 4/27/2026 · calcly.app/calculators/other/json-prettifier

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About the JSON Prettifier & Minifier

MethodologyHome

Format JSON or minify to one line. Use this free json prettifier & minifier to get instant results. All calculations run in your browser — nothing is sent to a server.

Frequently asked questions

What does this JSON Prettifier & Minifier do?

Format JSON or minify to one line.

Is it free?

Yes — every calculator on Calcly is free, with no sign-up or account required.

Does it work offline?

The site is a Progressive Web App — after your first visit, most pages work without an internet connection.