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Online JSON Minifier

No installation needed — works in any modern browser. Removes whitespace from JSON to reduce its size.

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Result

Minified JSON

{"hello":"world","n":42}

Bytes saved

5 bytes

Notes

  • · Runs entirely in your browser — nothing is uploaded.

Online JSON Minifier — How It Works

Online JSON Minifier — How It Works

No installation needed — works in any modern browser. This tool removes all unnecessary whitespace from JSON — indentation, line breaks, and spaces around colons and commas — producing the most compact valid JSON.

Example

// before
{
  "hello": "world",
  "n": 42
}

// after
{"hello":"world","n":42}

Why minify JSON

  • Smaller payloads — useful for API responses, config files, or embedding JSON in other files.
  • Same data — minifying only removes whitespace; the parsed value is identical.

Try the Online JSON Minifier — instant results, no sign-up.

FAQ

Is this free?

Yes — the Online JSON Minifier runs entirely in your browser, no sign-up required.

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