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Handy Browser Tools

JSON Minifier

Paste formatted JSON below to strip all unnecessary whitespace. The tool validates your JSON while minifying and shows how many bytes you saved.

Private by default: processing stays on your device
YOUR JSON

Paste or type JSON to minify

Smaller JSON, instantly.

Minifies as you type; size savings show below.

Minified output

Good to know

Minifying strips whitespace only — your data is unchanged. Everything runs in your browser.

Example: formatted JSON → minified

Input

{
  "name": "Ada",
  "active": true
}

Output

{"name":"Ada","active":true}
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Frequently asked questions

Why minify JSON?

Minified JSON is smaller to store and faster to transfer, which is useful for API payloads, config files and embedded data. It's functionally identical to formatted JSON.

Is my data uploaded anywhere?

No. The minifier runs entirely in your browser; nothing is sent to a server.

Will minifying change my data?

No. Only insignificant whitespace between tokens is removed. Strings, numbers and structure are untouched.

Related tools

JSON Formatter

Format, beautify and validate JSON instantly in your browser.