JSON Minifier

Strip every unnecessary character from a JSON document and see how many bytes you saved. Minified JSON parses to exactly the same value; only whitespace is removed.

JSON

Minified

Result will appear here

Ready. Press Minify or Ctrl+Enter.

How to use the JSON Minifier

Paste formatted JSON into the input pane.
Press Minify.
Copy the compact single line result.

Example

Watch the status line for the size reduction.

{
  "name": "json-utils",
  "version": "1.0.0",
  "private": false,
  "tags": ["json", "tools"],
  "author": { "name": "Ada", "active": true },
  "score": 9.5,
  "notes": null
}

Frequently asked questions

Does minifying change my data?

No. Whitespace between tokens is not part of the data. Keys, values, and ordering are preserved.

Why minify JSON?

Smaller payloads transfer faster and cost less to store, which matters for config files, fixtures, and embedded data.