utiloralab.
Developer tools / Free online tool

JSON Minifier

Remove unnecessary whitespace from JSON for a compact, copy-ready result.

Runs in your browser
0 characters
OUTPUT
Your result will appear here

A little input. A useful output.

Ctrl + Enter to run

Your input stays on your device. No uploads. No account. Just your result.

How to use JSON Minifier

  1. 01

    Paste valid JSON.

  2. 02

    Minify the document.

  3. 03

    Download or copy the compact result.

A quick example

Try a simple example

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

About JSON Minifier

JSON minification removes formatting characters outside strings. It reduces text size while retaining the parsed structure.

When it comes in handy

  • Prepare compact fixtures.
  • Reduce configuration whitespace.

Why use it here?

  • Runs locally in your browser.
  • No account needed; copy or download your result.

A few things to keep in mind

  • Does not compress network transport.
  • JavaScript numeric precision limits apply.

Good questions. Simple answers.

Are spaces inside strings removed?

No. Spaces inside JSON string values are preserved.

Is my input uploaded?

No. This tool processes your input in your browser. Your input and output are not included in analytics.

A good next step

Useful tools that go well together.

Explore category