DevTulz Online

JavaScript Minifier & Beautifier


What is JavaScript Minification?

Minification removes whitespace, comments, and renames variables to shorter names — reducing file size without changing behavior. Beautification does the opposite: it re-formats compressed or minified code into readable, indented code. Minified JS loads faster in browsers, improving page performance and Core Web Vitals scores.

How to Use

  1. Paste your JavaScript into the left panel.

  2. Choose Minify to compress (with options: mangle names, drop console.log, etc.).

  3. Or choose Beautify to reformat minified/ugly code with proper indentation.

  4. Copy the output and use it in your project.

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