Code Minifier

Minify JavaScript, CSS, HTML, PHP, Python, SQL, JSON, plaintext, and more — all in your browser.

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What Is a Code Minifier?

A Code Minifier reduces the size of source code by removing unnecessary characters — whitespace, comments, and redundant syntax — without altering its behavior. Smaller code means faster downloads, reduced bandwidth, and better performance for websites and applications.

This tool supports JavaScript & TypeScript (via Terser), CSS (via clean-css), HTML (via html-minifier-terser), and a smart basic minifier for PHP, Python, SQL, JSON, and plaintext — all running 100% in your browser. Minification is a standard part of modern web development build pipelines, but this tool lets you quickly minify code snippets without setting up a build system.

Common use cases include reducing file sizes for production deployment, preparing code snippets for sharing, and comparing original vs. minified sizes to measure optimization impact.

How to Use This Code Minifier

  1. Select your language — Choose JavaScript, TypeScript, CSS, HTML, JSON, PHP, Python, SQL, or Plaintext from the dropdown.
  2. Paste your code — Enter your source code in the input textarea, or click Example to load sample code.
  3. Customize options — Toggle minification options that appear based on the selected language (e.g., mangle variable names for JS, remove empty rules for CSS).
  4. Click Minify — Press the Minify button to compress your code. Size statistics are displayed showing original and minified sizes.
  5. Copy the result — Use the copy button to copy the minified output to your clipboard for use in your project.

Frequently Asked Questions

Which languages are supported?

Advanced: JavaScript, TypeScript (Terser), CSS (clean-css), HTML (html-minifier-terser). Basic: JSON, PHP, Python, SQL, and plaintext — comments and extra whitespace are stripped safely.

Is my code stored on a server?

No. All processing happens entirely in your browser using client-side libraries. Your code never leaves your device.

Will minification break my code?

Advanced minifiers (Terser, clean-css) are designed to preserve functionality. The basic minifier only removes comments and extra whitespace — it cannot change logic. Always test minified code in your target environment.

What is the difference between minification and beautification?

Minification removes whitespace and comments to reduce file size. Beautification (or formatting) adds consistent indentation and spacing to improve readability. They are opposite operations — this tool minifies, while our formatter tools beautify code.

Can I minify multiple files at once?

This tool processes one block of code at a time. For bulk minification of many files, consider integrating a minifier like Terser or clean-css into your build pipeline.

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