Compress and optimize JavaScript code

JavaScript Minifier

Minify JavaScript code by removing unnecessary comments, spaces, tabs, and line breaks. Paste your JS, choose minification options, and get compact code for faster website delivery.

Minify JS Reduce File Size Copy Output

Smaller JavaScript code

Convert development JavaScript into compact production-style code for scripts, widgets, and web projects.

Free JavaScript Minifier Tool

Paste your JavaScript code below and compress it instantly. This tool works in your browser and keeps your code private.

Input JavaScript 0 characters

Minified Output 0 characters

Comments Remove line and block comments where possible.

Safe Mode Safe mode protects quoted strings and template literals.

Quick Sample Load a sample to test the JavaScript minifier quickly.

0 Original Characters

0 Minified Characters

0% Estimated Reduction

JavaScript code minified successfully.

Please paste JavaScript code before minifying.

This JavaScript Minifier is best for normal scripts, snippets, widgets, and theme code. Always test important scripts after minifying production code.

Why Use a JavaScript Minifier?

JavaScript minification helps reduce code size, remove unnecessary characters, and prepare scripts for production use.

Reduce JS File Size

Remove extra spaces, comments, tabs, and line breaks from JavaScript code to create a smaller script file.

Improve Page Speed

Smaller JavaScript files can download faster, helping browsers load and execute website scripts more efficiently.

Browser-Based Privacy

Your JavaScript is processed in your browser, so pasted code is not uploaded to the server for minification.

What Is JavaScript Minification?

JavaScript minification is the process of removing characters that are not required for the browser to run a script. These characters include comments, repeated whitespace, tabs, and unnecessary line breaks.

Developers often write JavaScript with clean spacing and comments for readability during development. Before publishing a live website, minifying JavaScript can help reduce script size and make code delivery more efficient.

How It Works

Compress JavaScript code in three simple steps.

Paste JavaScript

Add your JS file, script snippet, widget code, or theme JavaScript into the input editor.

Choose Options

Select whether to remove comments and use safe mode to protect strings and template literals.

Copy Minified JS

Click the minify button, review the smaller output, then copy or download the compressed JavaScript file.

JavaScript Minifier FAQs

Common questions about compressing and minifying JavaScript code online.

Yes, this JavaScript Minifier is free to use. You can paste JS code, compress it, copy the result, and download the minified output.

The tool is designed to remove unnecessary spacing and comments without intentionally changing script behavior. However, you should always test important scripts after minifying.

Yes. You can choose to remove comments or keep them. Removing comments usually creates smaller JavaScript output.

No. This tool works directly in your browser, so your pasted JavaScript is processed on your own device.

You can minify normal JS files, inline scripts, website widgets, WordPress theme scripts, landing page code, and JavaScript snippets.