9个最好用的 JavaScript 代码压缩工具，你在用吗？

1. JavaScript Minifier

It is a nice looking tool with an API to minify your js code.

2. JSMIni

If you want to minify your JavaScript or jQuery files quickly and easily, turn to jsMini. Just copy and paste your source code, select whether you want basic or full compression, and then minify your code.

3. JSCompress

JSCompress.com is an online javascript compressor that allows you to compress and minify your javascript files. Compressed javascript files are ideal for production environments since they typically reduce the size of the file by 30-90%. Most of the filesize reduction is achieved by removing comments and extra whitespace characters that are not needed by web browsers or visitors.

4. Minifier

A simple tool for minifying CSS/JS without a big setup. It reworks URLs in CSS from the original location to the output location. It automatically resolves @import statements in CSS.

5. Gulp.js

Gulp.js is the streaming build system. It’s use of streams and code-over-configuration makes for a simpler and more intuitive build. By preferring code over configuration, gulp keeps simple things simple and makes complex tasks manageable. By harnassing the power of node’s streams you get fast builds that don’t write intermediary files to disk. Gulp’s strict plugin guidelines assure plugins stay simple and work the way you expect.

6. Uglifyjs

This package implements a general-purpose JavaScript parser/compressor/beautifier toolkit. It is developed on NodeJS, but it should work on any JavaScript platform supporting the CommonJS module system (and if your platform of choice doesn’t support CommonJS, you can easily implement it, or discard the exports.* lines from UglifyJS sources).

7. Grunt

Grunt is a task-based command line build tool for JavaScript projects. It has the following predefined tasks that you can use in your project: Concatenate files, Validate files with JSHint, Minify files with UglifyJS, Run unit tests with node unit and etc.

8. Koala

Koala is a GUI application for Less, Sass, Compass and CoffeeScript compilation, to help web developers to use them more efficiently. Koala can run in windows, linux and mac.

9. Prepros

Prepros is a tool to compile LESS, Sass, Compass, Stylus, Jade and much more with automatic CSS prefixing, It comes with built in server for cross browser testing. It runs on windows, mac and linux.

more method,please focus  wechat ：ihouxue