Online JavaScript/CSS Compression Using YUI Compressor

Select a file you want to compress. This tool uses YUI Compressor 2.4.1.

To use, copy/paste your code into the text area or select a file to upload. Then choose your compression type, JS or CSS. Finally, press the compress button.

Compress a JS/CSS code block or file
JavaScript Options

Further Reading

Helping the YUI Compressor
Running your JavaScript code through YUI Compressor results in tremendous savings by default, but there are things you can do to increase the byte savings even further.
Minification vs Obfuscation
A minifier removes the comments and unnecessary whitespace from a program. Depending on how the program is written, this can reduce the size by about half. An obfuscator also minifies, but it will also make modifications to the program, changing the names of variables, functions, and members, making the program much harder to understand, and further reducing its size in the bargain.
The Elements of JavaScript Style [ Part 1 | Part 2 ]
When we talk of style here, we are not talking about fads and fashions, nor are we talking about CSS or conventions of layout or typography. We are talking about timeless qualities of expression which can substantially increase the value of a codebase. For companies whose valuations are are inextricably bound to their codebases, style should be a vital concern.

Changelog

November 7, 2008
  • changed to YUI Compressor 2.4.1
  • added some links to further reading
  • fixed utf-8 encoding
October 7, 2008
  • valid HTML markup for kicks
October 4, 2008
  • added error reporting
  • escape compressed code
October 2, 2008
  • changed to YUI Compressor 2.3.6
  • stopped escaping double quotes
  • hide command

Todo

If you have any feedback, hit me up at gpbmike@gmail.com.