YUI Compressor 发布了 2.4.7 版本，该版本包含对 CSS 最小化处理的一些问题，JS 压缩方面没做任何改变。

CSS minification

• Fixed data URL handling, so that it large data URL values don’t crash or slow down CSS Compression.
• Fixed hex color value compression logic (#AABBCC -> #abc), so that the Compressor doesn’t inadvertently compress ID selectors (#AddressBook {…}) .
• All Java CSS Compressor fixes have been ported to the JS Compressor.
• All fixes are backed up by unit tests.

下载地址：download.