This is a modified version of the YUI CSS/Javascript Compressor. It contains the following new Ant Filter classes: - com/yahoo/platform/yui/compressor/YUIFilter.java - com/yahoo/platform/yui/compressor/CssFilter.java - com/yahoo/platform/yui/compressor/JsFilter.java Thus one may use them e.g.: Furthermore the JavaScriptCompressor got some improvements, so that it consumes less eden/tenured space (dueto lazy init of obfuscation symbol tables) and thus avoids Java Out Of Memory Exceptions when processing a lot of JS files. Also this results in an perf improvement of factor ~ 10 wrt. to compression of the YUI js files using an equivalent copy task as described above.