When you want to compile your GWT module for only specific browser, you can change UserAgent.gwt.xml inside gwt-user.jar in package com.google.gwt.user. Find this text and change it as you wish: <define-property name="user.agent" values="ie6,gecko,gecko1_8,safari,opera"> gecko - Mozilla ,gecko1_8 - FireFox I want to compile for only IE , then I change it into <define-property name="user.agent" val
![GWT Compiler - Compiling for one browser and also supporting hosted mode](https://cdn-ak-scissors.b.st-hatena.com/image/square/9956a9020c92fae95ca02b86bf28a7fc9824c424/height=288;version=1;width=512/http%3A%2F%2Flh3.ggpht.com%2F_vz6w6628a_4%2FSs2ZQHhFIGI%2FAAAAAAAADM8%2FbLhIijcY74Q%2Fw1200-h630-p-k-no-nu%2FBefore%2520Script%2520Added_thumb%255B10%255D.png%3Fimgmax%3D800)