Techniques are described to provide string customization. In an implementation, a menu document is generated that specifies one or more menu items to be included in a menu that correspond to one or more actions available via code of a module. A string document is generated that specifies one or more strings to represent the one or more menu items in the menu. The menu document and the string document are made available to a client that includes the module to output the menu having the one or more strings to represent the menu items. The one or more strings are selectable to cause a corresponding action to be performed by the module.