Facelets technology is introduced from JavaServer Faces 2.0, is the preferred presentation technology for building JavaServer Faces technology-based web applications. Facelets is a powerful but lightweight page declaration language that is used to build JSF views using HTML style templates and to build component trees. Facelets features include the following:

• Use of XHTML for creating web pages
• Support for Facelets tag libraries in addition to JavaServer Faces and JSTL tag libraries
• Support for the Expression Language (EL)
• Templating for components and pages