This document discusses using SVG icons on websites. It covers different formats for icons like PNG and icon fonts, then focuses on SVG. SVG is explained as scalable vector graphics in XML format that can contain paths and shapes. Benefits of SVG include scalability, performance, accessibility, and ability to style with CSS. The document demonstrates exporting SVG from tools, optimizing with SVGO, embedding SVG in HTML and CSS, using SVG icon systems, and animating SVG with libraries like GreenSock. Resources for further SVG information and use are provided.