Illustrator is an industry-standard vector graphics creation application for print and the Web.
Flash and SVG output - preserve your artwork in vector form while exporting it to the Web. When exporting graphics in Flash format, you have the option of exporting the entire graphic to a single SWF file or exporting each layer to a separate frame in a single SWF animation file. Pixel Preview - specify pixels as a global measurement unit for sizing and editing your artwork for the web. You can preview your vector images as they will appear when rasterized in a Web browser. Working in Pixel Preview mode guarantees that your objects will snap to the nearest pixel edge in order to minimize anti-aliasing.