It would be nice if designers could assume website users had up-to-date browsers, computers, and Internet connections. However, planning for those who have less than optimum software, hardware, and connection speeds will get better results. There will not be users who become frustrated from an inability to view the site. Users will not be left dangling as they wait for huge files to load.
Other issues relate to screen size and browser specifications. Design sites that respect the common 800 by 600 pixel screen size. Do not build sites around the latest browser versions, a particular browser, or a browser that requires a special plug-in. Disregarding these suggestions will result in a number of dissatisfied users (Lynch & Horton, 2001).