Flash is widely used to create advertisement banners and animations during website design. Flash banners can serve their desired purpose only if they are used efficiently and sparingly. As these flash banners may add believability to particular web design, but they have many disadvantages as well. Flash banners can be easily downloaded only if you are connected to high speed connection. When web designer uses too many frames to describe a simple animation then it doesn't enhances the purpose of website rather it hinders it. A bad decision from website developer is enough to convert the site into trash like using too many frames or duplicating the background in every frame etc. Web designer should remember that not all people have flash pluggins installed in their computer so people may lose their patience if they are asked to download pluggins first to view your site. So web developer should provide the option of non flash version along with the flash version, which allows the web visitor to browse through the information.
4. Website will look same in all browsers.
Even after designing some successful websites many web developers love to believe that the website will look same everywhere as it appears on their pc. Whereas in reality different website browser perceive HTML pages in different manner. So website developer should always make it sure that the website is optimised with web standards adopted by different browsers. Also the web resolution varies from pc to pc. Some may prefer to view the website in 1024 X 768 resolutions whereas some may view the website in 800 X 600 resolutions. Most of the web visitors love to view the website in 800 X 600 resolutions, so the web designer should ensure that the website looks good even in that resolution. The width of the tables should be set in percentage rather than in pixels. If the website designer decides to use pixels in any of the website design then it becomes difficult for the viewer to scroll left and right to view the website properly. So to avoid such circumstances during web development the website developer should use percentage while giving assigning the properties to the table because it will help the viewer to view the website properly in any resolution.
The website designer should always remember that website is designed for the visitor.