The vital part for a website is the graphics used in it and it is very important in order to get approval from all major ads related organization such as Google adsense, adworth etc. The themes of a site can be from any type such as wordpress theme, joomla theme and so on. Also the templates can be a joomla template or a wordpress template which so ever suits your site information and also depending upon it the web optimization also can be achieved.
Also we should know the techniques of web graphics. If the web graphics is not used properly it may make the users to lose interest in the sites or sometimes results in increase in loading time of your website. These graphics used in the sites need to be highly rich in appearance in order to get large number of visitors. The most important things are the banner, text images, logo design and other content buttons.