Extremely large files not only hog space on your server but take an inordinately long time to load in a browser. Use small files for maximum impact. Use .jpg file format for photographs and .gif file format for small images and icons. Insert ALT TEXT tags for viewers using non-graphical browsers Color should be used wisely as it has a significant effect on your viewer. Depending on the platform and monitor used by the viewer, the color may displayed quite differently.
High contrast is necessary for clear, readable text.
Content should be accurate and updated on a regular basis if the web page is to be useful for viewers. When the content is no onger applicable, remove it. Web pages require regular maintenance, if just to answer email inquiries from the web page. Links should be checked regularly to correct or remove those which don't connect. If you leave an organization, remove your web pages .