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Usable?...Or Not?...Factors Affecting the Usability
of Web Sites, by Rakhi Rajani and Dr Duska Rosenberg
Issues Affecting the Design of Web Sites
Consideration |
Description |
Maintenance |
Once posted, a page has to be frequently maintained to
incorporate the ever-changing web technology. Also, if the developer does
not maintain the links, then these too have to be checked to ensure that
the owner has not withdrawn the page. |
Speed Of Access |
This is perhaps one of the most contentious issues in Web
design and often involves conflict. To aid the speed of retrieval it is
essential that only necessary information be displayed. Graphic images
that aid usability may cause sites to download slower. It may thus be necessary
to reduce the image content of a page and substitute it with text. An apt
balance between speed and design for usability should be established. |
WYSIWYG |
With the Web, it IS true to say that what YOU
see is what YOU get. However, what YOU see is not always
what everyone else gets. Every Web user will have different browsers, different
screen settings, different graphics cards and different computers. Designing
for the average majority is the key, but still difficult. |
Navigational Aid |
Navigational aids such as navigational bars at the top
of a page, a content index, or site map on every page of the site will
aid usability. As many Web sites are non-linear, the use of tools to aid
navigation around a complex site that spans over many pages is essential
in helping a user find their way. Link colours should be consistent. The
destination of links should be obvious. |
Anonymity |
It is possible to predict a 'possible' user base, but web
designers are essentially designing for an 'unknown' audience. |
Design Traits |
These include Clarity, Accessibility, Consistency, Simplicity,
Navigability, Integratability, Feedback, Informativeness of Displays and
Speed. |
Limitations Of HTML |
HTML structures a web page, but it is not a layout tool.
The use of tables, frames and tags etc allows for some layout procedures,
but these are not ideal. However, as technology is constantly changing,
new versions of HTML (v4.0) and DHTML (that some browsers support) are
evolving, as are other techniques such as the use of Java and XML etc.
Also, certain typefaces are not supported, and designers use graphics instead,
but these slow down the access speed. Thus, certain conventional design
traits are unattainable. |
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