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August 12, 2008 ( PowerHomeBiz ) -
Hanover, MA
-- Website usability is more than just a good navigational structure. A
large number of people have visual or hearing disabilities, so you should
design your website in ways that allow those with either minor or
significant impairments to view and navigate your web content.
(news continued below))
The following tips will help expand your website's usability so that all
users, regardless of their sensory perception and abilities, are able to
take advantage of your web content...
1. Images
Include "alt text" for any images on a webpage. The alt text should
accurately describe the image. The visually impaired will often use screen
readers to discern what the images are, and their screen reader will read
the alt text and tell them what the image is.
2. Transcripts
Any audio recordings should have transcripts available. Hearing impaired
individuals can then read the transcript to learn what is contained in the
audio recordings that are available on the website.
3. Contrast
Website colors should be easy to discern, and contrasted so that they
stand out. Keep in mind that different monitors will display colors slightly
differently. As such, usability research suggests that you should play it
safe and stick with websafe colors. Even individuals with minor visual
impairments may have difficulties in discerning subtle color differences, so
use contrasting colors to highlight important information.
4. Scanable
Write your web copy in a way that makes it easy for visitors to scan. Use
bulleted lists and bold headlines to assist with the web content's
readability.
5. Captcha
In addition to a visual captcha code, provide an optional verbal captcha
code that can be "played" and listened to thru the visitors speakers. If
someone has difficulty with their vision, discerning the characters in a
captcha code can often be an exercise in frustration and futility. Providing
an audio version of the captcha code will greatly assist visitors with
visual impairments.
6. Type Face
Avoid using very small font sizes or overly ornate font styles. The more
standard sans-serif fonts are much easier to read by most users.
7. Obvious
Make links and the website's navigational structure obvious.
8. Consistent
Keep the navigation present and consistent throughout the entire website,
so users know where to look for recurring options without having to search
for them on each page.
9. Avoid Animation
Animated graphics can also be a challenge for visually impaired
individuals. If animation is not a critical component of your message, avoid
using it in your web design. Animated graphics are distracting, and often
aggravating for individuals with focal impairments.
10. Text Only
Many webmasters offer a text-only or "print-friendly" version of
important web content. Consider this as an option, as it will help those
with text readers to completely understand and comprehend your website.
Ultimately, a webmaster's goal should be to make their website accessible
and usable to as many visitors as possible. With minor website changes,
webmasters can be assured they are not accidentally or unintentionally
excluding the disabled population.
About the Author:
Sharon Housley manages marketing for FeedForAll
http://www.feedforall.com
software for creating, editing, publishing RSS feeds and podcasts. In
addition Sharon manages marketing for RecordForAll
http://www.recordforall.com
audio recording and editing software.
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