A01 chaf6542 06 se fm indd

Accessibility 

legislation

Legislation intended to 

protect users of websites 

with disabilities, including 

those with visual 

disability.

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Chapter 11  Analysis and design

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Priority 3 (Level AAA). A Web content developer may address this checkpoint. Otherwise, 

one or more groups will find it somewhat difficult to access information in the document. 

Satisfying this checkpoint will improve access to Web documents.

So, for many companies the standard is to meet Priority 1 and Priority 2 or 3 where practical.Some 

of the most important Priority 1 elements are indicated by these ‘Quick Tips’ from the WAI:

● 

Images and animations. Use 

ALT tags

 to describe the function of each visual.

● 

Image maps. Use the  client-  side map and text for hotspots.

● 

Multimedia. Provide captioning and transcripts of audio, and descriptions of video.

● 

Hypertext links. Use text that makes sense when read out of context. Avoid ‘click here’.

● 

Page organisation. Use headings, lists and consistent structure. Use CSS for layout and 

style where possible.

● 

Graphs and charts. Summarise or use the longdesc attribute.

● 

Scripts, applet and  plug-  ins. Provide alternative content in case active features are inacces-

sible or unsupported.

● 

Frames. Use the noframes element and meaningful titles.

● 

Tables. Make line-by-line reading sensible. Summarise.

● 

Check your work. Validate. Use the tools, checklist and guidelines at 

www.w3.org/TR/

WCAG

.

Figure 11.23 is an example of a site which meets brand and business objectives while supporting 

accessibility through resizing of screen resolution, text resizing and alternative image text.

ALT tags

Alt tags (alternative tags) 

appear after an image 

tag and contain a phrase 

associated with that 

image.

Activity 11.4

Allowing for the range in access devices

One of the benefits of accessibility requirements is that it helps website owners and 

web agencies consider the variation in platforms used to access websites.