What is Accessibility?
- Making Your Web Site Accessible
Checklist for Accessibility
Must Have Items - Should
Have Items - Try To Have Items
Items for More Experienced Webmasters
Apply These Items if Your Use These Special Features
| Applets & Scripts | |
| Blinking, Moving, or Flickering Content | |
| Color | |
| CSS | |
| Forms | |
| Frames | |
| Graphs |
Nongraphical browsers and screen readers cannot reveal images (and other non-text
elements) to visually impaired users. To communicate the information users need,
it is important to associate alternative text with all images, particularly
active images such as links or buttons. It is also necessary to provide text
equivalents for other non-text elements (graphical representations of text -
including symbols, image map hot spots, animations - animated GIFs, applets
and programmatic objects, ASCII art, frames, scripts, images used as list bullets,
spacers, graphical buttons, sounds (played with or without interaction), stand-alone
audio files, audio tracks of video, and video.
The alternative text should be meaningful, like "home page" or "search"
or "go." When images are not active links, however, use alternative
text appropriately. A person who listens to information cannot ignore text as
a person viewing the page can ignore an image. If images are not important or
if they are redundant, then assign empty alternative text so that the assistive
technology and nongraphical browser ignore the image.
The use of alternative text is not just for people who have visual impairments;
alternative text is also used by text-only browsers, displayless devices, such
as mobile phone browsers, and by search engines. Links that are images are not
accessible to voice recognition software unless the author has provided alternative
text for the image. The user, navigating the Web with voice recognition, can
say "click home page" for the image whose alternative text is "home
page". On any given web page, it is important that each image acting as
a link has a unique ALT tag for most voice recognition software to work effectively.
Images
Graphs and Charts - LONGDESC, D
LINK, Invisible D LINK
What is Accessibility?
- Making Your Web Site Accessible
Checklist for Accessibility
Must Have Items - Should
Have Items - Try To Have Items
Items for More Experienced Webmasters
Apply These Items if Your Use These Special Features
| Applets & Scripts | |
| Blinking, Moving, or Flickering Content | |
| Color | |
| CSS | |
| Forms | |
| Frames | |
| Graphs |