Accessibility can enhance your brand, drive innovation, and extend your market reach. Web accessibility depends on several components working together, including web technologies, web browsers and other "user agents", authoring tools, and websites. The W3C Web Accessibility Initiative WAI develops technical specifications, guidelines, techniques, and supporting resources that describe accessibility solutions. These are considered international standards for web accessibility; for example, WCAG 2.
Many aspects of accessibility are fairly easy to understand and implement. Some accessibility solutions are more complex and take more knowledge to implement. When developing or redesigning a website, evaluate accessibility early and throughout the development process to identify accessibility problems early, when it is easier to address them.
Simple steps, such as changing settings in a browser, can help you evaluate some aspects of accessibility. One example that we found had a restroom with the accessibility symbol on the door, but no toilet stall inside large enough for a wheelchair.
However, it also would have been fairly "accessible" for people who are blind. Some may also focus too much on one aspect of accessibility. Public transit systems often paste the accessibility symbol everywhere. In reality, they have a reputation of promoting wheelchair access, at the expense of those who are blind or deaf. Only in the past decade has GPS technology made it feasible for buses to have stops displayed and announced aloud. Parking lots contain perhaps the most famous usage of the accessibility symbol.
Accessible parking spots make an attempt at suiting everyone's needs, such as having more room for mobility devices and being close to entrances for those with limited physical stamina. But when people with disabilities who do not use mobility devices park in those wide spots, the problems with the symbol's "catch-all" approach become apparent as frustration rises from wheelchair or walker users.
Some cities have tried to fix this. In Portland, Oregon, accessible parking placards are classed by disability. For example, some spots are only to be used by people with a "wheelchair user" parking placard.
These situations expose how one symbol cannot represent everyone's different needs. Above image: An accessible playground with modern features, such as ramps and rubber flooring. Accessibility changes over time As improvements are made in both innovations and attitudes, the meaning of "accessible" also morphs into something different. In a previous blog post, we talked about accessible playgrounds. One man has caught the falling woman by her right hand, and is helping her up.
In his left hand, he has taken off his hat and is holding it up, as if to greet the women. He is dressed in nice clothing. The other man, who is more plainly dressed, stands demurely behind the man who is helping the woman to stand. Behind the people and fountain are some bystanders. You cannot tell if the people in the background are watching what the other four are doing. Why is the content of the image above inaccessible?
Below are just some of the reasons why the image above might be inaccessible. All of the text included above regarding what the photograph contains is necessary for a screen reader user to get similar meaning out of it to what someone else might be able to interpret by looking at the image.
There is no meaningful Alternative Text Alt Text on the image. A screen reader user might hear the image's file name, or nothing at all, where someone else might see an image.
There is text on the page of the book, which must be typed out so a screen reader can present it to users. The image is small. It is in a format that does not allow you to zoom in on it to see it very well, so someone with vision impairment may have greater difficulty seeing or understanding it than someone else.
The quality of the image is relatively poor. On a high-resolution screen, it may appear grainy or blurry. It does not have very good color contrast, which may also make it harder for some users to see or read.
What types of content are inaccessible? Images as demonstrated in the example above Tables Videos and audio files Links Lists of items Background and text colors Page structure that isn't clearly defined, such as important information which is conveyed only with reference to a location on a page e. What is the Home Tool Menu? What is My Courses? What is the Message of the Day? What are the Message Center Notifications?
What are the Home Recent Announcements? What is My Calendar? How do I view and edit my Account details? Guest Accounts Only What is Membership? How do I set my preferences? What is My Resources in Home? How do I attach files from My Resources to submissions in my other sites? Introducing Search! What is Worksite Setup?
What is Site Builder? What are Academic Alerts Bullhorns? The web is a highly visual medium, so many accessibility techniques focus on users with visual disabilities, but you do need to remember all categories of disabilities.
My Blind Spot was born from founder Albert J. Among the most significant of these barriers is the hardship of being print disabled.
Those who are print disabled are lacking or limited in the ability to access the written word—on the page, the computer screen, or any other medium. He used it to refer to:.
A person who cannot effectively read print because of a visual, physical, perceptual, developmental, cognitive, or learning disability. My Blind Spot construes print disability as being unable to read standard printed material due to sensory limitations, such as blindness and visual impairment; physical limitations; organic dysfunction; and cognitive issues such as developmental delays, traumatic brain injury, and dyslexia.
Whatever the cause of print disability, the entire print disabled community depends on assistive technologies.
0コメント