3. Visual Disabilities Blindness Images with alt text Keyboard support Low vision Font size Color blindness Contrast between font and background Often use Screenreaders http://www.youtube.com/watch?v=2ZkVd8GeYTk&feature=related http://www.youtube.com/watch?v=bQpNYDvQ010&NR=1
4. Hearing Impairments Deafness or hard of hearing Include closed captioning option Videos should include a transcript
6. Cognitive and Neurological Disabilities Dyslexia, ADD, epilepsy Avoid distracting (audio/video) elements that cannot be turned off easily Use of visual or audio frequency can trigger seizures Don’t have too much visual clutter
7. Layout Use DIV for layout Only use TABLE for information Include summary and caption for table
8. Headings Use headings in the correct order H1 H2 H3 H4 H5 H6 Only have one <h1> for document title Never leave this empty!
9. Images Images that are not decorative must have alt text <img alt=“” /> Should present content and function
10. URLs title Use title to describe URLs <a href=“about.php” title=“about”>
11. Links in text Avoid “click here” Too ambiguous Text should make sense by itself
12. Color and Contrast Users may be colorblind Need to check contrast for links Need strong visual cues http://www.flickr.com/photos/wufoo/2919012489/sizes/m/in/photostream/
13. Skip to Content Important for screen reader users Doesn’t have to be seen on your design Use CSS to set it off the page position:absolute; left: -9999px;
14. Forms Cause confusion when they do not use the correct form elements <label for=“add”>Label Here</label> <input name=“add” id=“add” type=“text”/>
15. Tab and Enter Key Only Can you navigate your site using only the tab and enter key? Set up tab order on navigation links Navigate CNN.com using only the keyboard
16. So What? Institutions supported by the government require these Accessibility can affect business Online shopping Can lose a lot of money
17. So What? Accessibility is very important for those of you thinking about a career in web development or user experience For personas it makes sense to include groups of users with disabilities
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