Flash delivers interactive rich media experiences that present consistently across many platforms. It is used to add animation, video, and interactivity to Web pages.
- Screen readers and individuals with learning disabilities may have difficulty accessing information that is presented too quickly. Individuals with mobility impairments may be unable to access closely-spaced elements.
- alternative text may be inconsistent when an image appears in more than one place.
- Color alone may be used to group elements or otherwise convey information.
- Keyboard equivalents are not always made available in a presentation.
- Font and backgrounds may provide insufficient contrast or otherwise impair readability.
- Animations may be lacking text equivalents.
- Movies that change quickly may require constant re-reading or cause screen readers to constantly begin reading again from the top.
- Captioning may not be present for audio components.
- Background audio may interfere with spoken content.
- Sounds may interfere with screen readers.
- Buttons may be labeled incorrectly or not at all.
- Elements on the screen may not be read in the correct order.
- Include alternative text for each image that identifies, describes, or conveys the information conveyed by the image.
- Make sure text equivalents are clear and consistent.
- Do not use color alone to group elements or otherwise convey information.
- User interface components, such as buttons and text fields, should be properly sized and spaced.
- Make sure the presentation can be navigated using the keyboard alone.
- Use Text of sufficient contrast and size.
- Include captioning for audio content.
- Provide a means of adjusting the viewing rate.
- Create interactive presentations that do not require precise mouse control.
- Avoid placing interactive elements too close together, and make sure the elements are sufficiently large.