One of W3C's primary goals is to make theWeb and its communication and interaction benefits available to all people, whatever their hardware, software, network infrastructure, native language, culture, geographical location, or physical or mental ability [1]. Thus, accessibility is taken into account in the development of all W3C technologies, and a series of Notes have been prepared to document these features.
Developers of web pages and applications, graphics, and multimedia, should integrate the accessibility features of W3C technologies in their developments to benefit users with visual, auditory, motor and/or cognitive disabilities.
CSS benefits accessibility primarily by separating document structure from presentation. Style sheets were designed to allow precise control - outside of markup - of character spacing, text alignment, object position on the page, audio and speech output, font characteristics, etc. By separating style from markup, authors can simplify and clean up the HTML in their documents, making the documents more accessible at the same time.
This Note summarizes the features of the Cascading Style Sheets (CSS), level 2 Recommendation known to directly affect the accessibility of Web documents. Some of the accessibility features described in the Note were available in CSS1 as well.
Multimedia presentations rich in text, audio, video, and graphics are becoming more and more common on the Web. They include newscasts, educational material, entertainment, etc. Formats such as SMIL can be used to create dynamic multimedia presentations by synchronizing the various media elements in time and space. Authors can make SMIL presentations accessible to people with disabilities by observing the principles discussed in the "Web Content Accessibility Guidelines 1.0". This Note applies the principles of the Web Content Accessibility Guidelines to SMIL 1.0 and explains which SMIL 1.0 features will help you create accessible presentations.
This Note summarizes the accessibility features of the Synchronized Multimedia Language (SMIL), version 1.0 Recommendation.
Scalable Vector Graphics (SVG) is an Extensible Markup Language (XML) application for producing Web graphics which offers a number of features to make graphics on the Web more accessible than is currently possible, to a wider group of users. Users who benefit include users with low vision, color blind or blind users, and users of assistive technologies. A number of these SVG features can also increase usability of content for many users without disabilities, such as users of personal digital assistants, mobile phones or other non-traditional Web access devices.
This Note summarizes the accessibility features of the Scalable Vector Graphics (SVG) 1.0 Specification, but are equally applicable to the SVG 1.1 Specification.
The Web Accessibility Initiative (WAI), joined forces with the W3C HTML Working Group in the design of HTML 4.0, which became a W3C Recommendation in December, 1997. For this release of the World Wide Web's publishing language, the WAI group sought remedies for a number of authoring habits that cause problems for users with screen readers, audio browsers, and text-only browsers.
This Resource describes how how WAI contributions to HTML 4.0 (in conjunction with style sheets) allow authors to avoid accessibility pitfalls even as they create more attractive, economical, and manageable pages. in particular the resources addresses the issues of structured documents, style sheets, alternative content, and navigation and orientation.
[1] - W3C in Seven Points