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CSS HTML Validator and Accessibility

Posted: Sat Feb 21, 2009 11:58 pm
by Albert Wiersch
CSS HTML Validator helps check for accessibility issues based on WCAG 1.0, WCAG 2.0, and US Government Section 508 federal standards.

And here's a screen shot:


About WCAG Accessibility

CSS HTML Validator helps you comply (but cannot guarantee compliance) with the W3C's Web Content Accessibility Guidelines 1.0 (WCAG 1.0) and 2.0 (WCAG 2.0). These are guidelines for web developers and developers of authoring tools to help make them more accessible to people with disabilities.

More about WCAG 2.0 checking from the online documentation

About Section 508 Accessibility

CSS HTML Validator helps an organization comply (but does not guarantee total compliance) with US government Section 508 accessibility requirements, specifically subpart B 1194.22 for web-based intranet and internet information and applications. Below is section 1194.22 (a)-(p):

· (a) A text equivalent for every non-text element shall be provided (e.g., via "alt", "longdesc", or in element content).
· (b) Equivalent alternatives for any multimedia presentation shall be synchronized with the presentation.
· (c) Web pages shall be designed so that all information conveyed with color is also available without color, for example from context or markup.
· (d) Documents shall be organized so they are readable without requiring an associated style sheet.
· (e) Redundant text links shall be provided for each active region of a server-side image map.
· (f) Client-side image maps shall be provided instead of server-side image maps except where the regions cannot be defined with an available geometric shape.
· (g) Row and column headers shall be identified for data tables.
· (h) Markup shall be used to associate data cells and header cells for data tables that have two or more logical levels of row or column headers.
· (i) Frames shall be titled with text that facilitates frame identification and navigation.
· (j) Pages shall be designed to avoid causing the screen to flicker with a frequency greater than 2 Hz and lower than 55 Hz.
· (k) A text-only page, with equivalent information or functionality, shall be provided to make a website comply with the provisions of this part, when compliance cannot be accomplished in any other way. The content of the text-only page shall be updated whenever the primary page changes.
· (l) When pages utilize scripting languages to display content, or to create interface elements, the information provided by the script shall be identified with functional text that can be read by assistive technology.
· (m) When a web page requires that an applet, plug-in or other application be present on the client system to interpret page content, the page must provide a link to a plug-in or applet that complies with §1194.21(a) through (l).
· (n) When electronic forms are designed to be completed on-line, the form shall allow people using assistive technology to access the information, field elements, and functionality required for completion and submission of the form, including all directions and cues.
· (o) A method shall be provided that permits users to skip repetitive navigation links.
· (p) When a timed response is required, the user shall be alerted and given sufficient time to indicate more time is required.

CSS HTML Validator includes validator messages to help comply with (a), (e), (f), (g), (h), and (i). Please note that simply complying with the validator messages is still no guarantee that a page is in full compliance. Full compliance with Section 508 accessibility requirements cannot be checked solely by a computer and requires human judgment.

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Re: CSE HTML Validator and Accessibility

Posted: Fri Jun 25, 2010 9:48 am
by jscar
Are there any plans to include testing for WCAG2?

Re: CSE HTML Validator and Accessibility

Posted: Fri Jun 25, 2010 11:50 am
by Albert Wiersch
jscar wrote:Are there any plans to include testing for WCAG2?
Yes! The upcoming v10 release will support WCAG 2.0 checking.

Re: CSE HTML Validator and Accessibility

Posted: Fri Jul 23, 2010 9:21 am
by Albert Wiersch
jscar wrote:Are there any plans to include testing for WCAG2?
As you probably already know, CSE HTML Validator Std/Pro v10 has now been released and includes support for WCAG 2.0!