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Toolkit, Links and More: Standards and Validation
Standards
All the Web development standards can be found at the World Wide Web Consortium web site.
Besides the technical standards there is a useful Web Content Accessibility Guidelines 2.0 Checklist for web developers who are serious about making their web sites accessible to users with disabilities.
Validation
The W3C Markup Validation Service is a free service that checks Web documents in formats like HTML and XHTML for conformance to W3C Recommendations and other standards.
The W3C CSS Validation Service is a free service that checks Cascading Style Sheets (CSS) in (X)HTML documents or standalone for conformance to W3C recommendations.
WebXact used to be a free online service to test single pages of web content for quality, accessibility, and privacy issues. As of February 1, 2008 the Watchfire WebXact and Bobby Online products are no longer publicly available. Other free online accessibility validators are:
- ATRC Web Accessibility Checker - online evaluations or download the free software
- Functional Accessibility Evaluator of the University of Illinois at Urbana-Champaign
- HiSoftware Cynthia Says Portal
- Ocawa Web Accessibility Expert - allows a limited number of free evaluations per day.
Also have a good look at the Accessibility Conformance Evaluation guidelines at the W3C web site.
Validate your RSS or Atom feed by URL or by direct input at the W3C Feed Validation Service.
Link checker
The W3C Link Checker Service is a free service that checks the integrity of links on published Web pages.