W3C Standards

HTML - XHTML - CSS - Validation

• HTML 4.01 Specification
  This specification defines the HyperText Markup Language (HTML), the publishing language of the World Wide Web. This specification defines HTML 4.01, which is a subversion of HTML 4.
  • Dave Raggett - Getting Started with HTML
    This page will teach you how to: start with a title, add headings and paragraphs, add emphasis to your text, add images, add links to other pages, and use various kinds of lists.
  • Dave Raggett - Introduction to Advanced HTML
    This page will teach you how to: force line breaks, introduce non-breaking spaces, use entities for special characters, link into the middle of pages, use preformatted text, flow text around images, define clickable regions within images, create tables, use roll-overs and other tricks.
  • Dave Raggett - Introduction to CSS
    This page will teach you how to: use the style element, link to separate style sheets, set page margins, set left and right and first-line indents, set the amount of whitespace above and below, set the font type, font style and size, add borders and backgrounds, set colors with named or numeric values, and add style for browsers that don't understand CSS.
• XHMTL 1.0
  This specification defines the Second Edition of XHTML 1.0, a reformulation of HTML 4 as an XML 1.0 application, and three DTDs corresponding to the ones defined by HTML 4.
• XHTML 1.1
  This Recommendation defines a new XHTML document type that is based upon the module framework and modules defined in Modularization of XHTML.
• Guidelines for Authoring
  Here are some rough guidelines for HTML authors. If you use these, you are more likely to end up with pages that are easy to maintain, look acceptable to users regardless of the browser they are using, and can be accessed by the many web users with disabilities.
• HTML/XHTML Validation Tool
  The W3C Markup Validation Service checks HTML documents for conformance to W3C HTML and XHTML Recommendations and other HTML standards.

Validate your HTML and/or XHTML with the W3C Validation Service. Enter your website address in the field below (example: /). Click the Validate Page button and the W3C validation results will be presented to you. Use your back button to return to this page.

Accessibility

• Web Accessibility Initiative (WAI)
  The World Wide Web Consortium's (W3C) commitment to lead the Web to its full potential includes promoting a high degree of usability for people with disabilities. WAI, in coordination with organizations around the world, pursues accessibility of the Web through five primary areas of work: technology, guidelines, tools, education and outreach, and research and development.
  • Overview of Web Accessibility Initiative
    This presentation covers: What is Web accessibility? Why is Web accessibility important for people with and without disabilities? What is the World Wide Web Consortium doing to address Web accessibility? What resources are available to help make Web sites and Web applications accessible? And, what actions are useful in promoting Web accessibility?
  • Policies Relating to Web Accessibility
    The policy links on this page are compiled as a resource by the World Wide Web Consortium's (W3C) Web Accessibility Initiative (WAI) Education and Outreach Working Group (EOWG). This page is not a comprehensive or definitive resource for all applicable laws and policies regarding Web accessibility.
• Alternative Web Browsing
  The purpose of this collection is to reflect the whole range of approaches used for browsing. If you design Web pages, then this will allow you to try out a particular browsing method with specific sites as a way of checking how usable they are for a given browser, or combination of browser and screen-reader, voice-recognition, or other adaptive systems. If you are a user who may be interested in finding the most effective method for you, then you should also find useful information here.
• Authoring Tool Conformance Evaluations
  The Authoring Tool Accessibility Guidelines (ATAG) Working Group (AUWG) develops guidelines and techniques to assist authoring tool software developers to make tools, and the content that the tools generate, more accessible to people with disabilities.
  • Microsoft Accessibility
    Business leaders today are looking for solutions to empower and retain employees - and accessible technology can help do just that. These resources will help you discover the business value of integrating accessible technology into your organization's technology plans, and learn about an effective 5-step implementation process.
  • Macromedia Accessibility
    Create and manage rich web content that meets accessibility, data transfer, and security standards, plus instantly publish and manage policies and procedures online.
• Evaluation, Repair and Transformation Tools for Web Content Accessibility
  This is a collection of information about evaluation, repair, and transformation tools useful for Web content developers and Web users who wish to make the Web more accessible.
• WAI Site Map
  This site map and index lists W3C documents relating to accessibility of the Web. This page lists just about everything you'll need to know about Web Accessibility.

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