W3C Web Accessibility Initiative

This page contains material related to a presentation at the Web Accessibility Best Practices Evaluation Training in Lisbon, Portugal on 5 July, 2005, as part of the WAI-TIES Project (WAI - Training, Implementation, Education, Support). It is not intended to stand-alone; rather, it is primarily provided as reference material for participants in the training.

Scope of Training and Materials: This one-day training focused on select topics that were particularly suited to the circumstances of this specific training session. It did not to cover all aspects of evaluating Web accessibility, and did not cover all Web Content Accessibility Guidelines (WCAG) 1.0 checkpoints.
No Endorsement or Recommendation of Evaluation Tools: W3C/WAI does not endorse Web accessibility evaluation tools and does not recommend one tool over another. Some tools were listed, demonstrated, and used in activities in this training. Mention of a specific tool does not imply endorsement nor recommendation. WAI does provide a comprehensive list of Evaluation, Repair, and Transformation Tools for Web Content Accessibility.

Evaluating Markup

Shadi Abou-Zahra, W3C WAI

Last updated: 5 July 2005

Valid Markup

Applies to: (X)HTML, CSS, SVG, ...

Valid Markup: Approach

Relative Units

Applies to: (X)HTML and CSS

Relative Units: Approach

Layout Tables

Also very relevant to forms as we will see later

Layout Tables: Approach

Data Tables

Data Tables: Approach

Semantic Elements

Caution: Q and BLOCKQUOTE elements are different
Tip: CODE and PRE elements are also often misused

Semantic Elements: Approach

Natural Language

Limitation: attributes such as ALT or TITLE

Natural Language: Approach