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Requirements/Analysis and changelog for Transitioning from WCAG 1.0 to 2.0 Resource Suite

Page Contents

This is a requirements analysis for a suite of documents that will recommend strategies and best practices for organizations making the transition from WCAG 1.0 to WCAG 2.0.

Purpose, Goals, Objectives

The purpose of the suite of documents is to:

The goals of this resource suite are to answer common questions such as:

The objectives of the "managing the transition" doc are to provide people who have been working towards WCAG 1.0 with the ability to:


There are very different audiences for this resource suite, which will be addressed in different sub-documents:


Probably the following documents (rough draft titles only!).

Benefits of WCAG 2.0 presentation

How to Transition Your Web Site from WCAG 1.0 to WCAG 2.0

Transitioning Web Accessibility Policies from WCAG 1.0 to 2.0

Slide set(s) for some or all of above


Mapping discussed EOWG 14 Dec 2008

Previous draft. (WCAG 2.0 comments: some issues, more comments)

<start new introduction>

This page shows how the WCAG 1.0 checkpoints relate to the WCAG 2.0 Last Call Working Draft published 11 December 2007. While WCAG 2.0 is still a draft it does not supersede WCAG 1.0. The WCAG 2 FAQ answers the question, "When should I start using WCAG 2.0?"

See the Overview of WCAG 2.0 Documents for information on "How WCAG 2.0 Drafts Differ from WCAG 1.0" and "Transitioning from WCAG 1.0 to WCAG 2.0".

WAI is working carefully to enable organizations and individuals who are currently using WCAG 1.0 to make a smooth transition to WCAG 2.0. Additional resources will be available in 2008 and announced on the WAI home page, WAI RSS feed, and public WAI IG email list.

</ end introduction>

Others changes on June 2007 draft:

WCAG WG folks: Does this address all the comments?

</ end Mapping discussion notes from EOWG 14 Dec 2008>

Open Issues





Removed "Baseline" section from "Transitioning Web Sites from WCAG 1.0 to WCAG 2.0"

  1. Understanding the Baseline concept
    To understand Baseline you will need to to be clear on the concept of technologies that are relied upon versus technologies used but not relied upon. For example ....
  2. Who sets the Baseline
    The Baseline can be set by a number of different entities including (but not limited to) authors, organizations, customers, and governmental bodies. Depending on what type of organisation you are may influence who sets the Baseline. For example Government Web sites may have a Baseline set by Government.
  3. Find appropriate Baseline
    An appropriate Baseline must be set taking into account a number of different factors. This will include your users, user agents capability (for example browsers, media players, plug-ins and assistive technologies), your type of organisation, Government guidelines, industry and so on.
  4. Understand how Baseline impacts your Conformance claim
    Your Conformance claim assumes that all Level Success Criteria, whether it be Single-A (A), Double-A (AA) or Triple A (AAA), are met assuming user agent support for only the technologies specified in the Baseline. For example...
  5. Dependant on Baseline and Conformance understand techniques that need to be implemented
    Once your Baseline and Conformance claim are clear it will be possible to map out what techniques must be applied to your Web site(s) in order to meet your chosen Level Success Criteria. Mapping out the technical changes necessary is explored in more detail below in section 3 "Analyze How the Differences in Requirements Apply to Your Site".

Removed "Conformance" section from "Transitioning Web Sites from WCAG 1.0 to WCAG 2.0"

Things you need to figure out include:

  1. WCAG 2.0 Conformance scheme
    The Conformance scheme has changed in WCAG 2.0. Under WCAG 1.0 there are guidelines that have checkpoints, which are Priority 1, 2 or 3. The basis for determining conformance to WCAG 1.0 are the checkpoints. Under WCAG 2.0 there are four design principles of Web accessibility. Each principle has guidelines, and each guideline has Success Criteria at level 1, 2, or 3. The basis for determining conformance to the WCAG 2.0 Working Draft are the Success Criteria.
  2. WCAG 2.0 Scoping
    Decide if your Conformance claim applies to all of your Web site or applies to only part of your Web site and on what basis. For example...
  3. Look at legal guidelines for your country or region
    If WCAG 1.0 Priority 1 and 2 (AA) has previously been recommended by Government, perhaps they will adopt WCAG 2.0 Level 1 and Level 2.

Note that you might refine your conformance goals after you have completed a more in-depth analysis of the technical differences, as describe below in section 3.


23 January 2006

Various edits October 2006-January 2007.

23 October 2006

23 October 2006

20 October 2006

2 October 2006

11 August 2006

14 August 2006