Abbreviation without expansion Accessibility Checkpoint


Specify the expansion of each abbreviation or acronym in a document where it first occurs.


Add a title attribute to abbr elements containing the full expansion of the term. Also add a full expansion in plain text at the point the term is first used on a page.

Applicable standards

  • WCAG 2.0 (Success Criteria: 3.1.4 level AAA)
  • WCAG 2.1 (Success Criteria: 3.1.4 level AAA)
  • WCAG 2.2 (Success Criteria: 3.1.4 level AAA)

Change history

  • 6.51 Dec 2023 Removed due to lack of screen reader support for abbr title.
  • 5.37 May 2020 Fixed false positive. Changed rule ID from AccWcag1-4.2.1 to AccHtmlAbbrNoExpansion.
  • 5.9 Jun 2015 No longer triggers for ACRONYM, due to lack of screen reader support.
  • 3.0 Dec 2008 Now triggers WCAG2 issue.
  • 1.0 Feb 2007 Added.

This page describes a web site issue detected in HTML documents by SortSite Desktop and OnDemand Suite.

Rule ID: AccHtmlAbbrNoExpansion