The “Missing Abbreviation Extension Check” evaluates whether all abbreviations, acronyms, or initialisms used in the content include their expanded or full form upon first use.
Example outcome
I found 1 abbreviation in which the expansion was forgotten.
Impact
Visual Impairments: Users with visual impairments using a screen reader, will just hear the abbreviation as-is (e.g., “HTML” as “H-T-M-L”) without clarification of the meaning.
Motor Impairments: People with motor impairments might not recall what a previously stated abbreviation means.
Cognitive Disabilities: A person with cognitive disabilities may struggle to interpret abbreviations, especially in academic or technical contexts.
Fixes
To address missing abbreviation expansion:
Identify the abbreviation that is missing an expansion.
Add the expansion using the <abbr> element with a title attribute (e.g., <abbr title="World Health Organization">WHO</abbr>).