Id Attributes Check

Description

The “Id Attributes Check” evaluates whether all id attributes are unique.

Example outcome

I noticed that there are no id attributes repeated on this webpage.

Impact

• Visual Impairments: Screen readers may misidentify labels or headings.
• Motor Impairments: Broken skip links or modals may prevent keyboard users from navigating.
• Cognitive Disabilities: Mismatched or incorrect landmarks increase confusion.

Fixes

To address inappropriately repeated id attributes:

1. Locate the different elements with the same id.
2. Change them in order to ensure that each element has a unique id.

Resources

• WCAG 2.2: Understanding Success Criteria 4.1.1
• WCAG 2.1 Techniques: Technique H93: Ensuring that id attributes are unique on a web page