F38: Failure of Success Criterion 1.1.1 due to not marking up decorative images in HTML in a way that allows Assistive technology to ignore them

Status

Added to XML by AWK 12/16/2013
Original version of F38
Note change in title of failure
Surveyed by TF More ARIA techniques for 02 May 2013

Applicability

HTML and XHTML

This failure relates to:

Success Criterion 1.1.1 (Non-text Content)
- How to Meet 1.1.1 (Non-text Content)
- Understanding Success Criterion 1.1.1 (Non-text Content)

Description

This describes a failure condition for text alternatives for images that should be ignored by assistive technology (AT). If an image has the attribute role=presentation, it will be ignored by AT. However, if it does not have role=presentation, and if there is no alt attribute at all assistive technologies are not able to ignore the image. For decorative images which need to be ignored by AT, either role=presentation must be used or the alt attribute must be provided and have a null value (i.e., alt="") to avoid a failure of this Success Criterion."

Examples

Failure Example 1: Decorative images that have no alt attribute and no role attribute

Resources

No resources available for this technique.

Related Techniques

(none currently listed)

Tests

Procedure

For any img element that is used for purely decorative content:

Check whether the element has no role attribute or has a role attribute that is not presentation
Check whether the element has no alt attribute or has an alt attribute that is not null

Expected Results

If step #1 is true and if step #2 is true, this failure condition applies and content fails the Success Criterion.