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Documentation of accessibility observations for Deutsche Telekom – Mobilfunk & OneShop

1.1.1 Non-text Content (A) Image is missing alt attribute

Priority: Critical Low Page: Daten Tarife Observation Permalink
Accompanying Files
Observation Details

The HTML image element must always use have alt attribute present. Either

  • null alt attribute for purely decorative or

  • non-null alt attribute for informative/functional images.

Image elements missing alt attribute:

  • "Anmelden" button icon

Remediation Notes

Ensure, all HTML image elements properly set the alt attribute. Depending on the purpose of the image, choose whether to declare an image decorative, informative, or functional. For more guidance in choosing, refer to the W3C Alt-decision tree.

If the image is

  • purely decorative, set a null alt attribute as follows: <img alt="" />

  • not purely decorative, the alt attribute must not be null