Perceivable - Perceiving the portal page

1. Perceivable

1. Perceivable

"Information and components of the user interface must be presented to users in such a way that they can perceive them." (WCAG)

The "Perceptible" principle is about users being able to perceive information and components on portal and application pages with at least one of their senses. For example, if a user is blind, they should be able to use screen readers to hear information instead of seeing it. This is mainly achieved by storing text alternatives for graphics or, if necessary, buttons, which are then read out by screen readers.

For users with impaired vision, it is critical that color contrasts, font sizes, line spacing, and character spacing be sufficiently large. For people with red-green deficiency, it is important to use colors that you can distinguish.

To describe perceivability better while distinguishing its different aspects, the following four guidelines are available:

  • Text Alternatives

    This is about providing text alternatives for non-textual elements such as images, graphics and, where appropriate, buttons.

  • Time-based Media

    The point "Time-based media" was only included here for the sake of completeness, as it is not relevant in connection with Intrexx. Intrexx does not provide original time-based media. If you use such media, you must ensure that you provide perceptible alternatives. These can include subtitles for videos, for example.

  • Adaptable

    Adaptability is about the clear structure of a portal or application page. The structure with the help of headings plays an important role here. It includes adaptability for different screen displays which is available automatically in Intrexx once you create responsive pages with the Page Wizard, for example.

  • Distinguishable

    The aim here is to make it as easy as possible for the user to distinguish content. This involves the use of sufficient contrast, for example.

The aspects described in the four guidelines are not always sharply delineated. Rather, they complement each other.

The four guidelines and their implementation in Intrexx are described in the following sections.