Guides

Implementation Patterns

The following implementation patterns have been found to work well in practice. They are not, however, the only way in which these functionalities can be built, as WCAG-compliant web service design and implementation can follow a multitude of approaches, none necessarily more correct than the other.

All linked files are PDF documents and will open in a new tab.

Tablist pattern	Tablist Pattern.pdf
Linkbox pattern	Linkbox Pattern.pdf
Navigation menus	Navigation Menus.pdf
Modal accessibility	Modal Pattern.pdf
Slider/Carousel pattern	Slider-Carousel Pattern.pdf
Single Page Applications	Single Page Applications.pdf

Other materials

Developers' FAQ	FAQ.txt
Keyboard testing bookmarklet	Code and instructions Zip file

Helsinki Accessibility Model

The model is being developed by the City of Helsinki. Currently, most of the content is available only in Finnish.

Helsinki Accessibility Model (external web site)