Accessibility on the internet
In short: Internet accessibility means designing websites and digital content so people with disabilities can use them fully. This includes, among others, visually impaired, deaf, and motor-impaired users.
In more detail: International guidelines like the Web Content Accessibility Guidelines define concrete standards for accessible digital content.
In detail
- Alt text for images: Descriptive text for images allows screen readers to read out the image content to blind users.
- Keyboard operability: Websites should be fully usable without a mouse, so people with motor impairments can operate them via keyboard.
- Colour contrast: Sufficient contrast between text and background is crucial for visually impaired users and people with colour blindness.
- Subtitles and transcripts: Videos and audio content should have subtitles or text versions to make them accessible to deaf users.
- Logical structure: A clear heading hierarchy and semantic HTML significantly ease navigation for users of assistive technology.
- Understandable language: Simple, clear wording benefits not only people with cognitive impairments but improves usability for everyone.
- Legal requirements: In many countries, public bodies and increasingly also private companies are legally required to make their digital offerings accessible (gebaerdensprache-grundlagen, farbenlehre-grundlagen).