Barrier-free web design is nothing extravagant. Accessibility means aligning programming with certain Web standards. Barrier-free web design also opens up an important target group.

Accessible Internet (Web Accessibility) refers to Internet offerings that can be used by all users uneingeschränkt regardless of physical or technical disabilities (technical= text browser, PDA or ä. / physical= age-related restrictions such as visual impairments).

One of the basic requirements for accessibility is strict compliance with web standards such as valid HTML and XHTML. The separation of content (text, images, etc.) and layout is one of the important criteria. This can be achieved, for example, through the correct use of Cascading Style Sheets (CSS).

In different browsers, fixed font sizes represent a barrier. It is difficult for the user (surfer) to change them. It is therefore important during programming to provide fonts, ranges, distances, etc. with relative values in em or %.

Again and again one sees chic navigations, which were realized with JavaScript or with Plug-ins (Flash). The source code of the web page is inflated unnecessarily extensively. This locks out users whose browser does not have JavaScript unterstützt or who have disabled this function in the browser or who do not have the required plug-ins installed on their computer.

Internet search engines like Google search the WWW with automated programs (web crawlers or robots). They read a website ähnlich like visually impaired users. You can usually only recognize text. Pictures and animations are usually not seen by them. The result is websites that are not completely or incorrectly recorded by the search engines, which in turn wastes important customer potential.


Compliance with important standards and norms is becoming increasingly important for the accessibility and compatibility of a website:

The quality of an Internet presence will have to measure itself more and more by whether it was created technically solid and correct (professional and standard-compliant).

The conformity jump of W3C standards and the validation of HTML, XHTML or XML code as well as the integrated CSS is of elementary importance.

Validated websites with leaner HTML code also save Internet and storage costs. This is also becoming increasingly important for transmission to mobile devices. In addition, search engine placement is also improved.