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Web Quality - Accessibility (WAI)

Accessibility (Accessibility) refers to the pursuit of the website to allow users to easily obtain and use their information without being restricted by reasons such as disabilities, software and hardware differences, etc.

The Importance of Web Accessibility

Web accessibility is important for the development of society and the dignity of individuals. Studies have shown that 17% of the population has at least one disability, including visual, auditory and physical disabilities, and they have the same rights to access and use the Internet and other software and hardware as everyone else.

Apart from this, an accessible website has other important meanings. For example:

Improve search engine rankings;
Enhance user experience by improving language, color, font selection, etc.;
Compatible with all mobile devices and browsers.

Principles of Web Accessibility

The principles of the WAI are the basis for the guidelines, providing ground rules for making web content more accessible to users with various disabilities. The following are the principles of WAI:

1. Sensible

This means that users can recognize the content and information on the interface.

avoid using information represented by color only, compared to colorblind people;
Add alt text to all images via HTML markup;
Add textual captions or subtitles to multimedia.

2. Understandable

This means that users can understand the content and information on the interface.

keep the text well organized and avoid vague and difficult terminology;
Label tables so they can be read correctly by screen readers;
Make text, numbers, and symbols larger in size and proportion.

3. Operable

This means that users can interact and use content and interface functionality.

Provide clear operation guides for all functions for easy use;
Allow users to control volume and video playback speed;
Make sure that you can easily operate and understand the way of navigation by keyboard or mouse.

4. Sustainability

This means users can continue to use content and interface functionality.

Avoid any bright lights and strong animations that may cause epilepsy or other disorders.
Make sure that pages do not load too slowly so that all users can access the site quickly;
When using plugins or scripts, provide alternate functionality so users can access the same information without plugins or scripts.

Technical Guide to Web Accessibility

WAI provides a set of guidelines to help developers develop technical specifications for web accessibility.

The following are technical guidelines in WAI:

Provides a text copy of video and audio content without sound.
Markup the form so that screen readers can read the form tags.
Heading and text tags using regular structured HTML.
Define interactive controls using WAI-ARIA roles, states and properties.
Resize elements on the page to at least 200%.
Use a high-contrast color scheme so it's easier to distinguish between text and background colors.

in conclusion

By enforcing accessibility standards, we can provide a better experience for users and make content accessible to more people. Web Accessibility helps increase the usage of existing websites and attract new user groups.

Happy Web Quality - Accessibility (WAI)