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author:php.cn  update time:2022-04-01 15:28:35

Web Accessibility (WAI)



Only a website that can be used by people with disabilities can be called an easy-to-use (easy-to-access) website.

Disabled people refer to users with disabilities or poor health.


Web Accessibility Initiative - WAI

WAI (sponsored by W3C in 1997) is a set of guidelines for web developers, creators, and designers to use - on how Make content more accessible to people with disabilities.

The goal of these guidelines is accessibility, but also to help make web content available to more browsers (voice browsers, mobile phones, handheld devices) and to work on more Users in difficult environments (non-handheld, bright light, darkness, low vision, noise, etc.).


Is WAI important for your website?

Yes.

Millions of people with disabilities surf the Internet every day, and millions more are using poor browser equipment or working in difficult environments.

If your website lacks things like adjustable font sizes, graphics with textual descriptions, and easy navigation, those people won't be able to access your information.

The fact is: your website disempowers these people.

There are other reasons to enhance the usability of the website:

  • can improve the reputation and image of the website

  • can be improved Customer satisfaction

  • can increase the number of visitors

  • can increase the time visitors stay on the site

  • Can increase the number of return visits from visitors

  • Can also increase usability for people without disabilities

  • Can turn off graphics features Increases usability for people using older devices : Elderly

  • #Use adjustable font sizes
  • Please use relative font sizes so users can use the browser menu to change the default font size.

    Can you read?
Can you read?

Can you read?

Can you read?

You can change the font size by selecting "View - Text Size" in your browser menu.

Using the "alt" attribute

The alt attribute allows you to provide a corresponding text for an image (and for other elements).

Example:lamp.gif


<img src="../style/images/banana.jpg" alt="Banana">

Sometimes the browser cannot display the image. The specific reasons are:

  • The user has turned off image display

  • The browser is a mini browser that does not support graphic display

  • The browser is a voice browser (for blind and partially sighted people)

If you use the alt attribute, then the browser can at least display or read out the relevant information Description of the image.

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