The AccessibilityAccessibilityAccessibility (commonly shortened to a11y) refers to the design of products, devices, services, or environments for people with disabilities. The concept of accessible design ensures both “direct access” (i.e. unassisted) and “indirect access” meaning compatibility with a person’s assistive technology (for example, computer screen readers). (https://en.wikipedia.org/wiki/Accessibility) Team shares accessibility expertise across the project to improve the accessibility of WordPress coreCoreCore is the set of software required to run WordPress. The Core Development Team builds WordPress. and resources.
<img src="../../gallery/illustration.png" alt="description of the illustration">
Correct: will be interpreted as "description of the illustration, image" (example by Apple VoiceOver)
<img src="../../gallery/illustration.png" alt="">
Correct: will be interpreted as "image" (example by Apple VoiceOver)
<a href="blog.html"><img src="icon.png" alt="Blog Postings"></a>
Correct: will be interpreted as "link, image Blog Postings, image" (example by Apple VoiceOver)
<img src="../../gallery/illustration.png">
<img src="illustration.png">
False: will both be interpreted as "illustration.png, image" (example by Apple VoiceOver)
Image from WordPress Media Library where you can insert various meta-information for an image. An alternative text can be inserted in the Alt Text-field
On the Web Accessibility Tutorials of the W3C the alt Decision Tree tool is an almost comprehensive guide that describes how to use the alt attribute of an image in various situations.
Blind, people with visual and readability limitations will benefit when using a screen reader.
The alt attribute helps with Search Engine Optimization. Google uses alt text along with computer vision algorithms and the contents of the page to understand the subject matter of the image (source https://support.google.com/webmasters/answer/114016).