Support different ways to use a product
Some people use a keyboard instead of a mouse, a screen reader to hear a page, or captions to follow a video. Useful features include clear language, image descriptions, readable contrast, and text that remains readable when enlarged. Well-structured HTML helps screen readers understand a page.
Accessibility also helps with temporary or situational limits, such as a broken arm or a noisy room.
Check the real experience
The Web Content Accessibility Guidelines (WCAG) offer testable checks, but passing them does not guarantee a product is easy to use. Testing with disabled people can reveal barriers a checklist misses. Teams should consider accessibility throughout design and development.