What is accessibility testing and what is checked?

Accessibility testing is the process of evaluating software for accessibility for users with disabilities (such as visual impairments, hearing impairments, motor disabilities).

What is checked:

• Compatibility with screen readers.
• Presence of alternative text for images.
• Proper header structure and HTML semantics.
• Color contrast for text and background.
• Keyboard navigation capability (without a mouse).
• Support for interface scaling without loss of functionality.
• Absence of elements causing epileptic seizures (flashing effects).

Example: checking that buttons can be activated via keyboard (using Tab and Enter), and images have an alt attribute with a description.

The goal is to make the product convenient and accessible for the widest possible audience, including people with disabilities, which is often regulated by law.