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What is digital accessibility?
Digital accessibility means designing and maintaining websites, apps and digital services so people with different abilities, technologies and circumstances can use them.
Accessibility is not a special mode for one type of person. People may read visually or through speech, navigate with touch or a keyboard, use voice commands or switch controls, need more time, or find complex instructions difficult to follow. A design can work well for one interaction method and fail for another.
Start with what someone is trying to do
Consider booking an appointment. A person needs to find the booking option, understand the instructions, choose a time, enter details, correct mistakes and recognise whether the booking succeeded. Barriers can occur at any step, even when every control looks polished.
Four ideas worth understanding
- Accessibility
- Removing avoidable barriers to accessing and using digital information and functionality.
- Inclusive design
- Considering different people, situations and interaction methods throughout the design process rather than treating one experience as normal.
- Assistive technology
- Tools and features such as screen readers, switch access, magnification and voice control that people may use to interact with technology. Not everyone with a disability uses assistive technology.
- Usability
- Whether someone can accomplish a task effectively and with reasonable effort. Passing a technical check does not guarantee a good experience.
What do accessibility standards do?
Web Content Accessibility Guidelines (WCAG) provide testable criteria for many web accessibility requirements. They are important, but they do not cover every practical difficulty or replace evaluation with people who use different technologies and approaches.
How can you begin?
- Choose a real task that matters to visitors.
- Try completing it with a keyboard, enlarged text or another relevant interaction method.
- Notice where information is missing, actions are difficult or extra effort is required.
- Record what actually happened, the environment and what you have not tested.
- Make a change and check the original task again.
You can explore common barriers, try a controlled example, or follow a practical improvement guide. These are starting points, not substitutes for involving disabled people in evaluating real products.