Website Accessibility and Inclusive Design Practices

Author: Disabled World (DW)
Updated/Revised Date: 22 Jul 2026

Table of Contents:
Synopsis - Definition - About This Section - FAQs - Publications - Subtopics

Synopsis

At a Glance

• 1 - WCAG 2.0 became an official recommendation on December 11, 2008, and is now widely adopted by governments as the accessibility standard.
• 2 - Census Bureau data from July 25, 2012 found that 56.7 million Americans, or 18.7 percent of the population, live with some type of disability.
• 3 - Assistive technologies such as braille terminals, screen magnifiers, and speech recognition software allow people with differing disabilities to browse and interact with the web.

Topic Definition

Web Accessibility

Web accessibility is the practice of designing and building websites, applications and digital content so that people with disabilities, including those who are blind, deaf, or have limited mobility or cognitive differences, can perceive, navigate and interact with them using tools such as screen readers, keyboard-only navigation and captioning.

About This Section

How Assistive Technology Shapes Modern Web Design

Web accessibility refers to the inclusive practice of removing barriers that prevent access to websites by people with disabilities. When sites are correctly designed, developed and edited, all users have equal access to information and functionality. On 11 December 2008, the WAI released the WCAG 2.0 as a Recommendation. WCAG 2.0 aims to be up-to-date and more technology neutral. Though web designers can choose either standard to follow, the WCAG 2.0 have been widely accepted as the definitive guidelines on how to create accessible websites. Governments are steadily adopting the WCAG 2.0 as the accessibility standard for their websites.

Web accessibility also benefits people without disabilities. For example, a key principle of Web accessibility is designing Websites and software that are flexible to meet different user needs, preferences, and situations. This flexibility also benefits people without disabilities in certain situations, such as people using a slow Internet connection, people with "temporary disabilities" such as a broken arm, and people with changing abilities due to aging. The document "Developing a Web Accessibility Business Case for Your Organization" describes many benefits of Web accessibility, including benefits for organizations.

Government departments in most countries are required by law to provide accessible websites and in the UK it is law that websites must be accessible to the disabled, including the blind. But how can a blind person view a website, I hear you ask.

Well, they can't "see" the page in the sense a sighted person can, so they use a tool called a screen reader. You can find more information on screen readers here, but basically a screen reader is a software application on your computer that attempts to identify and interpret what is being displayed on the computer screen, in this case a web page. This interpretation is then represented to the user with text-to-speech, sound icons, or a braille output device.

Currently, most Websites and Web software have accessibility barriers that make it difficult or impossible for many people with disabilities to use the Web. As more accessible Websites and software become available, people with disabilities can use and contribute to the Web more effectively.

Assistive Technologies Used for Web Browsing

Individuals living with a disability use assistive technologies such as the following to enable and assist web browsing:

• Access to subtitled or sign language videos on the Internet for all deaf people.
• Keyboard overlays, which can make typing easier and more accurate for those who have motor control difficulties.
• Screen magnification software, which enlarges what is displayed on the computer monitor, making it easier to read for vision impaired users.
• Speech-recognition software that can accept spoken commands to the computer, or turn dictation into grammatically correct text - useful for those who have difficulty using a mouse or a keyboard.
• Braille terminals, consisting of a Refreshable Braille display which renders text as Braille characters (usually by raising pegs through holes in a flat surface) and either a mainstream keyboard or a Braille keyboard.
• Screen reader software, which can read out, using synthesized speech, either selected elements of what is being displayed on the monitor (helpful for users with reading or learning difficulties), or which can read out everything that is happening on the computer (used by blind and vision impaired users).

Much of the focus on Web accessibility has been on the responsibilities of Web developers. However, Web software also has a vital role in Web accessibility. Software needs to help developers produce and evaluate accessible Websites, and be usable by people with disabilities.

When sites are correctly designed, developed and edited, all users can have equal access to information and functionality. For example, when a site is coded with semantically meaningful HTML, with textual equivalents provided for images and with links named meaningfully, this helps blind users using text-to-speech software or text-to-Braille hardware.

• When text and images are large or enlargeable, it is easier for users with poor sight to read and understand the content.
• When flashing effects are avoided or made optional, users prone to seizures caused by these effects are not put at risk.
• When content is written in plain language and illustrated with instructional diagrams and animations, users with dyslexia and learning difficulties are better able to understand the content.
• When clickable links and areas are large, this helps users who cannot control a mouse with precision.
• When pages are coded so that users can navigate utilizing the keyboard alone, or a single switch access device alone, this helps users who cannot use a mouse or even a standard keyboard.
• When sites are correctly built and maintained, all of these users can be accommodated while not impacting on the usability of the site for non-disabled users.
• When links are underlined (or otherwise differentiated) as well as colored, this ensures that color-blind users will be able to notice them.
• When videos are closed captioned or a sign language version is available, deaf, and hard of hearing users can understand the video.

According to figures released by the Census Bureau on July 25, 2012, 56.7 million Americans (18.7% of the U.S. population) have some type of disability and out of this number, an estimated 38.3 million (12.6%) have a severe disability. Consider impairments that impact accessibility of online websites, applications, and documents. This survey estimates the number of people with specific impairments as follows:

• 15.2 million (6.3%) have a cognitive, mental, or emotional impairment.
• 19.9 million (8.2%) have difficulty lifting or grasping. This could, for example, impact their use of a mouse or keyboard.
• 7.6 million (3.1%) have a hearing impairment. They might rely on transcripts and captions for audio and video media.
• 8.1 million (3.3%) have a vision impairment. These people might rely on a screen magnifier or a screen reader, or might have a form of color blindness.

World Facts and Statistics on Disabilities and Disability Issues

Summary

Web accessibility means that people with disabilities can use the Web. More specifically, Web accessibility means that people with disabilities can perceive, understand, navigate, and interact with the Web, and that they can contribute to the Web. Web accessibility also benefits others, including older people with changing abilities due to aging.

Frequently Asked Questions

How can I test whether my website is accessible?

You can begin with automated checkers that scan pages for common issues like missing image descriptions or poor color contrast, though these tools catch only part of the picture. Manual testing is also important, such as navigating with a keyboard alone, trying a screen reader, and checking that content makes sense without color or sound. Involving people with disabilities in testing gives the most reliable insight into real usability.

What are the main WCAG principles?

The guidelines are organized around four principles often summarized as perceivable, operable, understandable, and robust. In practice this means content can be sensed in more than one way, controls work with different input methods, information is clear and predictable, and code works reliably with assistive technology. These principles give designers a structured way to think about accessibility rather than a checklist alone.

What are WCAG conformance levels A, AA, and AAA?

The guidelines define three levels of conformance, with A being the most basic, AA covering a broader and more widely expected set of requirements, and AAA representing the highest and most demanding level. Many organizations and laws aim for the AA level as a practical standard for most websites. The right target depends on your audience, resources, and any legal obligations that apply to you.

Does making a website accessible hurt its design or performance?

No, accessibility and good design generally support each other, and accessible sites often load faster and rank better in search because of cleaner, well-structured code. Techniques like clear layouts, readable text, and meaningful labels improve the experience for everyone, not just users with disabilities. With thoughtful planning, an accessible site can be just as attractive and engaging as any other.

How much does it cost to make a website accessible?

Building accessibility in from the start is usually far cheaper than retrofitting an existing site, since fixing problems later can require significant redesign. Costs depend on the size and complexity of the site and whether you handle the work in-house or hire specialists. Treating accessibility as part of the normal design process, rather than an add-on, keeps expenses manageable.

Are mobile apps covered by web accessibility guidelines?

Yes, the same underlying principles apply to mobile apps, and there is specific guidance for adapting accessibility standards to touchscreens and smaller devices. Considerations include support for screen readers built into mobile operating systems, adequate touch target sizes, and content that adjusts to different orientations and text sizes. Designing mobile experiences with these needs in mind ensures they work for everyone.

Who is legally responsible for website accessibility?

Responsibility usually rests with the organization that owns or operates the website, and in many countries public bodies and businesses are legally required to provide accessible digital services. The specific obligations and enforcement vary by jurisdiction. Because laws differ and continue to evolve, organizations should check the requirements that apply to them and treat accessibility as an ongoing commitment.

Curated and edited by Ian C. Langtree, Founder & Editor-in-Chief, Disabled World. This section is maintained by the Disabled World editorial team.

Last updated: 22 Jul 2026