WCAG Explained: A Simplified Guide to Web Content Accessibility Guidelines

Looking for WCAG explained in a way that’s easy to understand?

We know that trying to read and apply the WCAG is like navigating a foreign city without a map. You need clear instructions and help to navigate challenges.

In this edition of Accessiblü Insights, we break down WCAG in an easy-to-understand way for web designers, developers, and anyone interested in digital accessibility.

Introduction to WCAG and web accessibility

Web Content Accessibility Guidelines (WCAG) is a set of standards developed by the World Wide Web Consortium (W3C) to ensure that websites and web applications are accessible to a wide range of users, including those with disabilities.

However, understanding and applying these guidelines can often be challenging for web designers, developers, and content creators.

• First, because the WCAG is not an easy read.
• Second, because it addresses a lot of different topics and separates them into levels.
• And third, because there are often multiple ways a criterion can be met.

Sounds like a recipe for confusion, right?

Why WCAG is difficult to understand and apply

WCAG is known for its technical jargon and complex terminology, which can make it intimidating for those who are not familiar with web development or accessibility.

Additionally, the guidelines can be lengthy and detailed, making it overwhelming to decipher which requirements apply to specific situations. Moreover, the rapid advancements in technology and the emergence of new devices and platforms further complicate the implementation of WCAG.

Principles vs. Rules

One of the most frustrating things about the WCAG is that they are based on principles and are not clear-cut rules. Being based on four principles is certainly a different approach for most.

However, these four principles provide flexibility and ways for web designers and developers to achieve accessibility. This means most criteria lack clearly defined rules that say do this and not that.

Technical Implementation Woes

One more thing that can be frustrating is figuring out the technical implementation of solutions. Websites are built using HTML code, Cascading Style Sheets (CSS), and JavaScript (JS). This means that web developers often have multiple solutions to a problem.

This is why understanding how assistive technology functions may be necessary to determine whether a solution is effective. Designers and developers may want to learn how to use some tools to check accessibility, just like they do other technical areas.

Reviewing the WCAG standards – WCAG 2.0, WCAG 2.1, and the new WCAG 2.2

WCAG has evolved over time, with the current version being WCAG 2.2. However, it is essential to have a basic understanding of the previous versions, including WCAG 2.0 and WCAG 2.1, to grasp the overall concept of web accessibility.

WCAG 1.0 was first released in 1999, and WCAG 2.0 was first published in early 2001. WCAG 2.0 was officially recommended by the W3C in 2008 and was internationally adopted. Many countries still recognize WCAG 2.0 as their standard for web accessibility. In the U.S., our Section 508 standards are based on WCAG 2.0.

WCAG 2.0 introduced the four key principles of accessibility: Perceivable, Operable, Understandable, and Robust (POUR). These principles were expanded with WCAG 2.1 by adding new success criteria to address mobile accessibility, low vision, and cognitive disabilities.

The most recent update (October 2023) is WCAG 2.2. This includes new success criteria to improve the accessibility of mobile devices, content reflow, and people with cognitive and learning disabilities.

One criterion, 4.1.1 Parsing, was removed for version 2.2 because web browsers are no longer affected by coding errors like they were years ago.

Why accessibility benefits everyone and not just users with disabilities

Contrary to popular belief, web accessibility is not solely for users with disabilities. In fact, accessible design benefits all users, including those without disabilities.

For example, captions and transcripts provided for videos not only assist individuals with hearing impairments but also allow users in noisy environments or those who prefer to watch videos without sound to understand the content.

Text alternatives for images benefit users with visual impairments, those with slow internet connections, and search engines that rely on text to index web pages.

By making websites and applications accessible, we create inclusive digital experiences that cater to a diverse range of users.

The legal implications of WCAG compliance – ADA and other regulations

WCAG compliance is not only a best practice but also a legal requirement in many countries. In the United States, the Department of Justice (DOJ) has stated that the best way to comply with The Americans with Disabilities Act (ADA) is to follow WCAG 2.1 AA guidelines.

While the ADA itself does not stipulate exactly which standards to follow, many jurisdictions have interpreted the ADA to apply to public websites and mobile applications.

Failure to comply with WCAG guidelines can result in legal repercussions, including lawsuits and financial penalties. Businesses and organizations should understand their legal obligations and ensure that their digital properties meet the accessibility standards established by WCAG.

WCAG itself is not a law to comply with. Rather, they are standards to which some accessibility laws require conformance.

Key principles of WCAG – Perceivable, Operable, Understandable, and Robust

WCAG is built upon four key principles: Perceivable, Operable, Understandable, and Robust (POUR). These principles serve as the foundation for creating accessible web content.

Perceivable:

This principle focuses on making information and user interface components easy to perceive. This means offering multiple ways to present information so users can access it through different senses. For example, providing alternative text for images ensures that users with visual impairments understand the content.

Operable:

Users should be able to interact with and navigate the interface. This means using more than just a mouse or touch point to do everything. Keyboard navigation, captions for videos, and ensuring that interactive elements are easily accessible are examples of operable design.

Understandable:

Information and operation of the user interface should be clear and straightforward. Simplifying language, organizing content logically, and providing input assistance contribute to the understandability of digital content. Examples include tooltips, form labels, and placeholder text.

Robust:

Content should be compatible with current and future technologies. Ensuring compatibility with various assistive technologies and staying updated on coding standards contribute to robust design. For example, a web page menu should not cover up text when rotating a device and a page should not have zooming disabled.

WCAG Levels explained: A, AA, and AAA

There are three levels of compliance when it comes to WCAG 2.1 and the new WCAG 2.2. All three are acceptable levels of accessibility and each one builds upon the other. This means WCAG 2.1 Level AA includes all of level A as well as level AA.

Basic Accessibility, Level A: (Minimum Compliance):

• Goal: The primary goal of Level A is to address the most basic accessibility requirements, making content accessible to a broad range of users.
• Significance: Achieving Level A compliance means meeting the essential criteria that eliminate barriers for users with the most common disabilities.
• Examples of Level A Criteria:
  • Providing text alternatives for non-text content (e.g., images).
  • Ensuring that content is adaptable and can be presented in different ways.
  • Making text content readable and understandable.

Standard Accessibility, Level AA: (Intermediate Compliance):

• Goal: Level AA builds on Level A and addresses more advanced criteria, enhancing accessibility for a wider range of users, including those with diverse disabilities.
• Significance: This level is often considered the standard for accessibility compliance and is widely adopted as a baseline for creating inclusive digital content.
• Examples of Level AA Criteria:
  • Providing captions for pre-recorded audio content.
  • Ensuring keyboard accessibility for all functionalities.
  • Offering sufficient color contrast for text and images.

Enhanced Accessibility, Level AAA: (Advanced Compliance):

• Goal: Level AAA represents the highest level of accessibility compliance, addressing a comprehensive set of criteria to make content accessible to users with various disabilities, including those with more specific needs.
• Significance: Achieving Level AAA compliance demonstrates a commitment to providing the most inclusive and accessible digital experience.
• Examples of Level AAA Criteria:
  • Providing sign language interpretation for pre-recorded audio content.
  • Ensuring content is robust enough to be reliably interpreted by a wide variety of user agents, including assistive technologies.
  • Offering content in multiple ways (e.g., a sign language video in addition to text).

Key Takeaways for WCAG Levels

• Level AA is the most recommended standard for WCAG conformance.
• Level AAA criteria may not be applicable to most websites and apps. If you don’t have elements that level AAA can measure, there’s no need to try for it.
• It’s better to meet all Level AA with a few extra AAA than to shoot for all of AAA only to come up short on most. There is a difference!

Success Criteria explained

Success criteria are the individual guidelines themselves. WCAG has a total of 86 criterion that are each assigned to one of the three levels.

• 25 Level A criteria
• 38 Level AA criteria
• 23 Level AAA criteria

According to the W3C, “WCAG 2.2 success criteria are written as testable statements that are not technology-specific.” (Insert your favorite the-struggle-is-real meme here!)

Don’t worry; the W3C has provided some supporting documents that can help you understand how to test and meet each criterion:

1. How to Meet WCAG 2.2 – A customizable quick reference to WCAG 2.2 that includes all of the guidelines, success criteria, and techniques for authors to use as they are developing and evaluating Web content. This includes content from WCAG 2.0, 2.1 2.2 and can be filtered in many ways to help authors focus on relevant content.
2. Understanding WCAG 2.2 – A guide to understanding and implementing WCAG 2.2. There is a short “Understanding” document for each guideline and success criterion in WCAG 2.2 as well as key topics.
3. Techniques for WCAG 2.2 – A collection of techniques and common failures, each in a separate document that includes a description, examples, code and tests.

WCAG 2.1 AA: A closer look at the accessibility guidelines

WCAG 2.1, Level AA is a specific level of conformance within the WCAG 2.1 guidelines. Level AA is considered the standard for accessibility compliance and is widely adopted by organizations worldwide.

It includes a set of success criteria that address common accessibility issues, such as providing text alternatives for non-text content, ensuring keyboard accessibility, and offering resizable text.

By adhering to WCAG 2.1 (or 2.2), Level AA, web designers, and developers can significantly improve the accessibility of their websites and applications.

WCAG 2.2: What’s new and enhanced in the latest update

WCAG 2.2 is the most recent update to the WCAG standards, released in October 2023. It builds upon the existing guidelines and introduces new success criteria to address emerging technologies and accessibility challenges.

WCAG 2.2 includes enhancements related to mobile accessibility, content reflow, people with cognitive and learning disabilities, and users with low vision.

By staying up to date with the latest version of WCAG, web professionals can ensure that their designs and developments meet the evolving needs of users with disabilities.

Implementing WCAG guidelines in web design – Best practices and tips

The implementation of WCAG guidelines requires a holistic approach that encompasses both design and development processes. Here are some best practices and tips to help you incorporate accessibility into your web design workflow:

1. Start with a solid foundation: Use semantic HTML, proper heading structure, and descriptive link text to provide a clear and meaningful document structure.
2. Provide alternative text for images: Use concise and descriptive alt attributes to convey the purpose and context of images to users who cannot see them.
3. Ensure keyboard accessibility: Test your website’s functionality using only the keyboard to ensure that all interactive elements can be accessed and operated without a mouse.
4. Use color with caution: Avoid using color as the sole means of conveying information. Provide additional visual cues or text alternatives to ensure that content is understandable to all users.
5. Test your website on different devices: Ensure that your website is responsive and works well on various devices, including desktops, tablets, and mobile phones. Pay special attention to touch targets and navigation on smaller screens.
6. Provide clear instructions and error messages: Use plain language and provide informative error messages to guide users through form submissions and other interactive processes.
7. Prioritize user testing: Automated accessibility testing tools can be helpful but not foolproof. Conduct manual testing and involve users with disabilities to gain valuable insights into the accessibility of your website.

Tools and resources for testing and evaluating WCAG compliance

Testing and evaluating the accessibility of a website or application is an integral part of the WCAG compliance process. Fortunately, numerous tools and resources are available to assist you. Here are some popular options:

• Web Accessibility Evaluation Tools: These tools analyze web pages for potential accessibility issues and provide detailed reports on areas that require improvement. Examples include Axe, Wave, and Lighthouse.
• Screen Readers: Screen readers simulate the experience of users with visual impairments by reading out the content of web pages. Popular screen readers include NVDA, VoiceOver, and JAWS.
• Color Contrast Checkers: These tools help ensure that the contrast between text and background colors meets WCAG’s minimum requirements. Tools like Contrast Checker and Color Safe are widely used for this purpose.
• Assistive Technologies: Using assistive technologies, such as screen magnifiers, speech recognition software, and alternative input devices, can provide valuable insights into the accessibility of your website.
• WCAG Documentation and Resources: The W3C WCAG website provides comprehensive documentation, techniques, and best practices for understanding and implementing WCAG. It is a valuable resource for web professionals seeking to achieve accessibility compliance.

The limitations of automated testing tools and why manual testing is critical

While automated testing tools offer a convenient way to identify potential accessibility issues, they have limitations. Automated tools can only detect certain accessibility barriers and often fail to capture the full user experience.

On the other hand, manual testing involves human evaluation and provides a more comprehensive assessment of accessibility.

Manual testing allows testers to consider contextual factors and identify issues that automated tools may overlook. To ensure a truly accessible website, it is crucial to combine automated testing with manual testing and involve users with disabilities in the evaluation process.

The role of web developers in achieving WCAG compliance

Web developers play a critical role in achieving WCAG compliance. They are responsible for implementing the necessary code, markup, and functionality to ensure that web content is accessible to all users.

Web developers should be familiar with WCAG guidelines, current accessibility standards, and best practices. They should also collaborate closely with designers, content creators, and accessibility experts to address accessibility concerns throughout the development process.

By incorporating accessibility into their coding practices and staying informed about the latest accessibility techniques, web developers can contribute to creating a more inclusive web for all.

Common challenges and misconceptions about WCAG

Despite the growing awareness of web accessibility, there are common challenges and misconceptions that hinder the successful implementation of WCAG guidelines. Some of these include:

• Perception of complexity: Many perceive WCAG guidelines as overly complex and technical. However, with the right resources and guidance, achieving accessibility compliance can be an attainable goal.
• Lack of awareness: Some web professionals are still unaware of the importance and legal requirements of web accessibility. Raising awareness and providing education on WCAG can help overcome this challenge.
• Resistance to change: Implementing accessibility measures may require changes to established design and development processes. Resistance to change can pose a significant obstacle to achieving accessibility compliance.
• Limited resources: Smaller organizations or individual web professionals may face limitations in terms of time, budget, or expertise to fully address accessibility concerns. Seeking external assistance or leveraging available resources can help overcome these limitations.

WCAG accessibility audits and consulting services

For organizations that require a comprehensive evaluation of their web properties’ accessibility, WCAG accessibility audits and consulting services can provide valuable insights and guidance.

Accessibility audits typically involve a thorough review of the website or application, including both automated and manual testing, to identify accessibility barriers. The audit report provides recommendations for remediation and a roadmap for achieving compliance.

Consulting services offer ongoing support and guidance for implementing accessibility best practices and ensuring long-term compliance. Engaging with accessibility experts can save time and effort while ensuring that your digital properties meet WCAG standards.

Conclusion: Embracing web accessibility for a better user experience

Web accessibility is not a mere checkbox to tick; it is a fundamental aspect of inclusive design and digital equality. By embracing WCAG and implementing its guidelines, web professionals can create websites and applications that are accessible to all users, regardless of their abilities.

Accessibility benefits not only individuals with disabilities but also improves the user experience for everyone. Moreover, compliance with WCAG is not only a moral imperative but also a legal requirement in many jurisdictions.

By understanding the principles of WCAG, staying updated with the latest guidelines, and involving users with disabilities in the testing process, we can build a web that is truly inclusive and accessible to all. Let us strive towards a digital landscape that empowers and includes everyone.

Let Accessiblü help.

To learn more about WCAG and ensure the accessibility of your website, contact our team of experts today. Together, let’s create a web that leaves no user behind.