Why Web Accessibility Overlays Are Not Effective

and What Businesses Should Do Instead

February 3, 2025

Web accessibility overlays promise to make the web more accessible by adding features like text resizing, contrast changes, and reading-aloud options. While these tools may seem like a quick solution, they only address surface-level issues without fixing the underlying problems that users with disabilities face. Instead of tackling core accessibility problems, like HTML structure, missing ARIA labels, or broken navigation, overlays simply cover them up, producing an accessibility veneer.

Understanding the limitations of web accessibility overlays will help business owners decide on website accessibility. This knowledge empowers them to invest in designing truly accessible websites from their conception. It is time to wake up to the fact that only with a more thoughtful, inclusive approach will an accessible web experience be created for all and to take concrete steps in that direction.

What Are Web Accessibility Overlays?

Web accessibility overlays have been third-party solutions on the market since the early 2000s. According to the Overlay Fact Sheet, overlays claim to improve website accessibility by offering user-controlled accessibility features such as resizing, contrast, and text-to-speech options. They modify a website's look and feel by adding a widget or toolbar to the existing design.

While these overlays can give the impression that a website is more accessible, they often fail to address accessibility problems that need fixing. Rather than improving the website's underlying structure, such as HTML coding, navigation, or ARIA labeling, they focus on surface-level adjustments that may look good but don't make the site more usable for people with disabilities.

In many cases, overlays rely on automated processes that can't always meet the needs of individuals with different disabilities. They also limit the possibilities for customization and may lead to compatibility issues, mainly when used alongside assistive technologies like screen readers. So, while overlays might seem quick, they don't provide comprehensive web accessibility solutions.

How Overlays "Cover Up" Accessibility Problems

Web accessibility overlays might seem like an easy, quick solution to accessibility concerns, but they don't solve the underlying issues on a website. Think of them as a band-aid on a much larger problem. These tools mainly address minor, surface-level adjustments—like font size, color contrast, and text-to-speech options—but they don't repair the root causes of poor accessibility, such as improper HTML structure, missing ARIA attributes, or broken keyboard navigation.

Superficial Fixes

Overlays can make sites appear differently by changing text size or color, but they don't fix underlying structural code issues. They also won't repair poorly marked-up content, which makes it impossible for screen readers to understand what is on the page. Thus, users who rely on keyboard navigation or screen readers may still be unable to navigate, complete forms, or perform other tasks because the site's foundation hasn't been fixed.

Failing to Solve Real Problems

Overlays do nothing to address confusing navigation, missing image alt text, and incorrectly labeled form controls formative technologies. These items are the website's actual accessibility. Using the previous example, if your website is without proper ARIA roles or labels, then readers will be unable to decipher the content appropriately, and thus, it will be inaccessible to inlays that may change some visual appearance but do nothing for users relying on screen readers, alternative input devices, or other assistive technologies.

The False Sense of Accessibility

One of the most dangerous aspects of relying on overlays is the false sense of security they afford. Organizations believe they've solved all their accessibility problems because they've slapped an overlay when the core issues still exist. Overlays reinforce the superficial "accessibility veneer" without meaningfully improving the experience for users with disabilities by making surface changes without addressing any deeper structural issues. This can distract businesses from work that would create an inclusive web experience.

Issues with Web Accessibility Overlays According to the Community

The accessibility community has voiced growing concerns about web accessibility overlays, and for good reason. The superficial changes that overlays provide do not solve many of the issues people with disabilities face online. Some of these tools even exacerbate the problems they aim to address. Here's why overlays fall short and what their impact is on the users they intend to help.

Not Fully Accessible

The biggest problem with overlays is that they do not make websites more accessible for all users. While overlays grant text resizing high-contrast mode, enabling text to speech, they often do not provide more profound improvements that are in demand about accessibility. For example, overlays can't fix navigation issues for people with a cognitive disability or content readability that goes beyond color or font size changes. Websites still need to be designed in ways that consider all disabilities—visual, auditory, cognitive, and motor—but overlays don't account for this diversity in needs.

Screen Reader and Assistive Technology Compatibility

Overlays often conflict with accessibility technologies such as screen readers, which work perfectly if proper HTML markup and ARIA attributes are in place. These elements usually do not work correctly with screen readers, and when they do, they often have anomalies in functionality and accuracy. Making changes to the site through an overlay without considering how those changes will affect screen readers or other assistive devices further creates an inconsistent and frustrating user experience.

False Sense of Compliance

Some businesses believe adding an overlay is enough to make their website compliant with accessibility standards like WCAG (Web Content Accessibility Guidelines) or ADA (Americans with Disabilities Act) regulations. This is far from the case. While overlays might allow companies to check off a box and claim they're addressing accessibility, they don't truly address the core issues that make a website usable for everyone. In many cases, businesses using overlays fail to go through the comprehensive process of testing and fixing underlying code, exposing them to legal and reputational risks.

Lack of Input from the Disability Community

A significant concern with overlays is that they are often developed without meaningful consultation from people with disabilities. This leads to solutions that don't meet the needs of the people they are meant to help. Accurate accessibility solutions come from understanding the lived experiences of users with disabilities. Still, overlays are usually designed by developers and business owners without input from the very users who would benefit from them. This disconnect leads to tools that miss the mark and fail to improve the web experience for those who need it most.

Legal and Ethical Issues with Overlays

Overlay dependence is not a purely technical challenge in terms of web accessibility. There can also be considerable legal and ethical issues about overlays. It is understandable why businesses want overlays to solve problems fast and avoid legal exposure under the ADA and WCAG; however, that does not replace a legitimate intent to reach an accessible situation for a website and its functions at all levels of users.

Not a Legal Safe Harbor

Some organizations operate under the assumption that using an overlay automatically makes their website compliant with accessibility regulations, such as the ADA or WCAG. Unfortunately, this is a misconception. The ADA requires websites to be substantively accessible to people with disabilities, not just technically compliant in some superficial sense. Simply adding an overlay doesn't ensure that a site is fully accessible. Businesses might still be legally vulnerable should these core structural issues of the site remain unchanged.

Failure to Address Core Issues

Using overlays to check the "accessibility box" doesn't address the more profound, ongoing issues that impact users with disabilities. Websites that rely on overlays instead of fixing their foundational problems are still not compliant with the spirit of the law, which aims to provide accurate access and equality for all users. The failure to fully address core accessibility issues—such as incorrect HTML structure, poor navigation, or missing ARIA attributes—means that the website still presents user barriers, exposing businesses to legal risks and reputational damage.

Ethical Responsibility

Accessibility ethically means equal availability to people with diverse abilities, more than meeting the minimum requirements of the law. Using overlays implies that businesses prioritize convenience over the interests of users with disabilities. Rather than designing accessible sites, companies take shortcuts to get by. This approach fails to show a real commitment to accessibility and inclusivity, the workhorses of ethical design.

False Sense of Achievement

Overlays could be a way for businesses to feel like they've overcome their accessibility problems, leading to complacency. The sense of accomplishment gets in the way of true inclusion. Unless companies actively work to address the source of inaccessibility and not just use quick fixes, they fail to create websites that serve all their customers. This affects their legal standing, brand reputation, and user trust.

Accessibility on the web means equal opportunities for all, and overlay tools just can't provide that. Taking temporary measures instead of investing in real solutions means businesses are taking a risk not only legally but also ethically by not allowing the inclusion of all people into their services and experiences.

Better Solutions for Web Accessibility

This means that businesses should work to create accessible websites instead of using overlays. Though overlays seem fast, they don't improve the underlying website usability issues. Here are several ways to achieve actual web accessibility, not cosmetic accessibility.

Addressing the Root Causes of Accessibility Problems

Writing semantic HTML that communicates the structure and meaning of the content is the most critical issue to fix in making a website accessible. Proper use of HTML elements, such as instances, headings, and lists, allows assistive technologies such as screen readers to interpret and more easily navigate a page. Adding ARIA attributes such as roles and labels provides context for users with disabilities.

Progressive Enhancement for Accessibility

Progressive enhancement means creating a website that delivers basic functionality and content to all users regardless of device or technology. Progressive enhancement starts with a solid web design that is effective for most people but enriches the experience further for those users whose clients are capable of it. This idea is not about layering functionality added after the fact on top of a base site but right out of the box. It's within the architecture: accessibility.

Usability Testing and Feedback

The best way to discover accessibility issues is to conduct accurate testing with users with disabilities. This would help companies understand the particular problems of users with various disabilities. Testing should be done at the end of development and regularly to ensure the site is accessible as it develops. It will also enable companies to understand the users' needs firsthand and provide effective solutions.

Continuous Monitoring and Updates

Accessibility is not something to be fixed once and left; it's a commitment. Websites require accessibility audits, which ought to be carried out regularly to ensure accessibility to all kinds of disabled people. This means checking broken links, missing alt text, and improperly labeled forms. Web technologies are constantly developing, and new accessibility guidelines are issued regularly. One should raise this issue with businesses when upgrading their websites.

The Overlays vs. Authentic Accessibility Debate

The debate about using overlays rather than implementing accessibility has gained serious momentum among developers and the accessibility community. While overlays sound like an attractive solution, they are simultaneously defamed as quick fixes that don't solve more profound accessibility problems. Let's distill the critical points in this debate and explain why businesses should choose a more thoughtful, thorough approach.

The Accessibility Community's Standpoint

From an accessibility standpoint, overlays are often seen as a way for businesses to "check the box" without genuinely addressing accessibility. Accessibility advocates argue that relying on overlays undermines the work of building truly accessible websites, as they focus on cosmetic changes instead of addressing the deeper issues that affect users. These issues include structural problems like incorrect HTML, poor navigation, and missing ARIA labels—problems that overlays cannot solve.

Many accessibility experts believe that true accessibility is achieved when websites are designed with accessibility in mind from the very beginning. This approach doesn't just provide a better user experience for people with disabilities but also helps businesses avoid legal risks and create a more inclusive digital space for all users.

What's at Stake?

This discussion holds high stakes: if the business goes by overlays in meeting accessibility guidelines, this puts users at risk with a disability and may find their way into the courts of justice. By providing quick fixes, companies stand the chance of losing their direction to a website that may visually appear accessible yet isn't functional and user-friendly for disabled persons. And most importantly, this can hamper brand reputation and lead to a loss in business.

The actual cost of overlays is not just in the technical problems they cause—it's in the missed opportunity to create a truly inclusive, welcoming web experience. When businesses choose overlays over authentic accessibility, they choose convenience over inclusion.

Instead of continuing to make quick fixes, businesses need to be committed to building fully accessible websites. This means taking root causes, testing with people with disabilities, and continuous improvements to accessibility over time. Thus, this sets the stage for an improved web experience in the long run since all people concerned are participants. Businesses would do their job to ensure there is an accessible internet.

Moving Towards True Accessibility

While these overlays are easily implemented, they do not resolve some of the more profound problems that people with disabilities face. They deal only with surface issues, such as increasing font size and adjusting high-contrast colors, without addressing the root of the problem that makes a website genuinely accessible. The result is a sham of accessibility that carries several potential legal risks, damaging brand reputation and opening businesses up to lawsuits.

Instead, businesses should design websites to be inherently accessible. This means addressing root-cause accessibility issues, designing with semantic HTML, testing with real users, and continually updating the website to meet ever-evolving standards. This way, a business can create a more inclusive, user-friendly website and prove its commitment to accessibility.

Accessibility with dignity means thoughtful, inclusive design that works for everyone regardless of ability and a path to genuinely accessible web experiences, not through shortcuts like overlays. It is time to move beyond the quick fixes and create websites that serve all users for the betterment and accessibility of the web for one and all.