You've probably seen the ads. A little widget you install on your website that supposedly makes it fully accessible and WCAG compliant overnight. Companies like AccessiBe, UserWay, AudioEye, and EqualWeb promise to solve your accessibility problems with a single line of JavaScript. It sounds almost too good to be true — and unfortunately, it mostly is.

This is a topic that matters enormously, especially with the European Accessibility Act coming into force. Irish businesses are rightly concerned about making their websites accessible, and overlay companies are spending enormous sums on marketing to position themselves as the easy answer. Before you hand over your credit card, you deserve an honest breakdown of what these tools actually do, what they don't do, and what the disability community — the people these tools are supposedly built for — actually thinks about them.

What Are Accessibility Overlays?

An accessibility overlay is a piece of third-party JavaScript that sits on top of your website and attempts to fix accessibility issues on the fly. Most of them add a small icon (usually a wheelchair symbol or a person icon) to the corner of your site. When clicked, it opens a toolbar that lets users adjust things like text size, contrast, cursor size, font spacing, and sometimes offers a screen reader mode or text-to-speech.

The basic idea is appealing: rather than redesigning your entire website to meet WCAG (Web Content Accessibility Guidelines) standards, you just install an overlay and it patches the problems automatically. Some vendors go further, claiming their AI analyses your pages and fixes issues like missing alt text, improper heading structures, and keyboard navigation problems in real time.

On paper, this sounds like a reasonable approach. In practice, it's far more complicated — and the gap between what's promised and what's delivered has created genuine controversy in the accessibility community.

What Overlay Companies Claim

The marketing from overlay companies tends to make several bold claims. They promise WCAG 2.1 AA compliance (sometimes even AAA) through automated remediation. They suggest their AI can identify and fix accessibility barriers without any changes to your underlying code. They imply — and sometimes state outright — that installing their product protects you from accessibility-related legal action. And they position their product as a cost-effective alternative to manual accessibility remediation.

For a small business owner in Ireland who's just learned about the European Accessibility Act and is worried about compliance, these claims are incredibly tempting. A few hundred euro per year for a widget that handles everything? Compared to thousands for a proper accessibility audit and remediation? It's easy to see why people reach for the overlay.

What Overlays Actually Do (and Don't Do)

Let's be fair and start with what overlays can do. The toolbar features — adjustable text size, contrast modes, font changes, cursor adjustments — these work to some degree. If someone needs larger text or higher contrast, the toolbar can provide that. These are essentially user preference tools, similar to what's already built into every modern operating system and browser.

Where overlays fall down badly is in the automated remediation claims. Here's why:

AI-generated alt text is unreliable. Overlay companies claim their AI can automatically generate descriptive alt text for images. In practice, the results are frequently inaccurate, unhelpful, or outright wrong. An AI might describe a photo of your team as 'group of people standing in room' when what a screen reader user actually needs is 'The ProfileTree team at their Belfast office.' Context matters in alt text, and automated systems can't understand the purpose an image serves on your specific page.

Structural issues can't be fixed by an overlay. If your website has a broken heading hierarchy (jumping from H1 to H4, or using headings purely for visual styling), an overlay can't fix that meaningfully without understanding your content structure. If your forms lack proper labels, an overlay's attempt to guess what each field is for will often be wrong. If your navigation isn't keyboard-accessible because of how it's coded, an overlay's attempts to patch keyboard support frequently create new problems — elements that gain focus in the wrong order, or interactive elements that behave inconsistently.

Dynamic content breaks overlays. Modern websites are full of dynamic content — modal windows, dropdown menus, accordions, carousels, live-updating content. These interactive elements need to be built with accessibility in mind from the ground up, using proper ARIA attributes and keyboard event handling. An overlay sitting on top of this code can't reliably patch these interactions. It often makes them worse by adding conflicting ARIA roles or interfering with the page's existing accessibility features.

Screen reader users already have their tools. Here's something that overlay companies rarely acknowledge: people who use screen readers already have their own assistive technology configured exactly how they need it. JAWS, NVDA, VoiceOver — these are sophisticated tools that users have spent considerable time setting up. An overlay that tries to provide its own 'screen reader mode' often conflicts with these tools, creating a worse experience than the unmodified website would have provided.

What the Disability Community Actually Says

This is the part that should really give any business owner pause. The disability community — the very people accessibility overlays claim to serve — has been overwhelmingly vocal in opposing them.

The National Federation of the Blind in the US issued a formal statement opposing overlay products, describing them as creating barriers rather than removing them. The OverlayFactSheet.com website, signed by hundreds of accessibility professionals, developers, and disability advocates, lays out the technical and practical case against overlays in detail. Prominent blind users and screen reader experts have published countless articles and videos demonstrating how overlays actively interfere with their ability to use websites.

The core complaint is consistent: overlays make things worse, not better. They add extra steps to navigation. They interfere with assistive technology. They sometimes block content entirely. And the 'accessibility mode' they offer is often a degraded version of the website rather than an improved one.

There's also a philosophical objection that carries real weight. Accessibility overlays essentially say 'disabled users should get a separate, modified version of the website' rather than 'the website should be built to work for everyone.' That approach — separate but supposedly equal — has a troubling history, and the disability community rightly pushes back against it.

The Legal Reality

One of the most common selling points for overlays is legal protection. The argument goes: install our product, and you're covered if someone files an accessibility complaint. The reality in both the EU and US suggests otherwise.

In the United States, where web accessibility lawsuits are most common, companies using accessibility overlays have been sued at a higher rate than those without them, according to analysis of court filings. The presence of an overlay does not constitute a valid defence in accessibility litigation. Several lawsuits have specifically named overlay vendors and the companies using their products.

For Irish businesses preparing for the European Accessibility Act, the situation is similar. The Act requires that products and services meet specific accessibility standards. An overlay that claims to meet these standards but doesn't actually deliver WCAG compliance doesn't protect you — it gives you a false sense of security while leaving the underlying problems in place. If a complaint is made to the relevant authorities, they'll assess the actual accessibility of your website, not whether you've installed a particular product.

In fact, relying on an overlay could arguably make your legal position worse. It demonstrates you were aware of accessibility requirements (you bought a product to address them) but didn't take effective action to meet them. That's a harder position to defend than simply not being aware of your obligations.

Why Overlays Are So Heavily Marketed

If overlays don't work well, why are they everywhere? The answer is straightforward: they're enormously profitable. Overlay companies charge subscription fees (typically €500-€2,000+ per year per website) for a product that costs very little to develop and maintain. That revenue funds aggressive marketing campaigns, SEO efforts, social media advertising, and affiliate programmes that incentivise web designers and agencies to recommend the product.

Some overlay companies have also pursued aggressive legal strategies against critics, sending cease and desist letters to accessibility professionals who publish critical analysis. This has had a chilling effect on public discussion, though the backlash has arguably made the criticism louder and more organised.

For web designers and agencies, recommending an overlay is easy money with minimal effort — far easier than doing proper accessibility work. This creates a perverse incentive where the people advising businesses on accessibility have a financial reason to recommend the cheapest, easiest option rather than the most effective one.

The Few Things Overlays Can Legitimately Help With

In fairness, it's not all bad. There are a few narrow use cases where overlay-style tools have some value. A customisation toolbar that lets users adjust text size, line spacing, and contrast can be a genuinely helpful addition to a website that's already properly accessible. The key phrase there is 'already properly accessible' — the toolbar supplements good accessibility rather than replacing it.

Some overlay tools also offer accessibility monitoring features that scan your site for issues and provide reports. These can be useful as one part of an accessibility testing strategy, similar to automated testing tools like axe or WAVE. But monitoring is very different from remediation. Knowing you have problems isn't the same as fixing them.

The danger comes when businesses treat these supplementary features as a complete accessibility solution. They're a garnish, not the meal.

What Irish Businesses Should Do Instead

If overlays aren't the answer, what is? The honest truth is that there's no shortcut to genuine web accessibility. But it doesn't have to be as expensive or overwhelming as you might think.

Start with an audit. Use free tools like the WAVE Web Accessibility Evaluator or Google Lighthouse to get an initial picture of your site's accessibility issues. These automated tools won't catch everything (they typically find about 30-40% of accessibility issues), but they'll identify the most common problems — missing alt text, colour contrast failures, missing form labels, broken heading structures.

Fix the foundations first. Many accessibility issues are straightforward to fix: adding alt text to images, ensuring proper heading hierarchy, adding labels to form fields, making sure links have descriptive text. A competent web developer can address these basics relatively quickly and affordably. These foundational fixes deliver far more accessibility improvement than any overlay.

Test with real assistive technology. Download NVDA (free screen reader for Windows) and try to navigate your own website using only your keyboard and the screen reader. This experience is eye-opening and will reveal issues that no automated tool can find. If that feels too technical, hire a specialist to conduct manual testing — it's money well spent.

Build accessibility into your process. Rather than treating accessibility as an afterthought to be bolted on later, make it part of how you build and maintain your website. When you add new content, include alt text. When you create new pages, check the heading structure. When you add forms, ensure they're properly labelled. This ongoing approach is far more sustainable than any one-off fix.

Get a professional audit for the European Accessibility Act. If you're a business that falls within the scope of the EAA (and many Irish businesses will), invest in a proper accessibility audit from a qualified specialist. The cost is typically €1,500-€5,000 depending on the size and complexity of your site, and it gives you a clear roadmap of what needs to be fixed and in what priority order. This is genuine compliance preparation, not theatre.

How to Evaluate Accessibility Claims

Whether you're being sold an overlay product or any other accessibility solution, here are some red flags to watch for. Be sceptical of anyone claiming full WCAG compliance through automated means alone — the standard explicitly requires human judgement for many success criteria. Be wary of companies that focus on fear-based marketing around lawsuits rather than genuine user benefit. Question any product that claims to work through a single line of code — accessibility is complex and context-dependent. And always check what the disability community says about a product before buying it. If the people it's supposed to help are actively campaigning against it, that tells you everything you need to know.

The Performance Impact Nobody Mentions

There's another dimension to this that rarely gets discussed: performance. Accessibility overlays load additional JavaScript on every page of your website. This adds to your page weight, increases loading time, and can negatively impact your Core Web Vitals scores — the very metrics Google uses as ranking signals.

The irony is sharp. You install a product to improve accessibility, and it slows your site down — which itself is an accessibility issue for people on slower connections or less powerful devices, who are disproportionately likely to be elderly or from lower-income backgrounds. It also hurts your SEO performance, meaning fewer people find your site in the first place.

Final Thoughts

Accessibility overlays are an attractive idea that doesn't deliver on its promises. They offer convenience and the appearance of compliance, but they don't provide genuine accessibility for the people who need it most. The disability community has been clear and consistent in saying that overlays make their experience worse, not better. The legal protection claims don't hold up under scrutiny. And the money spent on annual overlay subscriptions would almost always be better invested in actual accessibility improvements to your website.

If you genuinely care about making your website accessible — and as a business operating in Ireland, you increasingly have both a moral and legal reason to — invest in doing it properly. Fix the real issues in your code and content. Test with real assistive technology. Build accessibility into your process from the start. It takes more effort than installing a widget, but it actually works. And that, ultimately, is what matters.