What is web accessibility and why does it matter?

This article is a ground-up look at what web accessibility really means. Not just in terms of compliance or checklists, but in terms of real people trying to use your product.

By Vladimir Dmitriev, Digital Accessibility Expert at Attico

Jul 08, 2026 10 min read

What is web accessibility and why does it matter

Introduction

Over the years, I’ve worked on projects aimed at improving web accessibility and helping businesses understand why it matters. No matter the company’s size or industry, I keep seeing the same thing — accessibility is often ignored, undervalued, or misunderstood.

Sometimes, I join a project that already looks “done.” The designs are sharp. The content is live. The client is excited. But within the first ten minutes of testing, I realize that large parts of the site are completely unusable for a portion of the audience.

“It’s working fine,” someone will say. But it’s not working for everyone, and that’s the whole point.

This article is a ground-up look at what web accessibility really means. Not just in terms of compliance or checklists, but in terms of real people trying to use your product. I’ll share practical advice, explain the most common failures, and walk you through what it takes to get it right.

What is meant by web accessibility?

Let’s begin by asking the question that many still hesitate to ask out loud: what is web accessibility?

It’s the practice of making websites and digital products usable by everyone, regardless of ability, technology, or environment. That includes users with:

Permanent impairments

visual (blindness, low vision, color blindness), auditory (deafness, hearing loss), motor or physical (reduced dexterity, tremors, limited use of hands), and cognitive or neurological disabilities (dyslexia, ADHD).

Temporary injuries or conditions

a broken wrist, a broken arm, or recovery from surgery.

Situational challenges

using a phone one-handed in bright sunlight, or browsing in a noisy environment where audio is not practical.

Technology or environment-related limitations

slow internet, limited bandwidth, smart TVs, gaming controllers, or other alternative input devices.

Age-related limitations

changes in vision, hearing, dexterity, mobility, or cognitive processing that can come with age.

“Accessibility is about designing for reality,” I tell clients. “And reality is messy.”

Not everyone uses a mouse. Not everyone sees color the same way. Not everyone understands layouts the same way. That’s why the goal of web accessibility is to build something resilient, something that works across all kinds of users, technologies, and conditions.

Why website accessibility matters

Over 1.3 billion people globally live with some form of disability, according to the World Health Organization. But when we talk about web accessibility, we’re not only talking about permanent disabilities. Think about:

Elderly users with slower reflexes or deteriorating vision
Parents using phones while carrying their kids
Office workers in loud environments trying to read subtitles
Power users who navigate entirely by keyboard.

“Everyone benefits from accessibility at some point,” I remind teams. “It’s not just about a minority — it’s about humanity.” Website accessibility isn’t just about giving everyone equal access to online services — it matters for many other reasons too. Let’s talk about what happens when it’s missing and what it costs.

You’re legally vulnerable

The need for a web accessibility standard for regulations led to the Web Content Accessibility Guidelines (WCAG).

In the U.S., the Americans with Disabilities Act of 1990 sought to provide people with disabilities equal access to government agencies, schools, hospitals, and countless other locations and entities, both public and private. This includes digital assets, such as IT, applications, hardware and web-based assets, such as websites, tools, and cloud databases.

Section 508 of the Rehabilitation Act requires federal agencies to make their digital services accessible. These rules can also apply to vendors and contractors who build or support digital products for the federal government.

Outside the United States, other countries also have regulations requiring web accessibility, including the Canadian Human Rights Act and the Law of the People’s Republic of China on Protection of Disabled Persons. In the EU, the European Accessibility Act makes web accessibility mandatory for many digital services starting in June 2025.

I’ve seen clients scramble to meet compliance deadlines, not because they were careless but because they were unaware.
“We had no idea we were non-compliant,” one product owner told me. “We just assumed modern frameworks handled it.”
They don’t. And by the time you realize it, it might already be too late — your product is live, users are excluded, and legal pressure is mounting.

You’re losing users

More than one in four adults in the United States has some form of disability. If a website isn’t accessible, many people simply won’t be able to find the information they need, sign up, or use your services — for example, complete a purchase.

A missing label, a skipped heading, a broken form field — these may seem like small oversights, but for someone using assistive technology, they can make a service unusable. Instead of reaching out or submitting feedback, many users simply leave.

The result? You lose potential customers often without even knowing it.

You’re undermining your brand

Modern users expect inclusive design. If your site works well only for some, it sends a message: “This wasn’t built for you.”

Inaccessible design isn’t just an oversight; it’s a form of exclusion. And in a competitive market, that can hurt more than you think.

What is web accessibility testing and where to start?

Web accessibility testing is one of the usability testing methods that checks whether people with disabilities can use your website or digital product effectively. In practice, that means reviewing key pages, components, and user flows against WCAG, most often at the AA level.

The good news is that you can start fixing things right now. The first step is to use a web accessibility checker. Here are a few tools I recommend:

Axe DevTools: Powerful, developer-friendly, and integrates with your browser.
HeadingsMap: Visualizes your heading hierarchy to spot structural problems.
Taba11y: Helps track tab navigation and focus traps.

These tools can catch a wide range of issues, from contrast problems to missing ARIA roles. But here’s the key:

“No tool replaces human judgment,” I always say. “A web accessibility checker is a flashlight, not a map.”

Automated tools can get you part of the way. But a full web accessibility audit should also include:

Manual keyboard navigation
Screen reader testing (e.g., NVDA, VoiceOver)
Error message handling
Modal and overlay interactions
Form validation behavior.

For web development teams, especially those using Drupal, I recommend running these checks alongside a structured Drupal QA process. Many issues stem from view templates, dynamic blocks, or inconsistent content entry, and QA helps surface these problems in real-world flows.

Photorealistic over the shoulder portrait

The WCAG framework — simplified

Almost every regulation worldwide references the WCAG, but if you’ve ever opened the official docs, you know it can be overwhelming.
So here’s how I summarize the web accessibility standards for teams:

Perceivable

Can users perceive all information? (alt text, captions, logical structure)

Operable

Can users interact with everything using any input method?

Understandable

Is the interface consistent, predictable, and clear?

Robust

Does it work reliably across devices and assistive technologies?

We convert this into a working web accessibility checklist that includes:

Contrast ratios (AA level minimum)
Focus states and keyboard paths
Heading hierarchy
Skip links and landmark regions
Form field labels and error states
ARIA roles where appropriate.

“Standards matter,” I tell devs, “but usability comes first. If it meets WCAG but still confuses users — it’s not accessible.”

Real-world failure points I see every day

After years of running web accessibility audits, I can tell you exactly where most teams fail. It’s rarely in advanced ARIA patterns or obscure edge cases.
It’s the basics.

Form fields with missing or duplicated labels
Buttons without accessible names (“Click here” isn’t enough)
Modals that trap focus and never return it
Carousels with no controls or pause functionality
Color contrast below WCAG thresholds
Tables without proper <th> and <scope> usage.

And yes, many of these are shipped by large companies with full QA teams because no one tested them using a screen reader, with one hand, or under stress.

“I don’t need more tools,” one accessibility lead told me. “I need developers to slow down and think.”

The role of accessibility consultants

A web accessibility consultant brings more than a list of errors. They bring perspective.

When I’m brought into a project, I simulate real-world experiences: keyboard-only use, screen magnification, slow internet, high-contrast mode. I test workflows end-to-end, not just components in isolation. And I guide teams through practical fixes, not vague warnings.

“A consultant doesn’t just flag problems,” I explain. “We help build habits.”

We also help teams shift from “reactive” to “proactive.” Instead of scrambling to patch, you start designing with accessibility in mind from day one.

Accessibility as process, not patch

If there’s one thing I wish more teams understood, it’s this: web accessibility isn’t something you add after launch. It has to be part of your workflow from the start.

Here’s how we help teams build a real process:

Check early

Use a web accessibility checker in your dev workflow.

Review design

Don’t just test after dev. Run audits on Figma files.

Include QA

Add web accessibility testing to your test plans.

Document standards

Use a shared web accessibility checklist.

Audit regularly

Schedule full web accessibility audits every quarter.

Train your team

Designers, devs, PMs — everyone needs to know the basics.

Assign ownership

Someone needs to be accountable for accessibility outcomes.

And when you’re doing a major redesign or system migration? Bring in a team that provides web accessibility services from day one. You’ll save time, money, and headaches later.

We do this as part of our full-cycle Drupal consultancy, especially when accessibility is a legal or contractual requirement.

Accessibility in complex systems

I’ve worked on large platforms with hundreds of components, multiple content creators, and third-party embeds. In these environments, the hard part isn’t just building accessible features. It’s making sure those features stay accessible as the system evolves. Every new change can accidentally break something that used to work, so a big part of the job is catching and preventing those regressions before they reach users.

That’s where web accessibility testing becomes essential. We use:

Automated CI tools (like Pa11y, Axe CLI)
Component-level snapshot tests
CMS content entry validation
Focus state visual audits.

“At scale, accessibility is a moving target,” I tell clients. “But if it’s built into your QA and your values, you can keep up.”

What empathy looks like in practice

Here’s a story I share often.

I once worked with a public health org. Their content team was excited to launch a new landing page for COVID-19 resources. It was mobile-friendly, colorful, and packed with helpful info.

After a quick web accessibility audit, I found the page had no heading structure. Screen readers read it as one long blob — no anchors, no landmarks, no keyboard paths. It looked great but for blind users, it was unusable.

“But no one complained,” someone said.
“That’s the problem,” I replied. “They couldn’t even get far enough to complain.”

That’s what inaccessible design does. It silences people. It shuts them out.

Final thoughts: accessibility is what makes the web human

So, once again: what is web accessibility? It’s more than code. More than compliance. More than checklists.

It’s about empathy at scale. About recognizing the full diversity of your audience. About remembering that people use the web in different ways — and they all deserve access.

And why does web accessibility matter? Because inclusion isn’t a luxury. It’s a basic expectation.

You don’t need to fix everything today. But you do need to start.

Run a web accessibility checker. Use a web accessibility checklist. Do a proper web accessibility audit. Bring in a web accessibility consultant if needed. Make accessibility part of your QA, your planning, your design reviews.

Every small improvement you make opens the door wider. And that’s how we build a better web — one accessible page at a time.