Building for Everyone: Why Accessibility Matters in Web and Mobile Development

“The power of the Web is in its universality. Access by everyone regardless of disability is an essential aspect.”

In today’s digital era, accessibility isn’t optional — it’s fundamental. Every button we design, every color we choose, and every line of code we write shapes someone’s experience of the world.
Accessibility means making sure everyone — including people with disabilities — can use, understand, and interact with your website or app. It’s not just about compliance; it’s about empathy in engineering.

Why Accessibility Matters

► Legal Compliance

Accessibility is no longer a “nice-to-have.” It’s the law. Lawsuits over inaccessible websites and apps have skyrocketed in recent years. The Web Content Accessibility Guidelines (WCAG) are now as standard as HTML and CSS.

Failing to comply doesn’t just alienate users — it can drag your company into court. The EU Web Accessibility Directive (2016/2102) and the European Accessibility Act (EAA) make accessibility a legal requirement for digital products and services in the EU.

The EAA became fully enforceable on June 28, 2025. Member States had to integrate it into national law by June 28, 2022, making accessibility mandatory for most public and private digital services.

► Ethical Responsibility

Roughly 1 in 5 people have a disability. That’s not a small group — that’s 20% of your potential users.

Accessibility is about inviting them in, not shutting them out.
It’s how you build a brand rooted in empathy, respect, and inclusion.
When your app says “everyone’s welcome” — make sure your code agrees.

► Improved User Experience for All

Accessibility improvements help everyone — not just those with disabilities.

  • High contrast helps users outdoors in sunlight.
  • Keyboard navigation helps power users.
  • Captions help users in noisy environments.
  • Clear labels help people learning your language.

Accessibility is usability. When you make your product accessible, you make it better for every human who touches it.

What are the 4 principles of web accessibility?

Making sure your website is accessible is a case of understanding the key principles, and using them to qualify all of your design decisions. Accessibility has four key principles – ask yourself if your website is…

Perceivable? Can your website be accessed through sight, hearing, and/or touch?

Operable? Is your website versatile in its compatibility with a keyboard, mouse, or other technology?

Understandable? Is the content of your website easy to understand, follow, and navigate?

Robust? Does your website work across browsers and devices, and is it compatible with assistive
technologies?

Rules to Improve Web Accessibility

1. Add Alternative Text

Whenever you use non-text elements (like images, icons, or multimedia), always provide a text equivalent so assistive technologies can convey that information.

Do this:

  • Fill the alt-text field when uploading images.
  • Name files descriptively (e.g., team-photo.jpg instead of DSC089.jpg).

 

2. Do Not Depend on a Single Sense

Don’t rely solely on color, shape, sound, or position to communicate meaning.

Avoid:

  • “Required fields are marked in red.”
  • “Press the button on the left.”

Instead:

  • Use text or icons to reinforce visual cues.
  • Provide multiple ways to perceive information.

 

3. Organize and Structure Content

Divide information into logical sections using semantic elements like <h1>, <h2> and <p>. This helps assistive technologies understand the document’s flow and lets users navigate efficiently.

Think of headings as a roadmap — don’t make your visitors explore blind alleys.

 

4. Ensure Keyboard Access

Many users rely solely on a keyboard. Every part of your website must be usable without a mouse.

Avoid:

  • Hover-only dropdown menus.
  • Drag-and-drop with no alternative input.

Do:

  • Enable full tab navigation.
  • Provide visible focus states.

 

5. Give Users Enough Time

People read, think, and act at different speeds.

Avoid:

  • Auto-advancing banners.
  • Forms that time out too quickly.

Do:

  • Allow users to pause, stop, or extend time limits.

 

6. Don’t Create Content That Interferes with Access

Auto-playing audio can interrupt screen readers, and unexpected pop-ups can disorient users.

Avoid:

  • Auto-start videos or sound.
  • Opening new windows without warning.

Do:

  • Let users control when the media plays.
  • Give clear alerts before new content appears.

 

7. Identify Hyperlinks and Content Clearly

Use short, descriptive link text that tells users exactly where the link leads. “Click here” tells no story — “Download annual report (PDF)” does.

 

8. Use Consistent Interfaces

Consistency reduces cognitive load. Keep buttons, navigation, and colors predictable across your site or app. When users know what to expect, they can focus on content, not confusion.

9. Help Users Avoid Mistakes

Mistakes happen — your interface should handle them gracefully.

Avoid:

  • Label form fields clearly.
  • Highlight errors with text, not just color.
  • Provide helpful guidance for correction.

Accessibility for Mobile Applications

Accessibility principles extend beyond the browser. For iOS and Android developers, here’s what to remember:

  • Add accessibility labels (accessibilityLabel, contentDescription) for every interactive element.
  • Support VoiceOver (iOS) and TalkBack (Android).
  • Respect Dynamic Type, Dark Mode, and High Contrast settings.
  • Provide alternatives for gesture-only actions.
  • Keep navigation predictable and screen transitions clear.
  • Include an in-app accessibility statement describing accessibility levels and feedback
    channels.

The European Accessibility Act (EAA): What’s New

Starting June 28, 2025, accessibility becomes mandatory across the EU for a wide range of digital products and services — not just government websites.

This includes:

  • e-commerce websites and apps
  • banking services
  • e-books and digital documents
  • communication tools
  • transport booking apps and terminals

 

If your company serves European users, it’s time to check compliance now.

Developer’s Quick Checklist

► Web

  • All images have descriptive alt text
  • Headings are logical and semantic
  • Keyboard navigation works everywhere
  • Sufficient color contrast
  • Forms are labeled and errors explained
  • No auto-playing media
  • Links are descriptive
  • Accessibility statement published

 

► Mobile

  • Accessibility labels and hints added
  • VoiceOver / TalkBack tested
  • Dynamic text and contrast supported
  • No gesture-only controls
  • Clear navigation and feedback
  • In-app accessibility statement

Accessibility: Empathy in Code

Accessibility isn’t just about compliance — it’s about compassion. It’s how we, as developers and designers, say: “Everyone belongs here.”

When you write accessible code, you’re not just improving your app — you’re improving someone’s life.So whether you’re shipping a mobile app, or a web site, remember: Great developers don’t just write clean code — they write kind code.