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An introduction to accessibility for frontend developers: the toolkit to help you get started

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AccessibilityFrontend

Introduction

Web accessibility is SUPER important. It ensures that websites and applications are usable by everyone, including people with disabilities. As frontend devs, we have the power and responsibility to create experiences that don’t exclude anyone based on their abilities.

In a recent project I worked on, we spent a bit of time working towards better WCAG compliance and making our application more accessible. Before that, I honestly hadn’t spent much time focusing on accessibility, and am still by no means an expert in it. But, having recently gone through learning a bit more about it, I thought I’d share a brief intro, and provide others with a toolkit to help you get started!

Understanding Web Accessibility

What is WCAG?

WCAG is the “gold standard” for web accessibility. The WCAG guidelines are developed by the W3C Web Accessibility Initiative (WAI). The guidelines are organized around four main principles:

  • Perceivable: Information must be presentable in ways users can perceive
  • Operable: Interface components must be operable by all users
  • Understandable: Information and UI operation must be understandable
  • Robust: Content must be robust enough for various assistive technologies

Common Accessibility Barriers

Once you start testing for accessibility, a few common issues tend to come up. Some of the most common issues that we ran into when working toward making our app more accessible:

  • Missing or inadequate alt text for images
  • Poor color contrast
  • Keyboard navigation problems
  • Missing form labels
  • Improper heading structure

Essential Tools for Accessibility Testing

Automated Testing Tools

While automated tools can’t catch everything, they’re excellent for finding obvious issues:

  • Axe DevTools for Web: Industry-standard accessibility testing tools
  • Lighthouse: Built into Chrome DevTools, includes accessibility audits
  • WAVE Chrome Extension: Web accessibility evaluation tool via chrome extension, developed by WebAIM. I haven’t used as extensively as Axe, but briefly used it when tutoring at a coding bootcamp and had a great experience with it!

Manual Testing Techniques

  • Keyboard Navigation: Navigate your site using only Tab, Shift+Tab, Enter, and arrow keys
  • Screen Reader Testing: Use NVDA or Narrator for Windows, or VoiceOver for Mac
  • Color Contrast: Test with tools like WebAIM’s Color Contrast Checker. A lot of times, axe’s chrome extension may catch these issues as well.

Implementation Best Practices

Semantic HTML

Use proper HTML elements for their intended purpose:

  • Headings (h1-h6) for document structure
  • Button elements for interactive actions
  • Form labels properly associated with inputs
  • Lists for grouped content

ARIA When Needed

ARIA (Accessible Rich Internet Applications) attributes help when semantic HTML isn’t enough, helping screen readers to communicate the purpose of elements to users. Some key attributes to pay attention to:

  • aria-label for accessible names (bare minimum)
  • aria-describedby for additional context
  • aria-expanded for collapsible content
  • aria-live for dynamic content updates

Focus Management

Ensure keyboard users can navigate effectively:

  • Visible focus indicators
  • Logical tab order
  • Skip links for navigation
  • Focus management in single-page applications

Using a good UI Component library

A good UI component library can go a long way toward improving accessibility, a lot of times without you even realizing it. Many of the more mature component libraries like Material UI and Chakra build accessiblity into their components by default.

For example, their table components already manage keyboard navigation, require ARIA roles, etc.

With that being said, these component libraries won’t make your app accessible on their own. You will still need to provide accessible labels, meaningful alt text, and a logical DOM structure.

Getting Started Checklist

Start with these high-impact improvements:

  1. Add alt text to all images
  2. Ensure proper heading hierarchy
  3. Test keyboard navigation
  4. Check color contrast ratios
  5. Add form labels
  6. Run automated accessibility tests

Resources for Continued Learning

Conclusion

Accessibility isn’t just about compliance, it’s about creating better experiences for everyone. Start small, test frequently, and gradually build your accessibility expertise. Every improvement makes the web more inclusive. Working towards WCAG compliance and a more accessible application is a tall task that feels never ending (and probably will be), but it’s really cool to see how doing small improvements like these can make your app more inclusive for those with disabilities!