A Beginner's Guide to Setting Up Web Accessibility Testing

You’ve probably heard the term “web accessibility” thrown around, but maybe you’re not sure where to start. Let’s be honest: testing for accessibility can feel like a big, scary task when you’re new to it. But here’s the good news — it doesn’t have to be. With the right tools and a little bit of know-how, you can start making your websites more inclusive for everyone, including people with disabilities.

At PythonSkillset, we believe that accessibility isn’t just a nice-to-have; it’s a fundamental part of good web development. And the best part? You don’t need to be an expert to begin. Let’s walk through a simple, beginner-friendly setup for web accessibility testing.

Why Accessibility Testing Matters

First, a quick reality check. According to the World Health Organization, over a billion people worldwide have some form of disability. That’s a huge chunk of your potential audience. If your site isn’t accessible, you’re effectively locking the door on a significant number of users. Plus, many countries have legal requirements (like the Americans with Disabilities Act or the European Accessibility Act) that make accessibility a must.

But beyond compliance, it’s about doing the right thing. An accessible website is easier for everyone to use — including people on mobile devices, those with slow internet, or even someone just trying to navigate with a keyboard because their mouse broke.

What You’ll Need to Get Started

You don’t need a fancy lab or expensive software. Here’s the basic toolkit:

• A modern web browser (Chrome, Firefox, or Edge work great)
• A code editor (VS Code is a popular choice)
• A few free browser extensions (we’ll cover these below)
• A simple test page (you can use your own site or a sample HTML file)

That’s it. No PhD in human-computer interaction required.

Step 1: Install a Screen Reader (and Learn to Use It)

Screen readers are the backbone of accessibility testing. They convert text and interface elements into speech or braille, allowing blind or visually impaired users to navigate your site. The most common one is NVDA (free for Windows) or VoiceOver (built into macOS).

Here’s a quick exercise: Open your website, turn on the screen reader, and try to navigate using only your keyboard. Can you reach every link? Does the reader announce images properly? If you hear “image” without any description, that’s a red flag.

Don’t worry if it feels awkward at first. Even a few minutes of testing with a screen reader will reveal issues you never noticed before.

Step 2: Use Automated Testing Tools (But Don’t Rely on Them Alone)

Automated tools are great for catching low-hanging fruit. They can spot missing alt text, low color contrast, and broken heading structures in seconds. Some popular free options include:

• WAVE (browser extension) — gives you visual overlays showing errors
• axe DevTools — integrates directly into your browser’s developer tools
• Lighthouse (built into Chrome) — runs an accessibility audit as part of its performance report

Here’s a tip from the PythonSkillset team: run these tools on a few key pages first — your homepage, a contact form, and a product page. You’ll likely see a pattern of issues. Fix those, and you’ve already made a big difference.

But here’s the catch: automated tools only catch about 30% of accessibility problems. They’re great for spotting things like missing alt text or low contrast, but they can’t tell you if your navigation makes sense to someone using a screen reader. That’s where manual testing comes in.

Step 3: Manual Testing with Keyboard Navigation

This is the simplest test you can do, and it costs nothing. Unplug your mouse (or just don’t touch it) and try to navigate your entire page using only the Tab, Shift+Tab, Enter, and Arrow keys.

Ask yourself: - Can I reach every link and button? - Do I see a visible focus indicator (like a blue outline) around the currently selected element? - Does the order of navigation make logical sense?

If you get stuck somewhere or can’t tell where you are on the page, that’s a problem. Many users with motor disabilities rely entirely on keyboard navigation, so this test is non-negotiable.

Step 4: Check Color Contrast (It’s Easier Than You Think)

Low contrast text is one of the most common accessibility issues. If your light gray text sits on a white background, someone with low vision might not be able to read it at all.

You can use free tools like the WebAIM Contrast Checker or the Color Contrast Analyzer browser extension. Just pick your foreground and background colors, and it will tell you if they pass the WCAG (Web Content Accessibility Guidelines) standards.

A good rule of thumb: normal text should have a contrast ratio of at least 4.5:1. Large text (18px or larger) can get away with 3:1. If you’re designing a site, aim for even higher ratios — it’s better for everyone.

Step 4: Test with Real People (The Most Important Step)

No tool can replace the feedback of actual users. If you can, recruit a few people with disabilities to test your site. This might sound intimidating, but there are communities and platforms where you can find testers. Even asking a friend who uses a screen reader or has a motor impairment can give you insights you’d never get from a checklist.

If that’s not possible, try to simulate different scenarios. Use a screen reader yourself. Navigate with only a keyboard. Zoom your browser to 200% and see if the layout breaks. These simple actions will reveal a lot.

Step 4: Build a Simple Testing Checklist

You don’t need to memorize the entire WCAG (Web Content Accessibility Guidelines) document. Start with these five checks:

• All images have descriptive alt text — not just “image” or “photo123.jpg”
• Headings are in a logical order — H1, then H2, then H3, not jumping around
• Links are descriptive — avoid “click here” or “read more”
• Forms have clear labels — every input field should have a <label> element
• Color is not the only way to convey information — if you use red to indicate an error, also add an icon or text

Run through this checklist on your most important pages. You’ll be surprised how many issues you find in just a few minutes.

Step 4: Use the Right Tools for the Job

Here are three free tools that PythonSkillset recommends for beginners:

1. WAVE — This browser extension shows you accessibility issues directly on your page with icons and color-coded highlights. It’s visual and easy to understand.
2. axe DevTools — Integrates into your browser’s developer tools and gives you detailed reports with suggested fixes.
3. Lighthouse — Built into Chrome’s DevTools, it gives you an accessibility score and actionable recommendations.

Run all three on the same page. You’ll notice they catch different things. That’s okay — use them as a starting point, not a final verdict.

Step 4: Create a Simple Testing Checklist

Instead of trying to fix everything at once, focus on the most impactful issues first. Here’s a beginner-friendly checklist:

• All images have meaningful alt text — decorative images can have empty alt text (alt=""), but informative images need descriptions
• Headings are in a logical order — H1, then H2, then H3, no skipping
• Forms have clear labels — every input field should have a <label> element
• Links are descriptive — “Learn more about our pricing” is better than “Click here”
• Color contrast passes minimum standards — use a contrast checker tool
• The page works with keyboard only — no mouse required

Print this list and keep it next to your desk. It’s your new best friend.

Step 4: Use the Right Tools for the Job

Here are three free tools that PythonSkillset recommends for beginners:

• WAVE — A browser extension that shows accessibility issues directly on your page with icons and color-coded highlights. It’s visual and easy to understand.
• axe DevTools — Integrates into your browser’s developer tools and gives you detailed reports with suggested fixes.
• Lighthouse — Built into Chrome, it runs an accessibility audit as part of its performance report.

Run all three on the same page. You’ll notice they catch different things. That’s okay — use them as a starting point, not a final verdict.

Step 4: Create a Simple Testing Checklist

Instead of trying to fix everything at once, focus on the most impactful issues first. Here’s a beginner-friendly checklist:

• All images have meaningful alt text — decorative images can have empty alt (alt=""), but informative images need descriptions
• Headings are in a logical order — H1, then H2, then H3, no skipping
• Forms have clear labels — every input field should have a <label> element
• Links are descriptive — “Learn more about our pricing” is better than “Click here”
• Color contrast passes minimum standards — use a contrast checker tool
• The page works with keyboard only — no mouse required

Print this list and keep it next to your desk. It’s your new best friend.

Step 5: Make It a Habit, Not a Chore

The biggest mistake beginners make is treating accessibility testing as a one-time task. It’s not. Every time you add a new feature, update a page, or change a design, you should run through your checklist.

At PythonSkillset, we recommend integrating accessibility checks into your regular workflow. For example: - Add a quick accessibility check to your code review process - Run an automated tool before every deployment - Do a manual keyboard test after any major UI change

It takes five minutes, and it saves hours of rework later.

Final Thoughts

Setting up web accessibility testing doesn’t have to be overwhelming. Start small. Install a screen reader, run a few automated checks, and do a keyboard navigation test. You’ll be surprised how many issues you find — and how easy they are to fix.

Remember, accessibility isn’t a one-time project. It’s an ongoing practice. But once you get into the habit, it becomes second nature. And the best part? You’ll be building a web that works for everyone, not just the lucky few.

So go ahead, open your site, and give it a try. Your users will thank you.