Screen Reader Compatibility Checker — Free WCAG 2.1 AA Test

Screen Reader Compatibility Checker — Test Your Website for ARIA & WCAG Compliance

Welcome to the AccessiTool Screen Reader Compatibility Checker — your free tool for testing screen reader accessibility against WCAG 2.1 Level AA standards. Whether you're a developer, designer, or business owner, our screen reader tester helps you ensure your website is accessible to people who rely on screen readers like NVDA, JAWS, VoiceOver, and TalkBack.

With our free screen reader compatibility checker, you can instantly scan any website for screen reader-related issues. Just enter a URL above, and our tool will check for ARIA labels, alt text, heading structure, form labels, and more. It's that simple.

What is Screen Reader Accessibility?

Screen reader accessibility ensures that websites and applications are usable by people who are blind or visually impaired. Screen readers like JAWS, NVDA, VoiceOver, and TalkBack convert digital text into synthesized speech or Braille output. For blind or visually impaired users, screen readers are the primary method of accessing websites, applications, and digital content.

If your website isn't compatible with screen readers, you are excluding millions of potential customers. Screen reader compatibility is required by WCAG 2.1 Level AA, ADA Title III, Section 508, EAA, and most other accessibility laws.

How Screen Readers Work

Screen readers work by interpreting a website's code (HTML, ARIA, CSS) and converting it to speech or Braille. They rely on:

• Semantic HTML: Proper tags like <button>, <nav>, <main>
• ARIA attributes: Additional accessibility information for custom widgets
• Alt text: Descriptions for images
• Form labels: Identifies form fields
• Heading structure: Provides page navigation
• Live regions: Announce dynamic content changes

Popular Screen Readers

1. NVDA (NonVisual Desktop Access) — Windows

NVDA screen reader is a free, open-source screen reader for Windows. It's one of the most popular free screen readers and is widely used for accessibility testing. Full NVDA Guide →

2. JAWS (Job Access With Speech) — Windows

JAWS screen reader is a paid screen reader for Windows, widely used in corporate and government settings. It's used by approximately 65% of blind users. Full JAWS Guide →

3. VoiceOver — Apple (macOS, iOS, iPadOS)

VoiceOver screen reader is built into all Apple devices (Mac, iPhone, iPad). For mobile accessibility, testing with VoiceOver is essential. Full VoiceOver Guide →

4. TalkBack — Android

TalkBack screen reader is built into Android devices. For Android accessibility testing, TalkBack is required. Full TalkBack Guide →

5. ChromeVox — ChromeOS / Chrome Browser

ChromeVox screen reader is the built-in screen reader for ChromeOS (Chromebooks). It's also available as a Chrome extension. Full Chrome Extensions Guide →

WCAG Screen Reader Requirements

WCAG 2.1 screen reader compatibility requires meeting these success criteria:

1.1.1 Non-text Content (Level A)

All non-text content (images, charts, icons) must have text alternatives (alt text). Screen reader alt text is essential for blind users to understand visual content.

1.3.1 Info and Relationships (Level A)

Information and relationships implied by visual presentation must be programmatically determinable. This includes proper screen reader heading structure (H1-H6).

2.4.2 Page Titled (Level A)

Web pages must have descriptive titles that screen readers announce when the page loads.

2.4.4 Link Purpose (Level A)

Link purpose must be clear from context. Links like "click here" are not accessible to screen reader users.

2.4.6 Headings and Labels (Level AA)

Headings and labels must be descriptive. Screen reader heading navigation allows users to jump between headings — make them meaningful.

3.3.2 Labels or Instructions (Level A)

Labels must be provided for all form fields. Screen reader form labels are essential for blind users to complete forms.

4.1.2 Name, Role, Value (Level A)

For all user interface components, the name and role must be programmatically determinable. ARIA labels screen reader provides this information.

4.1.3 Status Messages (Level AA — WCAG 2.1)

Status messages must be announced by screen readers without receiving focus. Screen reader live regions (role="status", aria-live="polite") handle dynamic content.

For a complete list of WCAG screen reader requirements, see our full WCAG screen reader guide →

How to Test Screen Reader Compatibility

Step 1: Use Our Free Screen Reader Checker

Enter your URL in the tool above and click "Scan Now". Our screen reader compatibility checker will instantly scan your website for screen reader issues.

Step 2: Manual Testing with Screen Readers

Test your website with actual screen readers:

• NVDA on Windows with Chrome or Firefox — NVDA Guide →
• VoiceOver on Mac with Safari — VoiceOver Guide →
• TalkBack on Android with Chrome — TalkBack Guide →

Step 3: Keyboard Only Testing

Screen reader users navigate exclusively with keyboards. Test your website using only keyboard commands.

Step 4: Check Each WCAG Criterion

Go through the WCAG criteria list above and verify each one is met.

Common Screen Reader Issues & How to Fix Them

1. Missing Alt Text

Issue: Images without alt text are announced as "image" or read the filename.

Fix: Add descriptive alt text to all meaningful images: <img src="chart.jpg" alt="Sales chart showing 20% growth in Q2">

2. Missing Form Labels

Issue: Input fields without labels are announced as "edit" or "blank".

Fix: Use <label> tags with for attribute: <label for="email">Email address</label> <input type="email" id="email">

3. Improper Heading Structure

Issue: Headings are skipped (H1 to H3) or missing entirely.

Fix: Maintain proper hierarchy: H1 → H2 → H3 → H4. Don't skip levels.

4. Missing ARIA Landmarks

Issue: No way for screen reader users to identify page regions.

Fix: Add ARIA landmarks: role="banner", role="navigation", role="main", role="complementary", role="contentinfo"

5. Missing ARIA Labels on Buttons

Issue: Buttons with icons only (no text) are not announced.

Fix: Add aria-label: <button aria-label="Close menu">✕</button>

Screen Reader Testing Checklist

This article is for general informational purposes and isn't legal advice. Screen reader accessibility obligations and enforcement can vary by jurisdiction, so consult qualified legal counsel for guidance specific to your situation.