Is this a perfect replica of NVDA or VoiceOver?

No, this is a semantic simulation. It approximates the reading order and spoken output based on HTML semantics, but actual screen reader behavior may vary slightly depending on user settings and browser combinations.

Can it analyze dynamic content loaded via JavaScript?

The tool analyzes the HTML provided. If you use the URL input, dynamic client-side state that appears only after scripts run might not be captured. For dynamic states, paste the fully rendered HTML directly into the input.

What does the Screen Reader Preset option do?

The preset changes the phrasing style of the output to match the typical announcement patterns of NVDA, JAWS, or VoiceOver. The underlying semantic analysis and issue detection remain the same.

Why is my heading hierarchy flagged as an error?

Screen reader users rely on headings to navigate a page. The tool flags skipped levels (e.g., jumping from H1 directly to H3) because it breaks the logical document outline and makes navigation confusing.

How do I fix unlabeled buttons in the report?

If you enable 'Show Fix Suggestions', the tool will provide specific guidance. Typically, you need to add visible text inside the button, an aria-label, or an aria-labelledby attribute.

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Screen Reader Simulation Tester

Simulate the reading order and spoken semantics a screen reader may expose from a URL or raw HTML, then flag likely accessibility gaps

Details

What this tool helps you do

Paste raw HTML or provide a live URL. The tool extracts a likely screen-reader reading order, then shows what blind users may hear first: page title, landmarks, headings, links, buttons, form labels, images, and list items.

How to use it:

HTML Input: paste raw markup when you want deterministic analysis
Page URL: optional live page URL to fetch and inspect
Screen Reader Preset: changes the phrasing style only; the semantic analysis stays the same
Include Landmark Summary: adds navigation/main/footer landmark summaries
Show Fix Suggestions: includes repair guidance beside each issue

What the report highlights:

Likely spoken order in document flow
Heading hierarchy and skipped levels
Missing aria-label or form-label coverage
Missing or empty image alt text
Unlabeled links and buttons

Notes:

This is a semantic simulation, not a pixel-perfect reproduction of NVDA, JAWS, or VoiceOver
Dynamic client-side state that only appears after scripts run may not be visible unless the HTML already contains it

Execution

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Samples

Screen Reader Simulation Tester

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Key facts

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Use cases

Examples

1. Auditing a Marketing Signup Page

2. Checking Heading Hierarchy on a Live Article

FAQ

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