HTML Input
Screen Reader Output & PreviewLive
Run analysis to see screen reader output
Screen Reader Preview - Accessibility Testing Tool
Simulate how screen readers interpret your HTML and visualize the accessibility tree
Key Features
Screen Reader Simulation
See what screen readers announce
Accessibility Tree
Visualize semantic structure
ARIA Support
Analyze ARIA labels and descriptions
Export Reports
Download accessibility tree as JSON
What is Screen Reader Preview?
Screen Reader Preview is a tool that simulates how screen readers interpret your HTML code. It builds an accessibility tree and generates the announcements that screen readers would make.
How to Use
- Paste your HTML code into the input area
- Click "Analyze Accessibility"
- Review the screen reader output
- Check the HTML preview to see visual rendering
- Export the accessibility tree for documentation
What Gets Analyzed
Semantic Elements
Headings, landmarks, buttons, links, and form controls
ARIA Attributes
Labels, descriptions, roles, and other ARIA properties
Navigation Structure
Heading hierarchy, landmarks, and navigation order
Content Hierarchy
Text content and how it's organized in the accessibility tree
Frequently Asked Questions
What is a screen reader?
A screen reader is assistive technology that reads web content aloud for visually impaired users.
What is an accessibility tree?
The accessibility tree is a structured representation of how screen readers interpret your HTML.
How do ARIA labels help?
ARIA labels provide additional context that screen readers announce to users.
Can I test with real screen readers?
Yes, this tool simulates output. For real testing, use NVDA, JAWS, or VoiceOver.
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Use ToolRelated guides
Read the how-to, then come back to this tool when you are ready to run it locally.
- A Practical WCAG Checklist You Can Run in the BrowserAccessible names, contrast, and structure checks you can run while you build.
- How Screen Readers Interpret Your HTMLHeadings, labels, and alt text as a screen reader would announce them.
- Best CSS and Frontend Design ToolsColor palettes, CSS animation previews, favicons, patterns, bundle size, and screen-reader checks - all in the browser.