Spectra™ Rule Engine | BrowserStack

Get AI-driven, automated issue detection & remediation with Spectra™

Use our advanced AI-driven rule engine to automatically detect, validate and fix issues — like a WCAG expert. Catch up to 2X more critical problems across 40+ WCAG Success Criteria, including Reflow, Non-text Contrast and Focus Visible

40+ WCAG criteria supported

Auto-detect 70% of real-world issues. Reduce manual work. No expertise needed.

A11y Issue detection AI agent

Auto-detect complex issues with human-like intelligence and contextual judgment embedded in rule engine

A11y Issue Remediation AI agent

Confidently fix 50% of accessibility issues like a WCAG expert with code snippets and contextual guidance

We cover more, we do it better

Auto-detect 90% of real-world issues including 9/10 most violated WCAG criteria. Fix 50% of detected issues like a WCAG expert with AI remediation guidance and code-snippets.

Best-in-class automated WCAG issue detection

Explore examples of our ever-expanding static rules that detect critical issues for 40+ criteria

Check if your focus indicators are visible

Ensure keyboard-focused elements are visually distinct. Our AI verifies that focus states use clear borders to assist users with visual impairments or color blindness

[Learn more](/content/docs/accessibility/rules/a11y-engine/5.11/keyboard-focus-visible "Learn more"/index.html)

Improve readability for non-text elements

Ensure buttons, checkboxes, and radio buttons meet required contrast ratios. This rule ensures non-text elements stand out, making content perceivable for all users

[Learn more](/content/docs/accessibility/rules/a11y-engine/5.11/non-text-control-contrast "Learn more"/index.html)

Ensure your web content can reflow

Deliver a fully accessible experience at 400% zoom with only one-dimensional scrolling. This ensures content remains functional and readable for users with low vision to navigate

[Learn more](/content/docs/accessibility/rules/a11y-engine/5.11/reflow-4x-zoom-scroll "Learn more"/index.html)

Get AI-driven, in-depth complex issue detection

Baked into Spectra, A11y Issue detection agent can detect issues with human-like intelligence including the examples below

Accurately auto-detect color contrast issues

Ensure high readability for low-vision users by detecting and fixing contrast issues in small and large text with 90% greater accuracy, even within complex CSS configurations

[Learn more](/content/docs/accessibility/rules/a11y-engine/5.11/color-contrast "Learn more"/index.html)

Detect functional images missing alt-text

AI identifies functional vs. decorative images, evaluates context to find inaccurate alt-text, and suggests meaningful alternatives

[Learn more](/content/docs/accessibility/rules/a11y-engine/5.11/decorative-image "Learn more"/index.html)

Headings follow visual hierarchy & structure

AI-powered rules scan your webpages and understand its context. It flags missing or mis-used headings — so everyone including screen-reader users can easily navigate a website.

[Learn more](/content/docs/accessibility/rules/assisted-test/incorrect-heading-level "Learn more"/index.html)

Get contextual guidance & code-snippets

A11y Issue Remediation agent is built-into Spectra™. Here are some examples of WCAG expert-level fixes it automatically generates with human-like intelligence

Resolve link color WCAG violations

AI detects links that rely solely on color for distinction and recommend compliant color palettes to ensure they are clearly identifiable to all users.

[Learn more](/content/docs/accessibility/rules/a11y-engine/5.10/distinguishable-link/ "Learn more"/index.html)

Fix missing roles for interactive elements

Auto-detect undeclared interactive elements missing critical attributes. Get suggestions for correct accessible names and widget roles to ensure functionality with AI.

[Learn more](/content/docs/accessibility/rules/a11y-engine/5.10/keyboard-interactive/ "Learn more"/index.html)

Correct inappropriate alt-text for images

For functional images with poor or missing alt-text, get ready-to-use AI-driven suggestions for meaningful, context-aware alt-text alternatives.

[Learn more](/content/docs/accessibility/rules/a11y-engine/5.11/meaningful-alt-text-ai "Learn more"/index.html)

Find and fix issues like a WCAG expert with Spectra™

Save time, reduce costs, and achieve compliance with the best-in-class Spectra™ rule engine!

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