WCAG 2.1 / 2.2
WCAG-Focused Checks
Automated evaluation across Web Content Accessibility Guidelines (WCAG 2.1 & 2.2) Level A and AA standards, verifying digital barrier prevention.
wcag-coreActive Audit Rule
Automated WCAG 2.1 & 2.2 Auditing Engine
Make the Web Accessible
to Everyone.
An automated auditing tool that inspects web pages to detect common WCAG accessibility barriers, color contrast deficiencies, and broken ARIA relationships with actionable code remediation guidance.
Automated checks help identify issues but cannot guarantee full WCAG compliance.
Developer-First
Instant scans with exact DOM selectors
WCAG Levels A & AA
Evaluates against universal digital compliance criteria
Actionable Reports
Direct code snippets and remediation instructions
Core Auditing Capabilities
Target critical accessibility barriers early.
A11yCheck is designed around standard automated testing heuristics that catch high-impact digital barriers before production deployments.
Guideline 1.1.1
Missing Image Alternative Text
Flags informative images missing alt attributes, redundant text descriptions, and improper decorative image tags that hinder screen reader users.
alt-textActive Audit Rule
Guideline 1.4.3
Color Contrast Issues
Calculates foreground and background contrast ratios for standard and large text elements against the 4.5:1 and 3.0:1 minimum readability ratios.
color-contrastActive Audit Rule
Guideline 4.1.2
ARIA & Semantic Markup
Validates WAI-ARIA roles, attributes, broken reference IDs, missing landmarks, and heading hierarchy to protect assistive tech navigation.
aria-semanticsActive Audit Rule
Developer Tools
Actionable Violation Reports
Delivers unambiguous findings pinpointing exact CSS selectors, severity ratings, violation impacts, and direct HTML remediation snippets.
actionable-reportsActive Audit Rule
DOM Runtime
DOM Structure & Script Evaluation
Simulated DOM runtime parsing dynamic elements, buttons, form controls, and injected landmarks for accurate single-page application evaluation.
js-spa-renderingActive Audit Rule
Audit Process
How It Works
A straightforward three-step workflow designed to fit smoothly into modern web development and QA cycles.
01
Step 01Enter a website URL
Submit any public HTTP or HTTPS website address into the audit input. The engine verifies URL syntax and domain reachability before initializing the audit.
02
Step 02Run automated accessibility checks
The audit engine parses rendered HTML, computes contrast ratios, and evaluates DOM structure against WCAG 2.1 & 2.2 Level A & AA test suites.
03
Step 03Review violations and suggested fixes
Inspect an interactive breakdown of detected accessibility violations, grouped by severity, with exact CSS selectors and developer remediation snippets.