Axe Accessibility Tester

Automatically audit any website for WCAG accessibility compliance using the industry-standard axe-core engine. Identify barriers that prevent users with disabilities from accessing your content.

What it does

• Scans single pages or crawls entire websites
• Tests against WCAG 2.0, 2.1, and 2.2 standards (A, AA, AAA levels)
• Reports violations with severity ratings (critical, serious, moderate, minor)
• Provides specific remediation guidance for each issue
• Pinpoints exact HTML elements causing failures

Use cases

• QA teams: Catch accessibility regressions before deployment
• Agencies: Audit client websites for ADA/Section 508 compliance
• Developers: Integrate accessibility checks into CI/CD pipelines
• Consultants: Generate detailed reports for accessibility remediation projects

Input

Field	Type	Description	Default
urls	array	URLs to test for accessibility	Required
crawl	boolean	Crawl and test linked pages	false
maxPages	number	Maximum pages to test when crawling	10
wcagLevel	string	WCAG conformance level to test	wcag21aa
includeWarnings	boolean	Include items needing manual review	true
includePasses	boolean	Include passed checks in output	false

Output

Each result includes:

• url: The tested page URL
• violationsCount: Total number of violations found
• warningsCount: Items requiring manual review
• passesCount: Number of passed checks
• severityCounts: Breakdown by critical, serious, moderate, minor
• violations: Detailed list with affected elements, selectors, and fix guidance

Example output

{
  "url": "https://github.com/",
  "wcagLevel": "wcag21aa",
  "testedAt": "2025-12-08T00:10:00.000Z",
  "violationsCount": 2,
  "warningsCount": 5,
  "passesCount": 42,
  "severityCounts": {
    "critical": 0,
    "serious": 1,
    "moderate": 1,
    "minor": 0
  },
  "violations": [
    {
      "id": "color-contrast",
      "impact": "serious",
      "description": "Elements must meet minimum color contrast ratio thresholds",
      "help": "Elements must have sufficient color contrast",
      "helpUrl": "https://dequeuniversity.com/rules/axe/4.10/color-contrast",
      "nodes": [
        {
          "html": "<span class=\"text-muted\">Sign up</span>",
          "target": [".signup-btn > span"],
          "failureSummary": "Fix any of the following: Element has insufficient color contrast of 3.5:1 (foreground: #8b949e, background: #ffffff). Expected contrast ratio of 4.5:1"
        }
      ]
    }
  ]
}

Why axe-core?

axe-core is trusted by Microsoft, Google, and government agencies. It powers accessibility testing in Chrome DevTools and catches issues that other tools miss—with zero false positives guaranteed.