{
  "id": "F3",
  "rulePrefix": "F3",
  "variant": null,
  "ruleType": "w3c-failure",
  "scanScope": "specimen",
  "synthetic": false,
  "status": "current",
  "title": "Failure of Success Criterion 1.1.1 due to conveying information exclusively using CSS background images",
  "summary": "conveying information exclusively using CSS background images",
  "whyItFails": "This page reproduces the F3 failure pattern so auditors can verify detection against 1.1.1.",
  "principles": [
    "perceivable"
  ],
  "guidelines": [
    "1.1"
  ],
  "successCriteria": [
    {
      "id": "1.1.1",
      "name": "Non-text Content",
      "level": "A",
      "slug": "non-text-content"
    }
  ],
  "versions": [
    "2.0",
    "2.1",
    "2.2"
  ],
  "automatable": "partial",
  "requires": [
    "html",
    "css",
    "media"
  ],
  "isolated": true,
  "pairWith": [],
  "w3c": {
    "understanding": [
      "https://www.w3.org/WAI/WCAG22/Understanding/non-text-content"
    ],
    "quickref": [
      "https://www.w3.org/WAI/WCAG22/quickref/#non-text-content"
    ],
    "technique": "https://www.w3.org/WAI/WCAG22/Techniques/failures/F3"
  },
  "specimen": {
    "html": "<p>Quarterly revenue (information is only in the background image):</p>\n<div class=\"f3-chart\" role=\"img\" aria-label=\"Chart\"></div>",
    "css": ".f3-chart {\n  width: 320px;\n  height: 180px;\n  background: url(/assets/chart.png) no-repeat center / contain;\n}",
    "js": "",
    "assets": [
      "assets/chart.png"
    ]
  },
  "expectedFindings": [
    {
      "sc": "1.1.1",
      "outcome": "fail",
      "note": "Specimen demonstrates failure of 1.1.1."
    }
  ],
  "mustNotFlag": [],
  "manualCheck": "Confirm the specimen demonstrates the documented F3 failure in isolation.",
  "generated": {
    "url": "https://wcagfail.patternd.io/specimens/F3/",
    "lastmod": "2026-10-08"
  }
}