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Accessibility Wcag Audit

ASecurity

当需要对 Web/移动端做无障碍(a11y)WCAG 合规审计、定位障碍并给出修复方案时使用;做自动化扫描+键盘/读屏/对比度手动核查、映射到 WCAG 准则并产出违规清单与修复指引;不适用于不涉及无障碍的通用 UI 评审或无法访问页面/设计稿的场景。触发词:无障碍、WCAG、a11y、axe、读屏、对比度

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Added 9/19/2026
ai-agentsreactnodetestinggitfrontend

Works with

cursorcli

Security Analysis

A100/100

Scanned 9/19/2026

$npx -y skills add findscripter/everything-skills --skill accessibility-wcag-audit --agent claude-code

Installs into .claude/skills of the current project.

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SKILL.md
---
name: accessibility-wcag-audit
title: 无障碍 WCAG 合规审计
description: 当需要对 Web/移动端做无障碍(a11y)WCAG 合规审计、定位障碍并给出修复方案时使用;做自动化扫描+键盘/读屏/对比度手动核查、映射到 WCAG 准则并产出违规清单与修复指引;不适用于不涉及无障碍的通用 UI 评审或无法访问页面/设计稿的场景。触发词:无障碍、WCAG、a11y、axe、读屏、对比度
domain: 研发/frontend
triggers: [无障碍审计, WCAG 合规, a11y 测试, axe 扫描, 键盘可访问性, 屏幕阅读器, 色彩对比度, ARIA 修复, 焦点顺序, 无障碍整改]
tags: [accessibility, a11y, wcag, frontend, audit, axe-core, aria, testing]
level: 进阶
status: stable
agents: [claude-code, codex, cursor, gemini-cli]
tools: [axe-core, puppeteer, jest-axe, pa11y, @testing-library/react, GitHub Actions]
requires: []
related: []
combines_with: []
license: MIT
source: sickn33/agentic-awesome-skills
source_license: MIT
---
## 何时使用

适用:
- 对 Web 或移动端体验做 WCAG(默认 AA 级)合规审计。
- 定位无障碍障碍、排出整改优先级。
- 建立持续的无障碍测试实践(CI 卡口、组件级断言)。
- 为干系人准备合规证据(评分、违规报告)。

不该用(负边界):
- 只需通用 UI/视觉评审,不涉及无障碍范围。
- 请求与用户体验或合规无关。
- 无法访问页面、设计稿或内容(无法验证则先停下要权限/输入)。

## 步骤

1. 确认范围:平台、目标 WCAG 级别(A/AA/AAA)、待测页面、关键用户旅程。
2. 自动化扫描:用 axe-core 跑基线,收集违规与覆盖缺口。
3. 人工核查:键盘可达性、屏幕阅读器、焦点顺序、色彩对比度(自动化只能覆盖约 30%-50%,人工不可省)。
4. 映射归因:把每条发现对应到具体 WCAG 准则、严重级别(critical/serious/moderate/minor)与用户影响。
5. 给出修复:逐项整改步骤;修复后回归复测。
6. 产出:无障碍评分、违规报告、测试结果、整改指南、可访问组件示例。

## 指令

- 自动化(axe-core + Puppeteer):扫描时挂上 WCAG 标签 `wcag2a, wcag2aa, wcag21a, wcag21aa`,用 `.exclude('.no-a11y-check')` 排除豁免区域。评分采用加权扣分:`critical=10, serious=5, moderate=2, minor=1`,`score = max(0, 100 - 总权重)`。
- 组件级断言(jest-axe):

```js
import { render } from "@testing-library/react";
import { axe, toHaveNoViolations } from "jest-axe";
expect.extend(toHaveNoViolations);

it("should have no violations", async () => {
  const { container } = render(<MyComponent />);
  expect(await axe(container)).toHaveNoViolations();
});
```

- 对比度阈值(AA):正文 ≥ 4.5:1、大字号 ≥ 3:1;AAA 为 7:1 / 4.5:1。对比度公式 `(L1+0.05)/(L2+0.05)`,相对亮度按 sRGB 线性化(分量 `≤0.03928 ? v/12.92 : ((v+0.055)/1.055)^2.4`,再 `0.2126R+0.7152G+0.0722B`)。颜色不得作为传达信息的唯一手段。
- 键盘核查:所有可交互元素 Tab 可达,Enter/Space 可激活,Esc 关闭弹窗,焦点指示器始终可见,无键盘陷阱,Tab 顺序符合逻辑。非语义可点击元素需补 `tabindex="0"`、`role="button"` 并监听 Enter/Space。
- 读屏核查:页面有唯一 `h1`,标题层级不跳级;图片有 `alt`(装饰图 `alt=""`);表单字段有 `<label for>` 或 `aria-label`;错误用 `role="alert" aria-live="polite"` 播报。
- 常用 ARIA 模式:对话框 `role="dialog" aria-modal="true" aria-labelledby`;标签页 `role="tablist/tab/tabpanel" + aria-selected/aria-controls`;动态区 `aria-live`。
- CI 卡口(pa11y):`npx pa11y http://localhost:3000 --standard WCAG2AA --threshold 0`。

## 示例

CI 集成(GitHub Actions 关键步骤):

```yaml
name: Accessibility Tests
on: [push, pull_request]
jobs:
  a11y-tests:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
      - uses: actions/setup-node@v3
        with: { node-version: "18" }
      - run: npm ci && npm run build
      - run: npm start & npx wait-on http://localhost:3000
      - run: npm run test:a11y
      - run: npx pa11y http://localhost:3000 --standard WCAG2AA --threshold 0
```

常见整改片段:

```js
// 补缺失 alt(装饰图置空)
document.querySelectorAll("img:not([alt])").forEach((img) => {
  const decorative = img.role === "presentation" || img.closest('[role="presentation"]');
  img.setAttribute("alt", decorative ? "" : img.title || "Image");
});
// 用 placeholder 兜底补 aria-label
document.querySelectorAll("input:not([aria-label]):not([id])").forEach((i) => {
  if (i.placeholder) i.setAttribute("aria-label", i.placeholder);
});
```

## 注意事项

- 自动化不能替代人工:键盘、读屏、认知(清晰提示、无强制时限、操作可撤销)必须人工走查。
- 文本放大到 200% 不丢内容,内容在 320px 宽下可重排,动画可暂停。
- `prefers-contrast: high` 媒体查询下提供高对比主题(链接加下划线、控件加可见边框)。
- 输出不可替代环境特定的验证与专家复核;缺少必需输入/权限/成功标准时先停下澄清。

## 互见

- 性能与渲染审计可结合 Lighthouse / Chrome DevTools 的无障碍评分。
- 设计阶段的对比度与组件规范应前置到设计系统/组件库评审。

---
采编自 sickn33/antigravity-awesome-skills(MIT),原技能 `accessibility-compliance-accessibility-audit`,已适配重写。

Attribution

findscripterfindscripter
View sourceSee grades on GitHubMore from findscripter →
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