菜单
This skill should be used when the user asks to "check accessibility", "audit WCAG compliance", "scan HTML for a11y issues", "check color contrast", or "find accessibility violations in web pages".
默认使用会先检查来源的 Prompt；你也可以切换为直接命令，或下载本地副本。
决定是否安装前，请先阅读 SKILL.md，以及 SkillsMP 当前展示的配套文件。
用 Codex 或 Claude 帮你安装 复制这段 Prompt，粘贴到 Codex、Claude 或其他助手里，让它检查 Skill 页面并帮你完成安装。
直接命令不会经过审查 Prompt；运行前请先检查来源。
npx skills add https://github.com/deathrashed/agents --skill a11y-audit命令会保持在同一行。复制前请横向滚动并检查完整内容。
想先保存到本地？可下载 SkillsMP 当前能够提供的文件。
基于 SOC 职业分类
正在显示 SKILL.md
| name | a11y-audit |
| description | This skill should be used when the user asks to "check accessibility", "audit WCAG compliance", "scan HTML for a11y issues", "check color contrast", or "find accessibility violations in web pages". |
| license | MIT + Commons Clause |
| metadata | {"version":"1.0.0","author":"borghei","category":"engineering","domain":"accessibility","updated":"2026-04-02T00:00:00.000Z","tags":["accessibility","a11y","wcag","contrast","html"]} |
Category: Engineering Domain: Web Accessibility
The Accessibility Audit skill provides automated scanning of HTML files for WCAG 2.1 compliance violations and color contrast checking against AA/AAA standards. It catches missing alt text, broken heading hierarchies, unlabeled form inputs, and insufficient color contrast early in development.
# Scan HTML for WCAG violations
python scripts/a11y_scanner.py --file index.html
# Scan a directory of HTML files
python scripts/a11y_scanner.py --dir ./src/templates
# Check color contrast
python scripts/contrast_checker.py --foreground "#333333" --background "#ffffff"
# Parse CSS file for contrast issues
python scripts/contrast_checker.py --css styles.css
# JSON output for CI
python scripts/a11y_scanner.py --file index.html --format json
Scans HTML files for WCAG 2.1 violations including structural, semantic, and interactive element issues.
| Feature | Description |
|---|---|
| Image alt text | Detects missing or empty alt on non-decorative images |
| Heading hierarchy | Validates h1-h6 levels are sequential |
| Form labels | Ensures inputs have associated label elements |
| ARIA attributes | Checks ARIA usage correctness |
| Link text | Flags generic text like "click here" or "read more" |
| Language attribute | Checks for lang on html element |
| Tab order | Detects positive tabindex values |
| Landmarks | Validates semantic landmark usage |
Checks color contrast ratios against WCAG AA and AAA thresholds.
| Feature | Description |
|---|---|
| Ratio calculation | Computes relative luminance contrast ratio |
| AA compliance | 4.5:1 normal text, 3:1 large text |
| AAA compliance | 7:1 normal text, 4.5:1 large text |
| CSS parsing | Extracts color/background pairs from CSS |
| Color suggestions | Recommends nearest compliant color |
# Gate on Level A violations
python scripts/a11y_scanner.py --dir ./templates --format json --level A --strict
# Check CSS contrast
python scripts/contrast_checker.py --css ./static/css/main.css --format json
| Level | Description | Typical Requirement |
|---|---|---|
| A | Minimum baseline | Legal compliance |
| AA | Industry standard | Most regulations, ADA |
| AAA | Enhanced | Best practice goal |
| Context | AA | AAA |
|---|---|---|
| Normal text (<18pt) | 4.5:1 | 7:1 |
| Large text (>=18pt bold or >=14pt) | 3:1 | 4.5:1 |
| UI components | 3:1 | 3:1 |
| Issue | Fix |
|---|---|
| Missing alt text | <img alt="Description of image"> |
| Skipped heading | Use sequential h1 through h6 |
| No form label | <label for="inputId">Label</label> |
| Generic link text | Replace "click here" with descriptive text |
| Missing lang | <html lang="en"> |
| Positive tabindex | Use tabindex="0" or tabindex="-1" only |