Accessibility
WCAG 2.1 checks
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Web Accessibility Advanced Test (axe-core based)
Automatically checks website accessibility based on WCAG 2.1 standards.
• International standard compliance check using axe-core CLI
• Verification against WCAG 2.1 Level A and AA rules and best practices
• Four severity levels: Critical, Serious, Moderate, Minor
• Keyboard navigation, screen reader compatibility, ARIA attribute validation
• Color contrast, alternative text, labeling verification
• Landmark, heading structure, and focus management analysis
Test Duration: Approx. 30 seconds to 2 minutes
Testing Tool: axe-core CLI (Deque Systems)
Test Method: The page is rendered with a Puppeteer-based headless browser, then accessibility rules are validated using the axe-core engine.
Testing Objectives:
This test evaluates whether all users, including people with disabilities and elderly users, can equally access and use the website. Web accessibility is not only a legal requirement but also an important quality indicator that helps serve more users and improve SEO.
• International standard compliance check using axe-core CLI
• Verification against WCAG 2.1 Level A and AA rules and best practices
• Four severity levels: Critical, Serious, Moderate, Minor
• Keyboard navigation, screen reader compatibility, ARIA attribute validation
• Color contrast, alternative text, labeling verification
• Landmark, heading structure, and focus management analysis
Test Duration: Approx. 30 seconds to 2 minutes
Testing Tool: axe-core CLI (Deque Systems)
Test Method: The page is rendered with a Puppeteer-based headless browser, then accessibility rules are validated using the axe-core engine.
Testing Objectives:
This test evaluates whether all users, including people with disabilities and elderly users, can equally access and use the website. Web accessibility is not only a legal requirement but also an important quality indicator that helps serve more users and improve SEO.
| Grade | Score | Criteria |
|---|---|---|
| A+ | 90~100 |
Critical: 0 Serious: 0 Total violations: 3 or fewer Keyboard/ARIA/Alt-text/Contrast all valid |
| A | 80~89 |
Critical: 0 Serious: 3 or fewer Total violations: 8 or fewer Majority of Landmarks/Labels valid |
| B | 70~79 |
Critical: up to 1 Serious: up to 6 Total violations: 15 or fewer Some contrast/label improvements needed |
| C | 60~69 |
Critical: up to 3 Serious: up to 10 Total violations: 25 or fewer Focus/ARIA structure improvements needed |
| D | 50~59 |
Critical: up to 6 OR Serious: up to 18 Total violations: 40 or fewer Multiple keyboard traps/label omissions |
| F | 0~49 |
Exceeds above criteria Multiple Critical/Serious issues Severe accessibility barriers for screen reader/keyboard use |
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