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A data-driven analysis of web accessibility across the top 1 million websites. Research compiled from WebAIM Million 2025, HTTP Archive, and industry reports.
94.8% of the top 1 million homepages have detectable WCAG failures, with an average of 51 accessibility errors per page.
Source: WebAIM Million 2025 analysis of 1,000,000 homepages
This report presents a comprehensive analysis of web accessibility across the internet, drawing from automated scans of the top 1 million websites. The data reveals that the vast majority of websites continue to have significant accessibility barriers. Out of 1,000,000 sites analyzed, 94.8% contained at least one detectable WCAG failure. The most prevalent issue remains low contrast text, affecting 79.1% of all pages tested. Only 7% of sites achieved a score of 80 or above, which is considered a minimum threshold for reasonable accessibility.
Year-over-year data shows a slow but measurable decline in the percentage of sites with errors, from 98.1% in 2020 to 94.8% in 2025. However, the average number of errors per page has fluctuated, changing from 56.8 in 2024 to 51 in 2025, suggesting that efforts to reduce page complexity and improve accessibility may be gaining traction.
1,000,000
Sites Analyzed
Source: WebAIM Million 2025
94.8%
With Detectable Errors
Source: WebAIM Million 2025
51
Avg Errors Per Page
Source: WebAIM Million 2025
7%
Good Score (80+)
Source: HTTP Archive / WebAIM 2025
| Rank | Violation | WCAG | Severity | % of Sites |
|---|---|---|---|---|
| 1 | Missing Skip Navigation | 2.4.1 | moderate | 86.3% |
| 2 | Low Contrast Text | 1.4.3 | serious | 79.1% |
| 3 | Missing Alternative Text | 1.1.1 | critical | 55.5% |
| 4 | Missing Form Labels | 1.3.1 | critical | 48.2% |
| 5 | Empty Links | 2.4.4 | serious | 45.4% |
| 6 | Incorrect Heading Order | 1.3.1 | moderate | 39% |
| 7 | Missing Landmarks | 1.3.1 | moderate | 37.9% |
| 8 | Empty Buttons | 4.1.2 | serious | 29.6% |
| 9 | Duplicate IDs | 4.1.1 | moderate | 20.4% |
| 10 | Missing Document Language | 3.1.1 | serious | 15.8% |
Source: WebAIM Million
Source: HTTP Archive
Source: WebAIM Million / HTTP Archive
Source: WebAIM Million
Source: HTTP Archive / WebAIM
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APA format citation for academic and professional use:
Accessibility.build Research Team. (2026). State of Web Accessibility 2026. Accessibility.build. https://accessibility.build/research/state-of-accessibility
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According to the WebAIM Million 2025 analysis, 94.8% of the top 1 million homepages had detectable WCAG 2 failures. This means only about 5.2% of the most popular websites passed automated accessibility checks without any errors.
Low contrast text is the most common accessibility error, found on 79.1% of homepages analyzed. This violates WCAG Success Criterion 1.4.3 (Contrast Minimum) and makes text difficult or impossible to read for users with low vision or color vision deficiencies.
The average web page has 51 detectable accessibility errors according to the WebAIM Million 2025 study. This number has fluctuated over the years, declining from 60.9 in 2020 to 50.0 in 2023, rising to 56.8 in 2024, then dropping to 51 in 2025.
Travel and e-commerce websites tend to have the worst accessibility scores, with average scores of 34 and 36 respectively, and error rates above 97%. Government and education websites generally perform best, with average scores of 56 and 53, likely due to legal requirements like Section 508.
Web accessibility is showing slow improvement in some metrics. The percentage of sites with errors has declined from 98.1% in 2020 to 94.8% in 2025. However, the average number of errors per page changed from 56.8 in 2024 to 51 in 2025, suggesting that efforts to reduce page complexity and improve accessibility may be gaining traction.
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