Research

Accessibility research from real scan data

Certvo scans thousands of live websites. We publish what that data shows, as open datasets and plain-language reports, so that teams, journalists and researchers can cite measured figures rather than estimates. No individual website is ever identified.

Report

Certvo Web Accessibility Report 2026

Only 18.8% of the 1,564 websites scanned passed every automated WCAG 2.1 AA check.

Read Table

WCAG 2.1 failure rates by success criterion

Every machine-testable criterion ranked by the share of 1,564 websites that fail it, linked to fixes.

Read Method

Methodology

Scanner, sample origin, deduplication and exclusion rules, definitions, limitations and privacy.

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Open dataset (CC BY 4.0)

1,564 websites · 4,549 pages · 108,494 issues · AA pass rate 18.8% · generated 2026-09-06

Full dataset (JSON)
Failure rate per WCAG criterion (CSV)
Share of sites per axe-core rule (CSV)

Cite as: Source: Certvo Web Accessibility Report 2026, automated scan of 1,564 websites (2026-03-16 to 2026-09-06). https://certvo.com/research/web-accessibility-report-2026