The Multilingual Quality Divide: SEO, Trust, and Accessibility Across 17 Languages and 3.4 Million Websites
We cross-referenced 3.1 million classified URLs across 17 content languages against SEO, AEO, EEAT, WCAG accessibility, readability, privacy, and sentiment grades. Dutch sites carry the strongest trust signals — ahead of English. Vietnamese sites have the best SEO. Japanese builds the most accessible web. And cross-language readability scores are a measurement artifact, not a ranking. Here's the data, refreshed against an index that has more than doubled.