Blazor WASM developer finds 4 SEO drift issues in static HTML mirrors via grep audit

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A developer running a Blazor WebAssembly tax calculator site discovered four categories of SEO-degrading inconsistencies after auditing 100 hand-maintained static HTML mirror files over a weekend. These mirrors exist to serve content to search crawlers and users before the WASM app hydrates, but they must be updated manually whenever the source Razor files change. Over six months and roughly 40 pages, silent drift accumulated undetected because the dotnet compiler does not validate static HTML files. The audit revealed missing BreadcrumbList JSON-LD on seven blog pages, absent FAQ schema on six pages, incomplete Article structured data on two pages, and duplicate meta keyword content on five pages. Applying fixes across 13 files using a Node script restored eligibility for Google rich results, including breadcrumb and FAQ SERP features, on multiple pages.

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