SEO headers changed
What this page tests
Check SEO response headers (headers.seo_change), alert headers.seo_change.
X-Robots-Tag or Link canonical/hreflang headers changed across monitored pages. Those headers can change indexability or which URL Google treats as canonical / language alternate.
Why it matters
X-Robots-Tag or Link canonical/hreflang headers changed across monitored pages. Those headers can change indexability or which URL Google treats as canonical / language alternate.
How the fail is produced
Sends a Link header with rel=canonical pointing at a non-self URL.
This page is part of the TechDash Test Site used to exercise the TechDash desktop app. Each fixture isolates a single check so you can add one path at a time and see a clear pass or fail. Search engines and users rely on stable HTTP responses, index signals, metadata, and site files. When those signals drift, organic visibility, crawl efficiency, and measurement can all suffer. Keep the homepage as the healthy control origin, then monitor the specific path you want to fail. Substantial body copy is included so thin-content and soft-404 heuristics do not fire unless that is the intended test.