Canonical and indexability changes
Not every HTML edit affects search visibility equally. Canonical tags tell crawlers which
URL is preferred when duplicates exist; robots directives such as
noindex change whether a page should appear in indexes at all.
Canonical mismatches
In the changed fixture state, /services.html declares a canonical URL
pointing to /about.html. Comparing baseline and changed crawls should
record that canonical transition without conflating it with an added or removed page.
Indexability transitions
The privacy notice gains a noindex robots meta tag only in v2-changed.
Baseline and restored versions remain indexable so the comparison reports an
indexability change rather than a global site-wide directive.
See change types for the full list of categories this demo exercises.