1.3 CanonicalisationMediumInferred
Relative (not absolute) canonical
A relative canonical works until something resolves it wrongly, for example on a staging domain or behind a proxy. I use absolute URLs so there is no ambiguity about which page I mean.
What it is
Canonical uses a relative path.
Why it matters
Ambiguity can cause misresolution, especially with parameter/protocol variants.
How to fix it
Use absolute https URLs.
How to find it on your site
- View source and check whether the canonical href is absolute or relative.
- Crawl the site and flag relative canonicals.
- Confirm they resolve to the intended absolute URL.
- Switch them to fully qualified https URLs.
Cross-reference to ranking and citation factors
Absolute canonicals remove the risk of resolving to the wrong host, which would split or misassign signals.
Impact
Low-medium. Inferred from best practice.
Evidence
Use fully-qualified canonical URLs. Google Search Central, Consolidate duplicate URLs (canonicalization)
Sources