Canonical URL Checker

When multiple URLs serve the same content, AI engines may split citations across them. A canonical tag tells them which URL to cite — consolidating all authority signals (backlinks, engagement) into one URL that's more likely to appear in AI answers.

Without a canonical tag, AI engines must guess which version of a page is primary. This is especially problematic for sites with URL parameters, trailing slashes, or www/non-www variants. Every page should have a self-referencing canonical at minimum.

Relative canonical URLs (/blog/post instead of https://example.com/blog/post) can cause parsing errors. AI crawlers processing pages at scale may misresolve relative URLs. Always use absolute URLs in canonical tags for maximum compatibility.