← GlossarySEO
Canonical Tag
Also known as · rel=canonical
An HTML link element that tells search engines which URL is the primary version of duplicate or similar content.The canonical tag (<link rel="canonical" href="..." />) signals to search engines which URL should be treated as the primary version when multiple URLs serve similar content. Common uses: consolidating tracking-parameter variants, declaring the print-friendly version subordinate to the main, handling pagination. Missing or misconfigured canonicals cause duplicate-content issues and split ranking signals.
Related terms
Other seo terms.
Google Business Profile
Google's free local business listing that powers Maps + the local pack.
Schema Markup
Standardized JSON-LD data that helps search engines understand page content.
Core Web Vitals
Google's three user-experience metrics: LCP, INP, CLS.
LCP
Time until the largest visible element finishes rendering. Target: under 2.5s.
INP
Latency between a user input and the next visual response. Target: under 200ms.
CLS
Aggregate measure of unexpected layout movement during page load. Target: under 0.1.
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