Canonical Tag
A link element that tells search engines which URL is the preferred version of duplicate or near-duplicate pages.
Open related toolThe SEO glossary, in plain language.
Definitions, examples and the tool that helps you act on each term. Search to jump straight to what you need.
301 Redirect
A permanent server redirect that passes users and ranking signals from an old URL to its replacement.
Open related tool404 Error
A response code returned when a requested URL does not exist on the server.
Open related toolRobots.txt
A root-level file that tells crawlers which paths they may or may not request from your site.
Open related toolCrawl Budget
The number of URLs a search engine is willing and able to crawl on your site in a given period.
Open related toolIndexability
Whether a crawled page is eligible to be stored and served in search results.
Open related toolCumulative Layout Shift
A Core Web Vital measuring unexpected movement of page content during loading.
Open related toolInteraction to Next Paint
A Core Web Vital measuring how quickly a page visibly responds to user interactions.
Open related toolLargest Contentful Paint
A Core Web Vital measuring when the largest visible element finishes rendering.
Open related toolSchema Markup
Structured vocabulary that describes page content so search engines can understand and enrich it.
Open related toolJSON-LD
The script-based format Google recommends for adding structured data to a page.
Open related toolMeta Robots
A page-level directive controlling indexing and link following for that specific URL.
Open related toolEntity SEO
Optimising around things and their relationships rather than isolated keyword strings.
Open related toolTopical Authority
The depth and consistency of coverage that makes a site a credible source on a subject.
Open related toolSemantic SEO
Structuring content around meaning and intent so engines can match it to real questions.
Open related toolHreflang
Annotations that tell search engines which language and regional version of a page to serve.
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