Duplicates arise from URL parameters, HTTP and HTTPS or www and non-www versions, printer pages, faceted navigation and copied product descriptions.
Search engines pick one version to index, which may not be the one you want.
Duplicates split signals between URLs, waste crawl budget and can leave the wrong page ranking.
VisibilityKit Crawler flags duplicate titles, descriptions and content across your site, alongside canonical tags, so you can consolidate with canonicals or redirects.
Not usually. The cost is diluted signals and the wrong URL being chosen, not a penalty.
Choose a preferred URL and use a canonical tag or a 301 redirect for the others.
An HTML link element that tells search engines which URL is the preferred version of a page.
Pages with little useful content, such as near-empty templates, doorway pages or boilerplate-only pages.
How many URLs a search engine is willing and able to crawl on your site in a given period.
A 301 redirect signals a permanent move; a 302 signals a temporary one.
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