Duplicate content
Duplicate content is the same or near-identical text appearing at more than one URL. It leaves search engines unsure which version to show and can split the ranking signals that should be flowing to a single page.
Last updated: June 9, 2026
Most duplicate content is accidental, not deceptive. It happens when the same page is reachable through several URLs, when printer-friendly or paginated versions exist, or when product descriptions are copied across many listings. Despite a persistent myth, there's no "duplicate content penalty" for the everyday kind. What actually happens is messier: Google picks one version to rank and ignores the rest, and it may not pick the one you wanted.
Stores run into two common flavors. The technical kind comes from URL variations, the same product surfacing under multiple collections, or filter parameters, and is best handled with canonical tags pointing to the preferred URL. The content kind comes from using the manufacturer's stock description that hundreds of other retailers also publish, which gives you nothing distinctive to rank with. Writing your own product copy, even a few honest original sentences, sets your listings apart.
Rewriting descriptions for a large catalog by hand is a slog, which is part of why so many stores leave the generic text in place. Seokai can generate unique product descriptions at scale, so each listing stands on its own instead of echoing every competitor's.
Related terms
Alt text
Alt text is a short written description of an image, added in the HTML, that screen readers read aloud to people who can't see the image and that search engines use to understand what the picture shows.
Backlink
A backlink is a link from another website that points to a page on yours. Search engines read backlinks from trusted sites as a signal that your content is credible, which can lift your rankings.
Canonical URL
A canonical URL is the version of a page you tell search engines to treat as the main one when the same or similar content can be reached through several different URLs. It points them to the copy you want indexed and ranked.
Core Web Vitals
Core Web Vitals are three Google metrics that measure how a page actually feels to use: how fast the main content loads, how quickly the page responds when you interact with it, and how much the layout jumps around while loading.
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