# Duplicate Content

> Substantially similar content appearing at multiple URLs.

Source: https://anotherseoguru.com/en/glossary/duplicate-content

Duplicate content is identical or near-identical content that appears at multiple URLs, either within a single site or across different sites. It can cause crawl waste, dilute rankings, and confuse search engines about which version to rank.

## Example

Product descriptions copied from manufacturers, www vs non-www versions, HTTP vs HTTPS versions, URL parameters creating duplicates.

## How to apply it

Use canonical tags to specify preferred versions, implement proper redirects, set parameter handling in GSC, create unique content, consolidate similar pages.

> **Pro tip:** Duplicate content typically isn't penalized - it's filtered. But it wastes crawl budget and can cause the wrong version to rank. Fix with canonicals.

## Related terms

- [Canonical Tag](https://anotherseoguru.com/en/glossary/canonical-tag)
- [Index Bloat](https://anotherseoguru.com/en/glossary/index-bloat)