GLOSSARY
Duplicate Content
IN ONE SENTENCE
Duplicate content is one piece of content living at several URLs with no consolidation to a preferred address.
Duplicate content is one piece of content living at several URLs with no consolidation to a preferred address.
01
In detail
On multilingual, multi-source sites the usual cause is a change to how slugs are generated: addresses from both rules still resolve, each canonicalising to itself. The fix is an old-to-new redirect map and a sitemap that only declares the new set.
Updated 2026-08-06