What is an Absolute Link? - Accuranker
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A link can be absolute or relative. An absolute link shows the full URL of the page being linked, whereas a relative link only shows the part after the domain.
Example of an absolute link: http://example.com/folder/filename.html
Example of a relative link: ../folder/filename.html
Whilst both versions of the link will work, due to potential issues with canonicalisation, it’s generally best to use absolute links rather than relative links where possible.