Types of Duplicate Content

a. Technical Internal Duplicate Content

The Same Content Available at multiple URLS or your website

Example 1:

Duplicated home page at index.html / htm or index.php pages
https://example.com/index.html or https://example.com/index.php or https://example.com/home

Example 2:

Session ID parameters

https://example.com/services or https://example.com/services?sessionID=1246 and more

b.Hosting Related Duplicate Content

Duplicate content caused by mis-configured server settings

Example 1: No HTTP to https redirection.

http://www.example.com/ and https://example.com/

Example 2: Site available at www and non-www.

https://www.example.com/ and https://example.com/

Example 3: Indexed staging site and development sites

https://www.example.com/dev/ and https://www.example.com/

C. 3rd Party External Duplication Content

Copies or very similar versions of your content or external domains owned by 3rd parties

Example 1: Site that manually copies your work and republishes it as their own.

Example 2: Sites that create a slight rewrite of your work and publish it as their own.

D. Own External Duplicate Content

Your Content duplicated on or by other domains and subdomains you control

Example 1: Separate mobile (m dot) website without the canonical header or rel alternate declaration in the main site header.

https://www.m.example.com/ and https://www.example.com/

Example 2: International domains, subdomains or subfolders misconfigured without href=”lang” or not translated into the local language.

https://example.com/in/services/ and

https://example.com/ca/services/ or

https://india.example.com/services/ and

https://canada.example.com/ca/services/
https://canada.example.com/ca/services/

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