Hi Guys,
I have one important question and need prompt and detailed answered please.How many seo friendly extensions are there? What are these? PLEASE help me friends.

Thanks in advance.






I didn't find the right solution from the internet.
References:
https://www.daniweb.com/digital-media/digital-marketing/search-engine-strategies/threads/509159/how-many-seo-friendly-extensions-are-there-what-are-these


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