How can add power point presentation ver 2020.1 please help me 
Автор: M. ÖZKAN
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how can add pptx my page?
i use old verison and add ppt i remember
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There is an optional (free) ppt object, I do not know if it supports pptx, but your powerpoint software can save/export as ppt
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no not working i found ony if you put your pptx file onedrive and later share and copy html code and after possible
like this
http://www.ugurozkan.info/dostluk.html