Use these high Page Authority and Domain Authority sites to share your PPT worldwide. By sharing your PPT as PDf and Video format you can get more traffic towards your website. It will also improve your website visibility on SERP.

Off- Page SEO Techniques

http://www.slideshare.net/

https://issuu.com/

http://www.authorstream.com/

https://www.scribd.com/

http://www.slideserve.com/

https://present.me

http://www.4shared.com/

https://www.box.com/

www.mediafire.com/

http://www.powershow.com/

https://docs.zoho.com/

https://slides.com/

http://www.slidesnack.com/