PDF/PPT Submission is an Off-Page SEO technique. PDF submission means to promote your content as PDF format.
Similar to PDF, can also submit PPT (PowerPoint presentation) and DOC file (document file) and promote your Content in different PDF/PPT websites.
Top PPT ,DOC ,PDF Submission Sites 2021
https://www.slideshare.net/
https://www.dropbox.com
https://issuu.com/
http://www.scribd.com/
https://app.box.com/
https://www.4shared.com/
https://animoto.com/
https://www.brainshark.com/
http://www.authorstream.com
https://www.clearslide.com/
http://www.filedropper.com/
http://www.docdroid.net/
http://www.slideboom.com
https://www.edocr.com/
https://www.2shared.com/
http://slideroll.com/
http://www.slideserve.com
http://www.powershow.com
http://www.slidesnack.com/
http://slideplayer.com/
http://noteandpoint.com/
http://www.templateswise.com/
http://www.zentation.com/
http://www.vcasmo.com/
https://slidepresenter.com/
http://host-a.net/
http://www.slideworld.com
http://www.filesave.me/
http://www.masiup.com/
http://www.slidebank.com/
http://presentationfx.com/
http://pdfsr.com/
https://www.scribd.com/
https://issuu.com/
https://www.slideshare.net/
https://www.edocr.com/
https://www.slideserve.com/
http://www.authorstream.com
http://www.slideshare.net/
http://www.slideserve.com
http://www.slidepoint.net/
https://www.slideboom.com/
http://www.authorstream.com/
http://slidepoint.net/
https://www.snacktools.com/en
/http://www.scribd.com/
/http://www.scribd.com/
http://issuu.com/
http://www.mediafire.com/
http://www.edocr.com/
http://www.4shared.com/
https://www.zoho.com/
https://app.box.com/
http://data.axmag.com/
https://drive.google.com/
http://share.snacktools.com
http://www.pearltrees.com/
https://www.dropbox.com/
http://res.cloudinary.com/
http://www.4sync.com/
https://www.opendrive.com/
https://www.slideshare.net
Find here the high DA PA SEO submission site here.