Social bookmarking sites can bring your site quality backlinks. So, you may submit pages link in the social bookmarking portal. Here is the list of high quality social bookmarking sites for 2020.

www.reddit.com
www.stumbleupon.com
www.tumblr.com
www.fark.com
www.scoop.it
www.slashdot.org
www.bibsonomy.org
www.diigo.com
www.dzone.com
www.folkd.com
www.pudya.com
www.lieel.com
www.xucal.com
www.trendhour.com
www.singlepanda.com
www.genuinepath.com
www.ghurry.com
www.xamly.com
www.xokki.com
www.kisza.com
www.axyza.com
www.aylma.com
www.productdiary.com
www.pursor.com
www.buyxu.com
www.segut.com
www.idyee.com
www.tobucket.com
www.bikre.com
www.technologymagnet.com
www.updatesee.com
www.aixindashi.org
www.bookmark4you.com
www.blokube.com
www.yemle.com
www.addthismark.com
www.sociopost.com
www.socialbookmarknow.info
www.bookmarkinghost.info
www.votetags.info
www.onlinewebmarks.com
www.bookmarktalk.info
www.socialbookmarkzone.info
www.a2zbookmarking.com
www.bookmarkwiki.com
www.newsciti.com
www.bookmarkgroups.com
www.a1bookmarks.com
www.bookmarkfeeds.com
www.bookmarkingbase.com
www.bloggalot.com
www.mettablog.com
www.bookmarksclub.com
www.gadgetfreack.com
www.pinbackbuttonfinder.com
www.androidshaper.com
www.adsandclassifieds.com
www.akonter.com
www.wirefan.com
www.digg.com
www.designfloat.com
www.linkagogo.com
www.yoomark.com
www.list.ly
www.del.icio.us
www.linkroll.com
www.blogengage.com
www.startaid.com
www.pearltrees.com
www.socialbookmarkssite.com
www.theclickcheck.com
www.video-bookmark.com
www.ezyspot.com
www.weboworld.com
www.hotbookmarking.com
www.ewebmarks.com
www.bookmarkgolden.com
www.subbmitt.com
www.boingboing.net
www.activebookmarks.com
www.blogmarks.net
www.openfaves.com
www.cloudytags.com
www.socialwebmarks.com
www.bookmarktou.com
www.livewebmarks.com
www.urlsuggest.com