Only extension I use with Safari and Chrome is Adblock. When browsing, I don't feel any need for additional features that are not offered by browser and OS. As

Only extension I use with Safari and Chrome is Adblock. When browsing, I don't feel any need for additional features that are not offered by browser and OS. As my ecosystem is Mac/iOS, I use Add to Reading List in Safari to save articles that I may read/refer later. One Feature I really like in Safari is Reader which removes extraneous stuff on a page and makes it easy to share/email/read/print the main content.