This doesn't apply to web pages, but Mendeley is excellent for research papers [1]. It let's you easily build up a collection of papers, store highlights/notes,

This doesn't apply to web pages, but Mendeley is excellent for research papers [1]. It let's you easily build up a collection of papers, store highlights/notes, and export Latex bibliographies. I couldn't recommend it more. [1] - https://www.mendeley.com/ https://www.mendeley.com/