Anyone spending a lot of time on pdf's should definitely checkout emacs pdf-tools mode https://github.com/politza/pdf-tools https://github.com/politza/pdf-tools

Anyone spending a lot of time on pdf's should definitely checkout emacs pdf-tools mode https://github.com/politza/pdf-tools https://github.com/politza/pdf-tools . In the past i was recommending polar app, but emacs pdf-tools trumps in comparison. Emacs pdf-tools mode has lesser memory footprint is much faster and above all does not have restrict any features.