I have another device, an eInk ebook reader (Onyx Boox), that has this wonderful feature, "auto-crop", that auto-detects the white margins in pdf (with a given degree of "aggression"), and zooms out it.
Sometimes, at night, I prefer to use my notebook to read ebooks. This option would make the experience much better, but so far I can't find this feature in any PDF software I've tried.
How do you read PDFs that "auto-crop" the white margins on a Linux system?
I'm not interested in permanently removing the white space out of PDFs; just hiding it for sake of a reading session.