Split scanned document pages in two

[davide445]

I received the scan in PDF format (not OCRed, just images) of an old and not more printed book from an university researcher, that is using it as introduction to a topic we need to discuss about.

I think the original format it's something less than landscape A4 (not a printing expert at all, so can't really judge), and next an example

It's really unease to read on a laptop, needing constantly to shift back and fort between the left and right page.

Asking if there is a way to automatically split every page on the same vertical line, and rearrange the pages as a sequence of single A4 portrait one.

[lacerto]

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