I use a tablet to read several pdfs. Because of additional margins , the actual text on each page gets rather small. I would like to remove all whitespace before any actual content. This can mean that I will have unequal page sizes, which I am fine with.
Most tools allow you to crop based on a rectangle. I want something that can go page wise and remove white spaces around content as needed (thus, if there is just a little bit of content at the centre, it will be much bigger.
Is there any tool like that ?