Some online PDF editors (like Sejda) have the feature of viewing all selected pages for cropping in an overlapping view. That way you can be sure of not inadvertently deleting text while cropping the maximum you want.

It would also be better if the view was larger, like full screen or adjustable, so you can be precise during cropping.

This request has a relation with "turn pages in crop dialogue" by @Hossein, but I think Sejda's feature is a better option.