Bank statements are made for reading, not for calculating. Their tables usually have no grid lines, amounts are aligned to the right and long descriptions wrap onto a second line, which is why copy and paste turns them into a mess.
This converter rebuilds the columns from the layout of the page, joins wrapped descriptions back to their transaction and merges all pages into one table, keeping the column headers only once. In the Excel version, amounts written as 1,250.00, 1 250,00 or (85.00) become real numbers, so you can add, filter and build pivot tables right away.