Change PDF from landscape to portrait tool allows resizing PDF page basis of page layout and page dimension. You can change numerous page size settings like paper size, relative size, custom size and page orientation. Using pager size option you can select multiple choice like A0, A1, A2, B0, B1, RA0, RA1, RA2, quarto, folio, crown, letter, legal, elephant, royal, medium etc. Page orientation supports two options such as portrait and landscape.