Sometimes when you open a PDF, the pages are rotated so that you can't properly read them. If you are using Adobe Acrobat, the software used to create and edit PDF documents, you can rotate in intervals of 90 degrees the pages in an entire document or just a selection of pages. The page orientation will remain changed when you next open the PDF. You may also temporarily rotate the view of a PDF in either Acrobat or the free PDF reader, Adobe Reader.
Open a PDF file in Adobe Acrobat.
Click the "Document" menu, then "Rotate Pages."
Choose the direction you want the pages to be rotated--"Counterclockwise 90 degrees," Clockwise 90 degrees" or "180 degrees."
Choose whether you want to rotate all the pages in the document or specify a range of pages.
Click the "File" menu, then "Save as" to save the changes.
Change Page View
Open a PDF file in Adobe Acrobat or Adobe Reader.
Click the "View" menu, then select "Rotate View."
Select "Clockwise" or "Counterclockwise." This will change the page orientation, but it will go back to the original view when you reopen the document.