Try these best free software and online tools that let you rotate PDF pages by 90 degrees, 180 degrees, or 270 degrees.

How to Rotate the Text on a PDF File. If a client emailed you a PDF with a combination of pages in portrait and landscape mode, some pages may display at a 90-degree angle.

Then click the "Rotate PDF" button to complete the rotation and save the PDF in the usual way to complete the process.