Choose the rotation
Select the PDF, then NativeActions → PDF → Rotate pages. Choose the relevant pages and a 90°, 180° or 270° rotation. Inspect the new PDF afterward.
Check the direction
A 90° rotation and a 270° rotation go in opposite directions. Verify the result, especially if the document mixes portrait and landscape pages.
Know the scope
Rotation changes page orientation. It is not OCR or a layout redesign. A scan that is slightly skewed rather than exactly sideways may still need a different correction tool.
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