A PDF can be difficult to read when one or more pages are sideways or upside down. This often happens with scanned documents, pages added from another file, or PDFs created from mixed page orientations.
You can fix the problem by rotating only the pages that need it and then saving the updated PDF.
Use Adobe Acrobat online if you want to rotate pages in a browser, or use Preview on Mac for an offline option. Select only the pages that are facing the wrong direction, rotate them left or right, and save the updated file.
When Should You Rotate PDF Pages?
Rotating pages is useful when the document itself is correct but the page orientation makes it difficult to read.
Method 1: Rotate PDF Pages Online With Adobe Acrobat
Adobe Acrobat on the web lets you select individual page thumbnails or multiple pages and rotate them left or right.
Check the page thumbnails before rotating anything. This makes it easier to select only the pages that are facing the wrong direction.
Method 2: Rotate PDF Pages on Mac With Preview
Preview on Mac can rotate one page or several selected pages at the same time.
2. Choose View, then Thumbnails if the page thumbnails are not visible.
3. Select the page or pages you want to rotate.
4. Click the Rotate Left button.
5. To rotate right, hold the Option key while using the rotate control.
6. Save the PDF after the pages are facing the correct direction.
Rotate One Page or Several Pages?
Rotating the Page vs Rotating the View
These two actions are not always the same. Rotating the page changes the saved page orientation, while rotating only the view may change how the page looks temporarily on your screen.
If you need the page to stay rotated when the PDF is opened again or sent to someone else, use a page rotation tool and save the document instead of changing only the temporary viewing direction.
Check the PDF After Rotating Pages
Open the saved PDF again before you send or archive it. This confirms that the changes were saved correctly.
Why Does My PDF Return to the Old Orientation?
If the page looks correct while you are viewing it but returns to its previous orientation after reopening the file, you may have rotated only the view instead of the actual page.
Use the page organization or page rotation controls, then save the PDF before closing it.
Need to Rearrange the Pages Too?
If the page order is also incorrect, see How to Merge PDF Files Into One PDF or How to Split a PDF Into Separate Pages.
Frequently Asked Questions
Fixing sideways PDF pages usually takes only a few steps. Select the affected pages, rotate them in the correct direction, save the PDF, and reopen the file once to make sure the changes were saved.
This guide is based on current Adobe Acrobat and Apple Preview documentation. Software interfaces and available features may change over time. Last checked: September 2026.