How to Rotate Just One Page in a PDF: An Honest Three-Step Workaround
It happens in almost every scanned batch. Nineteen pages are upright and one, usually a wide table or a landscape chart that someone fed through the scanner sideways, sits at ninety degrees. Readers have to tilt their heads or rotate the view manually every time they reach it, and printed copies come out with that page unreadable in the binder. The fix is simple in principle: turn one page and leave the rest alone. The honest complication is that PdfWill's rotate tool applies its rotation to the whole document, so there is a short workaround to follow.
Here is the sequence, and it takes about three minutes for a typical file. First, open the split tool and use it to separate the document around the offending page, producing the pages before it, the single page itself, and the pages after it as separate files. Second, load only that single-page file into the rotate tool and turn it 90 degrees clockwise or counter-clockwise as needed, then download it. Third, open merge, add the three files back in their original order, and export. The result is your original document with exactly one page reoriented.
A few details save you from redoing the work. Note the page number of the sideways page before you start, because after splitting you will be looking at files named by range rather than content. Check the direction of rotation on the single page before merging: a table that needs turning clockwise looks identical in the thumbnail to one that needs turning counter-clockwise until you actually read the text. If your document has several misaligned pages that all need the same rotation, split them all out first, rotate each one, then do a single merge rather than repeating the whole cycle.
There are two situations where a different tool fits better. If the page is upright but the content sits at a slight angle because the paper was skewed on the scanner glass, rotation in 90-degree steps will not fix it; that is a deskew problem, and rescanning the page flat is genuinely faster than fighting it. If the page is correctly oriented but carries wide margins or a scanned edge that makes it look wrong, the crop tool addresses the real issue. Rotation is the answer only when the content itself is turned a quarter or half turn.
One prevention note is worth more than the workaround. Most scanner drivers and document feeders have an auto-rotate or detect-orientation setting that is often switched off by default, and enabling it eliminates the majority of these cases at source. If you are assembling a document from mixed sources, do the rotation check before you add page numbers, watermarks or a cover page, because fixing orientation afterwards means those elements may end up sideways too. Verify the finished file by scrolling through it once at thumbnail size, where a misturned page is obvious at a glance.