Every page turns by the same amount. There is no page-by-page control here. What you choose is added to the rotation the page already carries, so a page sitting at 90 degrees, turned another 90, ends up at 180. Nothing inside the page is redrawn: the text and the images are written back out as they came in.
The PDF engine (about 500 KB) loads only when you drop a file in, so the page itself stays light. Your file is read on your own machine and never sent anywhere. Open your browser’s network tab and watch while you use it.
No. The setting applies to every page in the file. If only some pages are sideways, pull those out with the split tool, turn them, and put the file back together with the merge tool.
Yes. It is stored in the file as the page’s own rotation, not as a view setting your reader remembers, so the page opens turned wherever it is opened.
No. The page content is carried across untouched. Two things do change besides the rotation: the file is written out fresh, so its size can come out different, and the PDF library stamps its own name into the Producer field and sets the modification date to now.
It is refused. There is no place to type a password here, and any encrypted PDF is turned away, including one that opens without a password but carries permission restrictions. You get an error message and no file.
These all work the same way, in your browser. Most are free; the ones marked as needing a plan are not.
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