How page changes are saved
Nothing is changed until you save. The engine then builds a new PDF from your page list, copying each page with its content and resources, so text stays selectable and links keep working.
Rotation sets the page’s own rotation flag, which every viewer respects; it does not re-render anything. Blank pages take the size of the page before them.
Steps
- Add the PDF.
- Select a page, then move, rotate, duplicate, delete or add a blank page after it.
- Check the new order in the rail.
- Save and download.
Limits, stated plainly
- Bookmarks that point at deleted pages are dropped with them.
Engine: pdf-lib in a Web Worker; pdf.js thumbnails. Your file is not uploaded; check it yourself.