See every page as a thumbnail, drag them into the order you want, rotate the sideways ones and remove the pages you don't need — then save. All in your browser.
Drag pages to reorder, use the rotate and remove buttons on each thumbnail, and download the rebuilt PDF. Your document is processed entirely on your device.
No. Thumbnails are rendered and the PDF is rebuilt in your browser; nothing is uploaded.
Yes — drag to reorder and mark pages for removal, then save once.
Yes. The rotation is saved into the downloaded PDF, not just shown on screen.