Combine several PDFs — or photos from your camera roll — into one, and move the pages into the order you want before you save.
No. Every operation runs entirely in your browser. Your files never leave your device and are never sent to a server.
As many as your browser's memory allows — typically dozens of normal documents at once.
Yes — twice over. Add the files in the order you want, then rearrange the individual pages in the preview grid before saving: pages from different files can be interleaved, rotated or dropped.
Yes. Tap “Add photos” and pick pictures from your camera roll — they are turned into a PDF right on your device (one page per photo, in the order you picked them) and the tool runs on that.