When pages end up out of order
Scanning a stack of paper out of sequence, combining sections from different sources, or simply changing your mind about structure all leave a PDF's pages in the wrong order.
How to reorder pages here
Upload your PDF and write out the new order as a comma-separated list of page numbers. For a 4-page PDF, "3,1,2,4" moves the third page to the front. Every page must appear exactly once; this tool reorders, it doesn't drop pages (use page removal for that, before or after reordering).