Acrobat online services make it quick and easy to change the order of PDF pages. Set up your desired order by highlighting a page thumbnail. Then drag and drop the page into your new desired location. You can also rotate pages to portrait or landscape mode. If you need to delete a page, select it and click the trashcan icon.
For more advanced PDF tools, try Adobe Acrobat Pro DC for free for seven days on Windows or Mac. The free trial lets you edit PDF text and images, add page numbers, convert PDFs, merge files, split PDFs, reduce file size, and more.