Upload a PDF and select the pages you want gone, and the tool removes them and gives you the cleaned-up document.
Yes, select all the pages you want to remove using checkboxes or by specifying page numbers, then delete them in one operation.
The tool creates a new PDF without the deleted pages. Your original file is never modified, so you always have the original to work from.
Pages are removed and the remaining pages are renumbered sequentially. If page 3 is deleted, old page 4 becomes new page 3.