Does extraction modify the original PDF?

No. Extraction creates a new file containing only the selected pages. The original PDF remains completely unchanged.

Can I extract non-consecutive pages?

Yes. Specify individual pages and ranges like 1, 3, 7-10, 15. The extracted PDF will contain those pages in the order specified.

Bookmarks pointing to extracted pages are typically preserved. Bookmarks pointing to pages not included in the extraction are removed.

The pages appear in the order you specify them. Listing pages as 10, 5, 1 would extract those three pages in that reverse order.