jPDF Notes has the following options available to modify pages within a PDF document.
Appending Document – Append another PDF document to the current one.
Inserting Pages – Insert pages from another PDF document into the current one.
Extracting Pages – Extract pages from the current document into a new document.
Deleting Pages – Delete pages from the current document.
Rotating Pages – Rotate pages in the current document.
Cut, Copy, and Paste Pages - Cut/Copy and Paste pages within a document or across documents.
Importing Images as Pages - Takes a selected image and inserts the image as a page within the PDF