You can insert pages from a paper document using Foxit PDF Editor and your scanner.
- Open the PDF that you want to serve as the basis of the combined file, and choose Home/Organize > Insert > From Scanner (if you have configured presets, you can choose a predefined preset or choose Home/Organize > Insert > From Scanner > Scan to scan pages with new settings), or right-click one page thumbnail and choose Insert Pages… > From Scanner. See also Scan with a Configured Preset.
- In the pop-up From Scanner dialog box, specify the place you want to insert pages.
- Then select a scanner, the input and documents options in the Custom Scan dialog box, and then click Scan.
See also “Create a PDF Using Scanner”
- To leave the original PDF intact as a separate file, choose File > Save As, and type a new name for the merged PDF.