AddPDF is a utility for concatenating several PDF files into one single PDF file. Simply drag PDF files into the file list, re-arrange them using drag and drop and then click the "Add" button to combine them.
Add transparent watermarks to each page with the "Stamp" button and "Alpha" control.
AddPDF is part of the Limit Point Software "Utilities Bundle" which includes all software at http://www.limit-point.com/Utilities.html. A single donation unlocks all the utility software, upgrades are always free and new products always included.
Added support for "watermarks" with transparency. Use the new "Stamp" button to select a PDF file to use as the watermark, and choose the transparency using the "Alpha" slider. Only the first page is used as the watermark.
ERIC WOEHLER Preview does this also - just open all the PDF files you want to concatenate, make sure the sidebar is showing on all the files, then simply drag and drop the thumbnails from one sidebar onto the sidebar of the file you want to combine the additional files. You can do a 'select all' and drag a bunch of thumbnails from one sidebar to another etc etc untill all the files are present in one file, then save/save as and all done.. (Version 1.0)