The freeware ‘PDFsam’ (previously ‘PDF Split and Merge’) can separate and merge individual PDFs. You have several presentations existing as PDFs and must create just one from them - changing every PDF back to the raw data and then merging and converting them is both cumbersome and time-intensive.
The freeware ‘PDFsam’ shortens the process by separating or merging already existing PDFs in the space of a few mouse clicks.
In conclusion: A very effective and, most importantly, easy to use tool - if nothing else, because the interface is available in German. We offer you both the 32 Bit version and the 64 Bit edition to download as a package.
Please note: For ‘PDFsam’ to start on your system, the Java Runtime must also be installed. During the installation, the tool tries to bring a toolbar to your computer and to change browser settings. You can prevent this by un-ticking the box.
You can also find a version for Mac OS, to download, on the manufacturer's homepage.