Simple python file that converts all ".pptx" files into ".pdf" files and them merges them into one file
Install a module using "python -m pip install PyPDF2" Change the input folder to whatever folder you have your ".pptx" files in
The last loop will delete all the old ".pdf" files when one merged file is created, to avoid this, remove those 2 lines. I will not be responsible for the loss of any wanted files
You can stop the individual ".pdfs" from being deleted by removing the last loop entirely. Additionally you can changed the output file name to something else.