A simple Ghostscript command to merge two PDFs in a single file is shown below: gs -dNOPAUSE -sDEVICE=pdfwrite -sOUTPUTFILE=combine.pdf -dBATCH 1.pdf 2.pdf
//combile all the files gs -dNOPAUSE -sDEVICE=pdfwrite -sOUTPUTFILE=ANDHealth_website_wireframes.pdf -dBATCH homepage.pdf programs_overview.pdf plus.pdf bootcamp.pdf bright_future.pdf investor.pdf alumni.pdf partners.pdf events_archive_custom_post_type.pdf events_single.pdf News_archive.pdf news_single.pdf Rescources_custom_post_type.pdf about.pdf
//convert to v1.4 printer resolution pdf ghostscript -sDEVICE=pdfwrite -dCompatibilityLevel=1.4 -dPDFSETTINGS=/printer -dNOPAUSE -dQUIET -dBATCH -sOutputFile=output.pdf input.pdf