Merge the first page of each file together

pdfjam

  • Shell frontend for the LaTeX pdfpages package for mingling PDFs.
    More information: <https://github.com/rrthomas/pdfjam>.
  • Trick copyright: tl;dr; <https://github.com/tldr-pages/tldr>

pdfjam {{files...}} 1 --outfile {{path/to/output_file.pdf}}

click the source code to copy install pdfjam on any operating system with command-not-found.com