pdftotext pdftk qpdf cpdf

Convert to PDF

Markdown > PDF (Online)

http://markdown2pdf.com/index.html

HTML > PDF (CLI)

https://wkhtmltopdf.org/

Markdown > PDF (CLI)

Other

https://github.com/rhysd/open-pdf.vim

Create blank PDF

http://unix.stackexchange.com/questions/277892/how-do-i-create-a-blank-pdf-from-the-command-line convert xc:none -page Letter blankLetter.pdf
or

convert xc:none -page A4 blankA4.pdf