Create PDF files from Markdown sources in OSX
When Markdown appeared more than 10 years ago, it aimed to make it easier to express ideas in an easy-to-write plain text format. It offers a simple syntax that takes the writer focus away from the formatting, thus giving her time to focus on the actual content.
The market abunds of editors to be used for help with markdown. After a few attempts, I settled to Sublime and its browser preview plugin, which work great for me and have a small memory footprint to accomplish that. To pass the results around to other people, less technical, a markdown file and a bunch of images is not the best approach, so converting it to a more robust format like PDF seems like a much better choice.
Pandoc is the swiss-army knife of converting documents between various formats. While being able to deal with heavy-weight formats like docx and epub, we will need it for the more lightweight markdown. To be able to generate PDF files, we need LaTeX. On OSX, the solution of choice is usually MacTeX.
Setup Pandoc for document conversion
Choose the easy
$ brew update $ brew install pandoc
If the above solution is not working, the alternative is to take the
$ brew install ghc cabal-install $ cabal update $ cabal install pandoc
For those interested, the install page covers each aspect in more depth.
Setup Mactex for PDF generation
$ brew tap phinze/cask $ brew install brew-cask $ brew cask install mactex
Generating PDF files
We will use the current article as the example we want to export as PDF. The markdown source is available as a gist.
When trying the output command from the pandoc documentation, we notice there is a problem, as it can't find
$ pandoc -o out.pdf osx-pdf-from-markdown.markdown pandoc: pdflatex not found. pdflatex is needed for pdf output.
Let's check it's been properly installed and symlink it correctly.
$ ls -lsa /usr/texbin/pdflatex 8 lrwxr-xr-x 1 g wheel 6 Apr 23 14:09 /usr/texbin/pdflatex -> pdftex $ sudo ln -s /usr/texbin/pdflatex /usr/local/bin/
Re-running the output command works correctly and gives us a shiny new PDF file.
$ pandoc -o out.pdf osx-pdf-from-markdown.markdown