Imho the best way currently to create a pdf from html in elixir is rambo+weasyprint. I had many problems with wkhtmltopdf and more complex options. Weasyprint on the other hand does what it suggests and handles css quite well.

I have done this previously with PDF generator to build printable receipt, with background image… but it was in Ruby, with prawn.

I guess I would use pdf_generator w/ Elixir, but I have not done this yet.

For simple card printing, You could use a special stylesheet for printing purpose and include it like this.

<link rel="stylesheet" type="text/css" href="print.css" media="print">

This allows to define what, and what not to print.

Note that prawn is very lightweight as it directly writes raw PDFs (you can think of PDF as a textual format). On the other hand pdf_generator uses wkhtmltopdf which might be quite heavy. There are some libraries similar to prawn for Elixir/Erlang (one even started by Joe Armstrong), but none of them have support for proper custom fonts (it’s a hard task) so that was a showstopper for me to do PDF generation in Elixir.