oldskool

#!/bin/bash
# Script requires xvfb-run command (provided by xorg-x11-server-Xvfb package)
# Require exactly two arguments (input and output file)
if [ $# -ne 2 ]; then
    echo "Syntax: $0 <input file> <output file>"
    exit 1
fi
xvfb-run --server-args="-screen 0, 1280x1024x24" /usr/bin/wkhtmltopdf-amd64 --use-xserver $1 $2