I am using Symfony2 Bundle KnpSnappyBundle to convert an html twig template to a pdf.
KnpSnappyBundle is base on Snappy wrapper, that use wkhtmltopdf.
My tem
I know that this question is old but this problem still occurs. In a recent Laravel 5.8 and Twitter Bootstrap 4.0.0 project. I managed to use .col-md .col and getting perfect results by doing the following:
In adding --viewport-size 1024x768 argument on config/snappy.php
'pdf' => array(
'enabled' => true,
'binary' => "C:\wkhtmltopdf\bin\wkhtmltopdf --viewport-size 1024x768",
'timeout' => false,
'options' => array(),
'env' => array(),
)
Then on your view use .col-md or .col without any problems.
Note, include Bootstrap 4 to your HTML using public path.
//Laravel