Product Detail Pdf

[GJC Web Design]

why not just over ride the components\com_virtuemart\views\productdetails\tmpl\default_pdf.php

add inline css changes etc ...  TCPDF is never going to display css libraries like bootstrap etc correctly ...  really think your making a mountain ot of a molehill here...

TCPDF understands basic inline css and html tags .. plenty of documentation at the TCPDF site

I regularly make pretty complex pdf layouts using this technique 

[Studio 42]

If you have a render error, then you have missing tags in the HTML or a PHP error.
To check the PHP errors, you can search in your PHP error.log

[ShafanHameed]

Thanks everyone.. i will try to override default_pdf.php and will share the details here..