vtiger System requirements for PDF Maker

First at all, we need to say that this article is not only about PDF Maker System requirements but it is also use full for vtiger CRM requirements.

The most important requirement in the process of Activation, Deactivation or Reactivation license of PDF Maker is Internet connection to your server.
Also, you need to have our Free extensions Installer for validation and additional management.

Now, PHP setting:

PHP 5.6 or PHP 7.0 up to 7.2
(it is possible to run PDF Maker on PHP 7.3 & 7.4 but you may encounter that some features will not work so we don't recommend it)
max_input_vars 10000
max_execution_time 1000
memory_limit = 512M
post_max_size = 128M
max_input_time = 120
upload_max_size = 5M

And also important to correct working of PDF Maker is php mb_string function.
How to enable mb_string you can read in our FAQ

How to edit .php variables is described in our Blog: How to change php variables for your vtiger CRM?.