The following tutorial shows how to disable the HTML purifier in PrestaShop 1.6.x templates.
In order to do this you should perform the following steps:
1) Open your PrestaShop admin panel and navigate to the Preferences -> General tab
2) Click on the No button near Use HTMLPurifier Library
3) Press Save button to save the changes
You have successfully disabled the HTML purifier in your PrestaShop 1.6.x templates.