For a website implementation, Mopinion delivers a Javascript tag. The script can be placed on all the URL’s of a domain, or the specific pages you want to deploy the Mopinion feedback forms. There are two possibilities to place the script on a webpage.
https://mopinion.com/js-tag-implementation-website/
Google Tag Manager is a free tag management system. Instead of implementing the Mopinion script directly into your webpages’ HTML code, you can install the tag manager script once and control the Mopinion script from within Google.
https://mopinion.com/installation-mopinion-via-google-tag-manager/