This is a plugin to insert Google Tag Manager to a WordPress site.
This is a Plugin to insert Google Tag Manager (GTM) into your WordPress site. The GTM tag is inserted into the footer by default, using the wp_footer() hook. A custom hook can also be used instead.
The plugin allows the user to choose the container ID to use, and also change the dataLayer name. There is one extra option to add into the datalayer on whether the current user is a logged in user. Other custom datalayer variables can be added, and these will be added to the generated code.
Author website is http://mokusiga.com/google-tag-manager-a-wordpress-plugin/