I recently added Google Tag Manager for a customer and in experimenting I added to my company website. Now in FireFox I am getting a preview pane at the bottom of the page. In Chrome this can be turned off, but I couldn’t find how to do in Firefox till I found the following article.

https://www.shoutmeloud.com/disable-google-tag-manager-preview-pane.html

The basics for this are:

  • Log in to Google Tag Manager.
  • Go to your site dashboard (Workspace < Overview).
  • Click on the option that says Leave Preview Mode.

I hope this helps someone else out there.