I’m trying to investigate why Google in Google Tag Manager is embedding DoubleClick Floodlight (Tracking Pixels) as IFRAME in top of HEAD section.
Yes, it is not a bug in Tag Manager. It is how it works.
I’ve found that in “Permitted content” section it says something about IFRAME but whole description is a bit difficult to understand.
- Does HTML5 spec. allows to use IFRAME in HEAD section at all?
- If We can Put IFRAME in HEAD section that what restrictions we have there?