Supported Tags

Head Tags

All elements matching html > body head will be moved into html > head.
Duplicates will be removed if not within the same (false) head element:
- Tags: title, base, meta, link, script (with src attribute) and any tag with a matching id attribute
Finally the false head elements will be removed.

All elements matching html > body body will be moved into html > body.
Attributes from these false body tags will be transferred to html > body
- Classes and styles will be appended, other attributes will replace the previous value.
Finally the false body elements will be removed.

Attributes from false html tags (matching html html) will be transferred to the root html element.
- Classes and styles will be appended, other attributes will replace the previous value.
Finally the false html elements will be removed.

Since it's all about transferring items from one place to another, here's a little bonus:

All elements matching html > body helmet-portal will be moved to a respective html > body helmet-destination.
For example, the <helmet-portal to="my-target"> element will transfer its children to a respective <helmet-destination id="my-target"> element.
Duplicates will be removed if not within the same helmet-destination element:
- Any tag with a matching id attribute
If a matching helmet-destination element is not found, the children will stay at their original location.
Both <helmet-portal> and <helmet-destination> elements will disappear in the result, leaving only their children behind.