Overview
This tag's only purpose is to fetch the number of the terms in a taxonomy that match your set of filtering parameters without the need for a tag pair/loop.
Example
There are {{ taxonomy:count in="tags" }} tags in this site.
There are 6201 tags in this site.
You could do the same thing inside a regular taxonomy tag by aliasing the results to a single variable and using the count modifier.
{{ taxonomy:tags as="terms" }}There are {{ terms | count }} tags in this site.{{ /taxonomy:tags }}
Parameters
in|from
The taxonomy in which to count terms.
*
All parameters available on the taxonomy tag are available.