Hi @asugar. 
Would you mind elaborating a bit on what you mean? We call the categories and tags navigational aid “breadcrumbs”; @Canapin highlights them in their screenshot.
Normally I’d mention showing a screenshot and marking when you’d like them, and then we would work back from there, but I have another observation, first:
I think that if you were to add that to each page, it would essentially show multiple identical navigation menus, and in close proximity to each other.
As an alternative, is there something we could do with the existing breadcrumb navigation to make it work for your site? 
Also worth clarifying the meaning of “breadcrumbs”. I’ve been in numerous conversations where two parties meant different things:
- Hierarchical breadcrumbs as reflection of site structure (categories/sub-categories/tags, or books/title/chapter)
- Tracking breadcrumbs as history of visited pages (my favorite example is https://www.dokuwiki.org/dokuwiki, click a few random links and check the header)
@asugar, which type of breadcrumbs are you referring?