There's this HTML spec issue for an include feature that I think could always use more support: https://github.com/whatwg/html/issues/2791 https://github.com/wh

There's this HTML spec issue for an include feature that I think could always use more support: https://github.com/whatwg/html/issues/2791 https://github.com/whatwg/html/issues/2791 One of the things said in there is that they look for usage of userland solutions. I mentioned in another comment, but there are custom elements that do client-side includes, like: https://www.npmjs.com/package/html-include-element https://www.npmjs.com/package/html-include-element