Variable: org-html-meta-tags
org-html-meta-tags is a customizable variable defined in
ox-html.el.gz.
Value
org-html-meta-tags-default
Documentation
Form that is used to produce meta tags in the HTML head.
Can be a list where each item is a list of arguments to be passed
to org-html--build-meta-entry. Any nil items are ignored.
Also accept a function which gives such a list when called with a single argument (INFO, a communication plist).
This variable was added, or its default value changed, in Org version
9.5.
Source Code
;; Defined in /usr/src/emacs/lisp/org/ox-html.el.gz
;;;; Template :: Styles
(defcustom org-html-meta-tags #'org-html-meta-tags-default
"Form that is used to produce meta tags in the HTML head.
Can be a list where each item is a list of arguments to be passed
to `org-html--build-meta-entry'. Any nil items are ignored.
Also accept a function which gives such a list when called with a
single argument (INFO, a communication plist)."
:group 'org-export-html
:package-version '(Org . "9.5")
:type '(choice
(repeat
(list (string :tag "Meta label")
(string :tag "label value")
(string :tag "Content value")))
function))