Stop org-mode export adding file:// to relative links

config.org

@@ -548,6 +548,21 @@ Export external links as ~target= “_blank”~, from [[https://emacs.stackexcha
                'my-org-export-add-target-blank-to-http-links)
 #+END_SRC
 
+Get rid of =file://= using the same method.
+
+#+BEGIN_SRC emacs-lisp
+  (defun my-org-export-correct-file-links (text backend info)
+    "Add target=\"_blank\" to external links."
+    (when (and
+           (org-export-derived-backend-p backend 'html)
+           (string-match "href=\"file[^\"]+" text))
+      (string-match "file://" text)
+      (replace-match "" nil nil text)))
+
+  (add-to-list 'org-export-filter-link-functions
+               'my-org-export-correct-file-links)
+#+END_SRC
+
 *** Packages
 
 **** =org-agenda-property=