diff --git a/elfeed-export.el b/elfeed-export.el
index 6d42f97..e04c724 100644
--- a/elfeed-export.el
+++ b/elfeed-export.el
@@ -55,24 +55,30 @@ The function takes an entry argument for extracting the desired value."
   :group 'elfeed-export)
 
 (defun elfeed-export--entry-date (entry)
+  "Return an ISO formatted date string for the given ENTRY."
   (format-time-string "%F %T" (elfeed-entry-date entry)))
 
 (defun elfeed-export--feed-title (entry)
+  "Return the feed title for the given ENTRY."
   (elfeed-feed-title (elfeed-entry-feed entry)))
 
 (defun elfeed-export--entry-feed (entry)
+  "Return the feed URL for the given ENTRY."
   (elfeed-feed-url (elfeed-entry-feed entry)))
 
 (defun elfeed-export--entry-content (entry)
+  "Return the content of the ENTRY."
   (elfeed-deref (elfeed-entry-content entry)))
 
 (defun elfeed-export--entry-to-alist (entry)
+  "Convert an ENTRY to an alist."
   (mapcar (lambda (field)
             (cons (symbol-name (car field))
                   (funcall (cdr field) entry)))
           elfeed-export-fields))
 
 (defun elfeed-export--entries ()
+  "Return all entries that need to be exported."
   (let ((entries)
         (feeds (elfeed-feed-list)))
     (dolist (feed feeds)
@@ -82,9 +88,11 @@ The function takes an entry argument for extracting the desired value."
     (mapcar #'elfeed-export--entry-to-alist entries)))
 
 (defun elfeed-export-to-json ()
+  "Return the JSON string for all entries that should be exported."
   (json-encode (elfeed-export--entries)))
 
 (defun elfeed-export-to-file (path)
+  "Write the JSON string to a file at PATH."
   (interactive "F")
   (write-region (elfeed-export-to-json) nil path nil nil nil t))