diff --git a/emacs/init.org b/emacs/init.org
index a46b60b..f2195f9 100755
--- a/emacs/init.org
+++ b/emacs/init.org
@@ -1479,6 +1479,15 @@ Use nvm to manage node versions:
     :commands (nvm-use nvm-use-for nvm-use-for-buffer))
 #+END_SRC
 
+A command to format JS via prettier:
+#+BEGIN_SRC emacs-lisp
+  (defun prettier ()
+    (interactive)
+    (let ((start (if (use-region-p) (region-beginning) (point-min)))
+	  (end (if (use-region-p) (region-end) (point-max))))
+      (shell-command-on-region start end "prettier --parser babel" nil t)))
+#+END_SRC
+
 * LSP Mode
 Emacs support for the Language Server Protocol