diff --git a/docs/contributing.rst b/docs/contributing.rst
--- a/docs/contributing.rst
+++ b/docs/contributing.rst
@@ -118,6 +118,9 @@ multiline functions should be indented t
 ``{}``.
 Variables holding jQuery objects should be named with a leading ``$``.
 
+Run ``scripts/run-all-cleanup`` before committing to ensure some basic code
+formatting consistency.
+
 Commit messages should have a leading short line summarizing the changes. For
 bug fixes, put ``(Issue #123)`` at the end of this line.