diff --git a/www/Makefile b/www/Makefile
new file mode 100644
index 000000000..069466a6c
--- /dev/null
+++ b/www/Makefile
@@ -0,0 +1,2 @@
+check:
+	find -name '*.html' | while read f; do tidy -e < "$$f" | sed "s|^-e|$$f|"; done