diff --git a/validate_html.sh b/validate_html.sh
new file mode 100755
index 0000000..651b7fd
--- /dev/null
+++ b/validate_html.sh
@@ -0,0 +1,10 @@
+#
+# check that all the html files are valid xml
+# sudo apt install libxml2-utils
+# no output = pass
+# zzz 1/23
+#
+for i in `find -name *.html`
+do
+	xmllint $i > /dev/null || echo "FAIL $i"
+done