diff --git a/bin/jssize b/bin/jssize
new file mode 100755
index 0000000..02a5704
--- /dev/null
+++ b/bin/jssize
@@ -0,0 +1,7 @@
+#!/bin/sh
+
+curl https://cdn.jsdelivr.net/gh/"$1" \
+	| tail +7 \
+	| head -n -1 \
+	| gzip \
+	| wc --bytes