diff --git a/tools/check b/tools/check
new file mode 100755
index 00000000..3bd6d4d3
--- /dev/null
+++ b/tools/check
@@ -0,0 +1,5 @@
+#!/bin/bash -eu
+
+mkdir -p build
+asciidoctor --failure-level=WARN -v book.adoc -o build/book.html
+htmlproofer --disable-external build/book.html