diff --git a/html/webapp/_headers b/html/webapp/_headers
new file mode 100644
index 0000000..2a351fb
--- /dev/null
+++ b/html/webapp/_headers
@@ -0,0 +1,3 @@
+/*
+  Cross-Origin-Embedder-Policy: credentialless
+  Cross-Origin-Opener-Policy: same-origin