diff --git a/src/js/isLoad.js b/src/js/isLoad.js
new file mode 100644
index 0000000..77ad5c8
--- /dev/null
+++ b/src/js/isLoad.js
@@ -0,0 +1,17 @@
+function checkScriptLoad() {
+  chrome.extension.onMessage.addListener(function(request, sender, response) {
+    if (request.msg == 'is_page_capturable') {
+      try {
+        if (isPageCapturable()) {
+          response({msg: 'capturable'});
+        } else {
+          response({msg: 'uncapturable'});
+        }
+      } catch(e) {
+        response({msg: 'loading'});
+      }
+    }
+  });
+}
+
+checkScriptLoad();