diff --git a/public/scripts/autoDownload.js b/public/scripts/autoDownload.js
deleted file mode 100644
index 908ac72..0000000
--- a/public/scripts/autoDownload.js
+++ /dev/null
@@ -1,12 +0,0 @@
-function ready(fn) {
-  if (document.readyState != "loading") {
-    fn();
-  } else {
-    document.addEventListener("DOMContentLoaded", fn);
-  }
-}
-ready(main);
-
-function main() {
-  generateZIP(window.targetDeviceId);
-}
diff --git a/src/pages/download/_autoDownload.ts b/src/pages/download/_autoDownload.ts
new file mode 100644
index 0000000..e99aadf
--- /dev/null
+++ b/src/pages/download/_autoDownload.ts
@@ -0,0 +1,13 @@
+export function readyForAutoDownload(fn: () => void): void {
+  if (document.readyState != "loading") {
+    fn();
+  } else {
+    document.addEventListener("DOMContentLoaded", fn);
+  }
+}
+
+export function mainForAutoDownload(): void {
+  generateZIP((window as any).targetDeviceId);
+}
+
+readyForAutoDownload(mainForAutoDownload);
diff --git a/src/pages/download.astro b/src/pages/download/index.astro
similarity index 93%
rename from src/pages/download.astro
rename to src/pages/download/index.astro
index ecd0acb..474005a 100644
--- a/src/pages/download.astro
+++ b/src/pages/download/index.astro
@@ -1,7 +1,7 @@
 ---
-import BaseLayout from "../layouts/BaseLayout.astro";
-import "/src/styles/download.css";
-import ErrorPage from "../components/ErrorPage.astro";
+import BaseLayout from "../../layouts/BaseLayout.astro";
+import ErrorPage from "../../components/ErrorPage.astro";
+import "./index.css";
 ---
 
 <script>
@@ -43,6 +43,7 @@ import ErrorPage from "../components/ErrorPage.astro";
   hideUnuseScreen();
   handleDeviceIdSearchParams();
 </script>
+<script src="./_autoDownload.ts"></script>
 
 <BaseLayout>
   <meta
@@ -50,7 +51,6 @@ import ErrorPage from "../components/ErrorPage.astro";
     name="description"
     content="I've just used MockUPhone to wrap my app screenshots. It supports lots of devices including iPhone mockup, iPad mockup, Android mockup and TV mockup."
   />
-  <script type="text/javascript" src="/scripts/autoDownload.js"></script>
   <script type="text/javascript" src="/scripts/jszip.js"></script>
   <script
     type="text/javascript"
diff --git a/src/styles/download.css b/src/pages/download/index.css
similarity index 100%
rename from src/styles/download.css
rename to src/pages/download/index.css