diff --git a/web-to-ppt/background.js b/web-to-ppt/background.js
index 0658e43..96fec62 100644
--- a/web-to-ppt/background.js
+++ b/web-to-ppt/background.js
@@ -220,7 +220,7 @@ function arrayBufferToBase64(buffer) {
 
 // 消息处理
 chrome.runtime.onMessage.addListener((message, sender, sendResponse) => {
-  // 采集并下载 JSON（兼容旧流程）
+  // 采集并缓存数据（不下载 JSON，由 popup 直接转化下载 PPTX）
   if (message?.type === "WEB_TO_PPT_CAPTURE_START") {
     (async () => {
       const settings = normalizeSettings(message.options);
@@ -229,10 +229,8 @@ chrome.runtime.onMessage.addListener((message, sender, sendResponse) => {
       assertCaptureableTab(tab);
       const data = await captureCurrentTab(tab, settings);
       lastCaptureData = data; // 缓存数据
-      const filename = await downloadCapture(data);
       return {
         ok: true,
-        filename,
         actualViewportWidth: data.source?.actualViewportWidth,
         requestedViewportWidth: data.source?.requestedViewportWidth
       };