diff --git a/web-to-ppt/capture.js b/web-to-ppt/capture.js
index f894ebc..996ddbb 100644
--- a/web-to-ppt/capture.js
+++ b/web-to-ppt/capture.js
@@ -988,12 +988,14 @@
     if ((element.tagName === "SVG" || element.tagName === "svg") && !backgroundUrls.length) {
       try {
         const svgClone = element.cloneNode(true);
-        // 确保有 xmlns
         if (!svgClone.getAttribute('xmlns')) svgClone.setAttribute('xmlns', 'http://www.w3.org/2000/svg');
         const svgStr = new XMLSerializer().serializeToString(svgClone);
         const svgDataUrl = 'data:image/svg+xml;base64,' + btoa(unescape(encodeURIComponent(svgStr)));
         backgroundUrls = [svgDataUrl];
-      } catch (e) { /* 静默失败 */ }
+        console.log('[WebToPPT] SVG captured:', (element.className || element.id || '').slice(0, 30), 'size:', svgStr.length);
+      } catch (e) {
+        console.warn('[WebToPPT] SVG capture failed:', e.message, element.tagName, (element.className || '').slice(0, 30));
+      }
     }
 
     const type = element.tagName === "IMG" || backgroundUrls.length ? "RECTANGLE" : "FRAME";