diff --git a/frontend/templates/index.html b/frontend/templates/index.html
index 6d05d73..366c7fd 100644
--- a/frontend/templates/index.html
+++ b/frontend/templates/index.html
@@ -157,6 +157,7 @@ async function handleUpload(formData) {
     xhr.setRequestHeader('X-Session-ID', sessionId);
 
     xhr.upload.addEventListener('progress', (e) => {
+      console.log('upload', e.loaded, e.total, e.lengthComputable);
       if (e.lengthComputable) {
         const pct = Math.round((e.loaded / e.total) * 100);
         const mb = (e.loaded / (1024**2)).toFixed(0);