diff --git a/frontend/src/preview/PdfViewer.tsx b/frontend/src/preview/PdfViewer.tsx
index 424589b..83fc1d8 100644
--- a/frontend/src/preview/PdfViewer.tsx
+++ b/frontend/src/preview/PdfViewer.tsx
@@ -441,15 +441,9 @@ function PdfPageCanvas({
       || undefined;
     const observer = new IntersectionObserver((entries) => {
       entries.forEach((entry) => {
-        console.log('[PdfViewer] intersection', {
-          page: descriptor.number,
-          isIntersecting: entry.isIntersecting,
-          ratio: entry.intersectionRatio,
-        });
         if (!entry.isIntersecting || hasRenderedRef.current) {
           return;
         }
-        console.log('[PdfViewer] rendering page', descriptor.number);
         void renderPage();
       });
     }, {
@@ -457,7 +451,6 @@ function PdfPageCanvas({
       rootMargin: '200px 0px',
       threshold: 0.1,
     });
-    console.log('[PdfViewer] observing page', descriptor.number, { rootMargin: '200px 0px', threshold: 0.1 });
     observer.observe(target);
     return () => observer.disconnect();
   }, [renderPage, rootRef, viewportRef]);