diff --git a/src/utils.ts b/src/utils.ts
index 71479e2..a40aba0 100644
--- a/src/utils.ts
+++ b/src/utils.ts
@@ -50,12 +50,14 @@ const generateThumbnail = async (f: File): Promise<Buffer> => {
     can.width = dims[0];
     can.height = dims[1];
 
-    const ctx = can.getContext("2d");
+    const ctx = can.getContext("bitmaprenderer");
+
+    const bmp = await createImageBitmap(source, { resizeHeight: dims[1], resizeWidth: dims[0], resizeQuality: 'high' });
 
     if (!ctx)
         return Buffer.alloc(0);
 
-    ctx.drawImage(source, 0, 0, dims[0], dims[1]);
+    ctx?.transferFromImageBitmap(bmp);
 
     const blob = await new Promise<Blob | null>(_ => can.toBlob(_));
     if (!blob)