curl "https://your-store.myshopify.com/apps/proxy_genlook-x/public/download-image?url=https://storage.googleapis.com/bucket-name/image.jpg&filename=My%20Try%20On.jpg" \
  --output downloaded-image.jpg

const downloadUrl = `/apps/proxy_genlook-x/public/download-image?url=${encodeURIComponent(imageUrl)}&filename=${encodeURIComponent(filename)}`;

const link = document.createElement('a');
link.href = downloadUrl;
link.download = filename;
link.click();

HTTP/1.1 200 OK
Content-Type: image/jpeg
Content-Disposition: attachment; filename="Genlook - Your Try On - T-Shirt.jpg"
Content-Length: 245678

[binary image data]