diff --git a/views/treeviewer/life_expert.html b/views/treeviewer/life_expert.html
index 1e9f565c..b77c6409 100644
--- a/views/treeviewer/life_expert.html
+++ b/views/treeviewer/life_expert.html
@@ -59,6 +59,7 @@
                 width: document.getElementById("OneZoomCanvasID").width,
                 height: document.getElementById("OneZoomCanvasID").height,
             });
+            context.scale(window.devicePixelRatio, window.devicePixelRatio);
             onezoom.controller.draw_single_frame(context);
             lnk.href = URL.createObjectURL(new Blob([context.getSerializedSvg(true)], {
                 type: "image/svg+xml",