diff --git a/assets/upend_b.svg b/assets/upend_b.svg
new file mode 100644
index 0000000..fd0f3d5
--- /dev/null
+++ b/assets/upend_b.svg
@@ -0,0 +1,66 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+   style="fill:none"
+   width="255"
+   height="255"
+   version="1.1"
+   id="svg48"
+   sodipodi:docname="upend_b.svg"
+   inkscape:version="1.2.2 (b0a8486541, 2022-12-01)"
+   inkscape:export-filename="../webext/icon.png"
+   inkscape:export-xdpi="24.094118"
+   inkscape:export-ydpi="24.094118"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:svg="http://www.w3.org/2000/svg">
+  <defs
+     id="defs52" />
+  <sodipodi:namedview
+     id="namedview50"
+     pagecolor="#ffffff"
+     bordercolor="#666666"
+     borderopacity="1.0"
+     inkscape:showpageshadow="2"
+     inkscape:pageopacity="0.0"
+     inkscape:pagecheckerboard="0"
+     inkscape:deskcolor="#d1d1d1"
+     showgrid="false"
+     inkscape:zoom="2.1915705"
+     inkscape:cx="240.23868"
+     inkscape:cy="109.9668"
+     inkscape:window-width="3436"
+     inkscape:window-height="1397"
+     inkscape:window-x="0"
+     inkscape:window-y="0"
+     inkscape:window-maximized="1"
+     inkscape:current-layer="svg48" />
+  <style
+     id="style44">
+        path {
+            fill:none;
+            stroke:#0a0a0a;
+            stroke-width:15px;
+            stroke-linecap:round;
+            stroke-linejoin:round
+        }
+
+        @media (prefers-color-scheme: dark) {
+            path {
+                stroke: white;
+            }
+        }
+    </style>
+  <rect
+     style="fill:#002b36;fill-opacity:1;stroke:none;stroke-width:26.2477;stroke-dasharray:none;stroke-opacity:1"
+     id="rect941"
+     width="256"
+     height="256"
+     x="-0.5"
+     y="-0.5"
+     ry="23.239944" />
+  <path
+     d="m 48.088212,52.5882 v 0 H 206.91179 m -79.41179,0 v 0 l -79.411788,79.41179 m 158.823578,0 v 0 L 127.5,52.5882 m 0,158.82358 v 0 V 52.5882"
+     id="path46"
+     style="stroke:#ffffff;stroke-width:21.1764;stroke-dasharray:none;stroke-opacity:1" />
+</svg>