diff --git a/image.svg b/image.svg
new file mode 100644
index 0000000..562bf80
--- /dev/null
+++ b/image.svg
@@ -0,0 +1,18 @@
+<?xml version="1.0"?>
+<svg width="280" height="120" version="1.1" xmlns="http://www.w3.org/2000/svg">
+<script>
+window.onload = ()=>{ document.getElementById("state").textContent="ON"; };
+</script>
+<rect width="280" height="120" fill="#33c"/>
+<g fill="none" stroke="white" stroke-width="2">
+  <circle cx="20" cy="20" r="4"/>
+  <circle cx="260" cy="20" r="4"/>
+  <circle cx="20" cy="100" r="4"/>
+  <circle cx="260" cy="100" r="4"/>
+  <path d="M20,30 A10,10,0,0,0,30,20 H250 A10,10,0,0,0,260,30
+      V90 A10,10,0,0,0,250,100 H30 A10,10,0,0,0,20,90 Z"/>
+</g>
+<text x="140" y="60" font-family="sans-serif" font-size="20"
+  text-anchor="middle" dominant-baseline="middle" fill="white"
+  stroke="none">JavaScript is <tspan id="state">OFF</tspan></text>
+</svg>