diff --git a/web/index.html b/web/index.html
index 2321c62..0c5ddc3 100644
--- a/web/index.html
+++ b/web/index.html
@@ -3,6 +3,8 @@
   <head>
     <meta charset="UTF-8" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <link rel="icon" type="image/svg+xml" href="/favicon.svg" />
+    <meta name="theme-color" content="#0a0f0c" />
     <title>agenttwo-tools — qwen3 mit Vision</title>
   </head>
   <body>
diff --git a/web/public/favicon.svg b/web/public/favicon.svg
new file mode 100644
index 0000000..349f2b7
--- /dev/null
+++ b/web/public/favicon.svg
@@ -0,0 +1,7 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 32 32" role="img" aria-label="agenttwo-tools">
+  <rect width="32" height="32" rx="7" fill="#0a0f0c"/>
+  <rect x="0.75" y="0.75" width="30.5" height="30.5" rx="6.25" fill="none" stroke="#1e2c23" stroke-width="1.5"/>
+  <path d="M8 10.5 L13.5 16 L8 21.5" fill="none" stroke="#3ddc84" stroke-width="3.2"
+        stroke-linecap="round" stroke-linejoin="round"/>
+  <rect x="16.5" y="19" width="8.5" height="3" rx="1.5" fill="#ffb454"/>
+</svg>
