diff --git a/docs/favicon.svg b/docs/favicon.svg
new file mode 100644
index 0000000..e415ad7
--- /dev/null
+++ b/docs/favicon.svg
@@ -0,0 +1,9 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 64 64" role="img" aria-label="ChatGPT Session to CPA and sub2api">
+  <rect width="64" height="64" rx="14" fill="#24505a"/>
+  <path d="M17 18h19c6 0 11 5 11 11v1" fill="none" stroke="#ffffff" stroke-width="5" stroke-linecap="round"/>
+  <path d="M41 23l7 7-7 7" fill="none" stroke="#ffffff" stroke-width="5" stroke-linecap="round" stroke-linejoin="round"/>
+  <path d="M47 46H28c-6 0-11-5-11-11v-1" fill="none" stroke="#9fe3d2" stroke-width="5" stroke-linecap="round"/>
+  <path d="M23 41l-7-7 7-7" fill="none" stroke="#9fe3d2" stroke-width="5" stroke-linecap="round" stroke-linejoin="round"/>
+  <rect x="22" y="24" width="20" height="16" rx="4" fill="#ffffff"/>
+  <path d="M27 30h10M27 35h7" stroke="#24505a" stroke-width="3" stroke-linecap="round"/>
+</svg>
diff --git a/docs/index.html b/docs/index.html
index aee3df2..bd147a7 100644
--- a/docs/index.html
+++ b/docs/index.html
@@ -5,6 +5,7 @@
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
     <title>ChatGPT Session -> CPA / sub2api</title>
     <meta name="theme-color" content="#24505a" />
+    <link rel="icon" href="./favicon.svg" type="image/svg+xml" sizes="any" />
     <style>
       :root {
         color-scheme: light;