diff --git a/public/icon-128.png b/public/icon-128.png
new file mode 100644
index 0000000..ddf0601
Binary files /dev/null and b/public/icon-128.png differ
diff --git a/public/icon-16.png b/public/icon-16.png
new file mode 100644
index 0000000..15aeb3e
Binary files /dev/null and b/public/icon-16.png differ
diff --git a/public/icon-32.png b/public/icon-32.png
new file mode 100644
index 0000000..506d754
Binary files /dev/null and b/public/icon-32.png differ
diff --git a/public/icon-48.png b/public/icon-48.png
new file mode 100644
index 0000000..c9b6746
Binary files /dev/null and b/public/icon-48.png differ
diff --git a/public/icon.svg b/public/icon.svg
new file mode 100644
index 0000000..503b890
--- /dev/null
+++ b/public/icon.svg
@@ -0,0 +1,27 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 128 128" width="128" height="128">
+  <!-- Background circle with gradient -->
+  <defs>
+    <linearGradient id="bgGrad" x1="0%" y1="0%" x2="100%" y2="100%">
+      <stop offset="0%" style="stop-color:#6366f1;stop-opacity:1" />
+      <stop offset="100%" style="stop-color:#8b5cf6;stop-opacity:1" />
+    </linearGradient>
+    <linearGradient id="boltGrad" x1="0%" y1="0%" x2="100%" y2="100%">
+      <stop offset="0%" style="stop-color:#fde68a;stop-opacity:1" />
+      <stop offset="100%" style="stop-color:#fbbf24;stop-opacity:1" />
+    </linearGradient>
+  </defs>
+
+  <!-- Background rounded square -->
+  <rect x="4" y="4" width="120" height="120" rx="26" ry="26" fill="url(#bgGrad)" />
+
+  <!-- Subtle inner glow -->
+  <rect x="4" y="4" width="120" height="120" rx="26" ry="26"
+    fill="none" stroke="rgba(255,255,255,0.15)" stroke-width="2"/>
+
+  <!-- Lightning bolt shape -->
+  <polygon points="72,14 38,68 62,68 56,114 90,60 66,60"
+    fill="url(#boltGrad)"
+    stroke="rgba(255,255,255,0.3)"
+    stroke-width="1.5"
+    stroke-linejoin="round"/>
+</svg>
diff --git a/wxt.config.ts b/wxt.config.ts
index a77d75f..f566fdf 100644
--- a/wxt.config.ts
+++ b/wxt.config.ts
@@ -7,6 +7,12 @@ export default defineConfig({
     name: 'LexAI - AI Writing Assistant',
     description: 'Grammar checking and writing assistance powered by your own LLM API key',
     version: '0.1.0',
+    icons: {
+      '16': 'icon-16.png',
+      '32': 'icon-32.png',
+      '48': 'icon-48.png',
+      '128': 'icon-128.png',
+    },
     permissions: [
       'storage',
       'activeTab',