devaraj3 · devaraj3 · May 17, 2026 · May 17, 2026 · May 17, 2026 · May 17, 2026
diff --git a/index.html b/index.html
@@ -3,6 +3,16 @@
   <head>
     <meta charset="UTF-8" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <meta
+      name="description"
+      content="Open STEP, IGES, STL, OBJ, and more CAD formats instantly in your browser. Orbit, measure edges, apply section planes, and export snapshots — no install required."
+    />
+    <meta property="og:title" content="CAD Viewer — Browser-based 3D CAD" />
+    <meta
+      property="og:description"
+      content="Free, offline-capable 3D CAD viewer. Supports STEP, IGES, STL, OBJ, 3MF, BREP, GLB."
+    />
+    <link rel="icon" href="/favicon.svg" type="image/svg+xml" />
     <title>CAD Viewer</title>
     <style>
       html, body, #root { height: 100%; }
@@ -11,13 +21,10 @@
       #viewport { height: 100vh; width: 100vw; }
       /* Ensure any canvas renders as a block and fills its parent */
       canvas { display: block; }
-      /* Make grid/axes more visible on a dark background */
-      :root { color-scheme: dark; }
     </style>
   </head>
   <body>
     <div id="root"></div>
     <script type="module" src="/src/main.tsx"></script>
   </body>
 </html>
-
diff --git a/package-lock.json b/package-lock.json
diff --git a/package.json b/package.json
@@ -18,7 +18,8 @@
     "react": "^18.2.0",
     "react-dom": "^18.2.0",
     "react-router-dom": "^6.30.3",
-    "three": "0.180.0"
+    "three": "0.180.0",
+    "three-mesh-bvh": "^0.9.10"
   },
   "devDependencies": {
     "@eslint/js": "^9.39.4",

diff --git a/public/favicon.svg b/public/favicon.svg