diff --git a/astro.config.mjs b/astro.config.mjs
index b3ddb9b..3a10486 100644
--- a/astro.config.mjs
+++ b/astro.config.mjs
@@ -10,6 +10,10 @@ import mdx from "@astrojs/mdx";
 
 import sitemap from "@astrojs/sitemap";
 
+import robotsTxt from "astro-robots-txt";
+
+import { transformerMetaHighlight } from "@shikijs/transformers";
+
 // https://astro.build/config
 export default defineConfig({
   vite: {
@@ -26,7 +30,25 @@ export default defineConfig({
     }
   },
 
-  integrations: [icon(), mdx(), sitemap()],
+  integrations: [icon(), mdx(), sitemap(), robotsTxt()],
+
+  markdown: {
+    shikiConfig: {
+      transformers: [
+        transformerMetaHighlight(),
+        {
+          pre(hast) {
+            hast.properties["data-meta"] = this.options.meta?.__raw;
+            hast.properties["data-code"] = this.source;
+          }
+        }
+      ],
+      themes: {
+        light: "github-light",
+        dark: "github-dark"
+      }
+    }
+  },
 
   site: "https://www.nathancummins.com.au",
 
diff --git a/package-lock.json b/package-lock.json
index 106d98d..a74b97b 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -18,6 +18,7 @@
         "@tailwindcss/vite": "^4.1.11",
         "astro": "^5.12.8",
         "astro-icon": "^1.1.5",
+        "astro-robots-txt": "^1.0.0",
         "astro-seo-schema": "^5.1.0",
         "get-audio-duration": "^4.0.1",
         "schema-dts": "^1.1.5",
@@ -25,6 +26,7 @@
       },
       "devDependencies": {
         "@cspell/dict-en-au": "^1.1.4",
+        "@shikijs/transformers": "^3.9.2",
         "@types/howler": "^2.2.12",
         "@typescript-eslint/eslint-plugin": "^8.38.0",
         "@typescript-eslint/parser": "^8.38.0",
@@ -2122,6 +2124,17 @@
         "@shikijs/types": "3.9.2"
       }
     },
+    "node_modules/@shikijs/transformers": {
+      "version": "3.9.2",
+      "resolved": "https://registry.npmjs.org/@shikijs/transformers/-/transformers-3.9.2.tgz",
+      "integrity": "sha512-MW5hT4TyUp6bNAgTExRYLk1NNasVQMTCw1kgbxHcEC0O5cbepPWaB+1k+JzW9r3SP2/R8kiens8/3E6hGKfgsA==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@shikijs/core": "3.9.2",
+        "@shikijs/types": "3.9.2"
+      }
+    },
     "node_modules/@shikijs/types": {
       "version": "3.9.2",
       "resolved": "https://registry.npmjs.org/@shikijs/types/-/types-3.9.2.tgz",
@@ -3115,6 +3128,16 @@
         "@iconify/utils": "^2.1.30"
       }
     },
+    "node_modules/astro-robots-txt": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/astro-robots-txt/-/astro-robots-txt-1.0.0.tgz",
+      "integrity": "sha512-6JQSLid4gMhoWjOm85UHLkgrw0+hHIjnJVIUqxjU2D6feKlVyYukMNYjH44ZDZBK1P8hNxd33PgWlHzCASvedA==",
+      "license": "MIT",
+      "dependencies": {
+        "valid-filename": "^4.0.0",
+        "zod": "^3.22.2"
+      }
+    },
     "node_modules/astro-seo-schema": {
       "version": "5.1.0",
       "resolved": "https://registry.npmjs.org/astro-seo-schema/-/astro-seo-schema-5.1.0.tgz",
@@ -4768,6 +4791,18 @@
         "node": ">=16.0.0"
       }
     },
+    "node_modules/filename-reserved-regex": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/filename-reserved-regex/-/filename-reserved-regex-3.0.0.tgz",
+      "integrity": "sha512-hn4cQfU6GOT/7cFHXBqeBg2TbrMBgdD0kcjLhvSQYYwm3s4B6cjvBfb7nBALJLAXqmU5xajSa7X2NnUud/VCdw==",
+      "license": "MIT",
+      "engines": {
+        "node": "^12.20.0 || ^14.13.1 || >=16.0.0"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/sindresorhus"
+      }
+    },
     "node_modules/fill-range": {
       "version": "7.1.1",
       "resolved": "https://registry.npmjs.org/fill-range/-/fill-range-7.1.1.tgz",
@@ -9361,6 +9396,21 @@
       "dev": true,
       "license": "MIT"
     },
+    "node_modules/valid-filename": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/valid-filename/-/valid-filename-4.0.0.tgz",
+      "integrity": "sha512-VEYTpTVPMgO799f2wI7zWf0x2C54bPX6NAfbZ2Z8kZn76p+3rEYCTYVYzMUcVSMvakxMQTriBf24s3+WeXJtEg==",
+      "license": "MIT",
+      "dependencies": {
+        "filename-reserved-regex": "^3.0.0"
+      },
+      "engines": {
+        "node": "^12.20.0 || ^14.13.1 || >=16.0.0"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/sindresorhus"
+      }
+    },
     "node_modules/vfile": {
       "version": "6.0.3",
       "resolved": "https://registry.npmjs.org/vfile/-/vfile-6.0.3.tgz",
diff --git a/package.json b/package.json
index 4f945fd..d027ed8 100644
--- a/package.json
+++ b/package.json
@@ -19,6 +19,7 @@
     "@tailwindcss/vite": "^4.1.11",
     "astro": "^5.12.8",
     "astro-icon": "^1.1.5",
+    "astro-robots-txt": "^1.0.0",
     "astro-seo-schema": "^5.1.0",
     "get-audio-duration": "^4.0.1",
     "schema-dts": "^1.1.5",
@@ -26,6 +27,7 @@
   },
   "devDependencies": {
     "@cspell/dict-en-au": "^1.1.4",
+    "@shikijs/transformers": "^3.9.2",
     "@types/howler": "^2.2.12",
     "@typescript-eslint/eslint-plugin": "^8.38.0",
     "@typescript-eslint/parser": "^8.38.0",