diff --git a/index.html b/index.html
index 6a83073..bff1bd9 100644
--- a/index.html
+++ b/index.html
@@ -7,15 +7,31 @@
       name="description"
       content="Ryan Gonyon helps founders and operators make fragile, AI-built or legacy software dependable. Specialized in app rescue, production readiness, AI workflow automation, and internal tool dashboards."
     />
+    <link rel="canonical" href="https://radical.codes/" />
+    <meta name="author" content="Ryan Gonyon" />
     <meta property="og:title" content="Ryan Gonyon | Make Fragile Software Dependable" />
     <meta
       property="og:description"
       content="App rescue, production readiness, AI workflow automation, and proof-first internal tools by Ryan Gonyon."
     />
     <meta property="og:type" content="website" />
-    <meta property="og:url" content="https://radical.codes" />
+    <meta property="og:url" content="https://radical.codes/" />
+    <meta property="og:site_name" content="radical.codes" />
+    <meta property="og:image" content="https://radical.codes/og-image.png" />
+    <meta property="og:image:type" content="image/png" />
+    <meta property="og:image:width" content="1200" />
+    <meta property="og:image:height" content="630" />
+    <meta property="og:image:alt" content="Ryan Gonyon helps founders make fragile software dependable through app rescue, production readiness, and proof-first internal tools." />
     <meta name="twitter:card" content="summary_large_image" />
+    <meta name="twitter:title" content="Ryan Gonyon | Make Fragile Software Dependable" />
+    <meta
+      name="twitter:description"
+      content="Proof-first app rescue, production readiness, AI workflow automation, and internal tools by Ryan Gonyon."
+    />
+    <meta name="twitter:image" content="https://radical.codes/og-image.png" />
+    <meta name="twitter:image:alt" content="Ryan Gonyon helps founders make fragile software dependable." />
     <meta name="theme-color" content="#000000" />
+    <link rel="manifest" href="/site.webmanifest" />
     <title>Ryan Gonyon | Make Fragile Software Dependable</title>
     
     <!-- Google Fonts: Outfit (headings), Inter (body), JetBrains Mono (code) -->
diff --git a/public/og-image.png b/public/og-image.png
new file mode 100644
index 0000000..acd800a
Binary files /dev/null and b/public/og-image.png differ
diff --git a/public/og-image.svg b/public/og-image.svg
new file mode 100644
index 0000000..c75c16a
--- /dev/null
+++ b/public/og-image.svg
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+<svg xmlns="http://www.w3.org/2000/svg" width="1200" height="630" viewBox="0 0 1200 630" role="img" aria-labelledby="title desc">
+  <title id="title">Ryan Gonyon / radical.codes</title>
+  <desc id="desc">Public proof surface for app rescue, production readiness, workflow automation, and dependable software systems.</desc>
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+  <text x="86" y="446" fill="#333333" font-family="Arial, Helvetica, sans-serif" font-size="32" font-weight="600">App rescue / production readiness / reviewable AI workflows</text>
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+</svg>
diff --git a/public/robots.txt b/public/robots.txt
new file mode 100644
index 0000000..e6e2a9f
--- /dev/null
+++ b/public/robots.txt
@@ -0,0 +1,4 @@
+User-agent: *
+Allow: /
+
+Sitemap: https://radical.codes/sitemap.xml
diff --git a/public/site.webmanifest b/public/site.webmanifest
new file mode 100644
index 0000000..6edee56
--- /dev/null
+++ b/public/site.webmanifest
@@ -0,0 +1,9 @@
+{
+  "name": "radical.codes",
+  "short_name": "radical.codes",
+  "description": "Ryan Gonyon's public proof surface for app rescue, production readiness, workflow automation, and dependable software systems.",
+  "start_url": "/",
+  "display": "minimal-ui",
+  "background_color": "#f8f8f4",
+  "theme_color": "#000000"
+}
diff --git a/public/sitemap.xml b/public/sitemap.xml
new file mode 100644
index 0000000..39d3813
--- /dev/null
+++ b/public/sitemap.xml
@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
+  <url>
+    <loc>https://radical.codes/</loc>
+    <lastmod>2026-06-16</lastmod>
+    <changefreq>weekly</changefreq>
+    <priority>1.0</priority>
+  </url>
+</urlset>