diff --git a/app/[locale]/agenda/[slug]/page.tsx b/app/[locale]/agenda/[slug]/page.tsx
index a60ba6b..3068104 100644
--- a/app/[locale]/agenda/[slug]/page.tsx
+++ b/app/[locale]/agenda/[slug]/page.tsx
@@ -43,6 +43,7 @@ export async function generateMetadata({
       description: post.excerpt,
       url,
       type: "article",
+      siteName: "Poyraz Avsever",
       locale: locale === "en" ? "en_US" : "tr_TR",
       alternateLocale:
         translations.length > 1
@@ -64,6 +65,7 @@ export async function generateMetadata({
       title: post.title,
       description: post.excerpt,
       images: [post.coverImage],
+      creator: "@poyrazavsever",
     },
   };
 }
diff --git a/app/[locale]/animation-sources/[slug]/page.tsx b/app/[locale]/animation-sources/[slug]/page.tsx
index 98051f8..8f0e06e 100644
--- a/app/[locale]/animation-sources/[slug]/page.tsx
+++ b/app/[locale]/animation-sources/[slug]/page.tsx
@@ -6,19 +6,17 @@ import {
   getAnimationSourceBySlug,
   listAnimationSources,
 } from "@/data/animation-sources";
-
-const SITE_URL =
-  process.env.NEXT_PUBLIC_SITE_URL || "https://poyrazavsever.com";
+import {
+  createAlternates,
+  getAbsoluteUrl,
+  getLocalizedUrl,
+  type SiteLocale,
+} from "@/lib/seo";
 
 type AnimationSourceDetailPageProps = {
   params: Promise<{ locale: string; slug: string }>;
 };
 
-function getLocalizedPath(locale: string, slug: string) {
-  const localePrefix = locale === "tr" ? "" : `/${locale}`;
-  return `${localePrefix}/animation-sources/${slug}`;
-}
-
 export async function generateStaticParams() {
   const sources = await listAnimationSources();
   return sources.map((source) => ({
@@ -39,22 +37,15 @@ export async function generateMetadata({
     return { title: locale === "en" ? "Source not found" : "Kaynak bulunamadı" };
   }
 
-  const url = `${SITE_URL}${getLocalizedPath(locale, source.slug)}`;
-  const socialImageUrl = new URL(source.coverImage, SITE_URL).toString();
-  const turkishUrl = `${SITE_URL}${getLocalizedPath("tr", source.slug)}`;
-  const englishUrl = `${SITE_URL}${getLocalizedPath("en", source.slug)}`;
+  const siteLocale = locale as SiteLocale;
+  const path = `/animation-sources/${source.slug}`;
+  const url = getLocalizedUrl(siteLocale, path);
+  const socialImageUrl = getAbsoluteUrl(source.coverImage);
 
   return {
     title: source.title,
     description: source.excerpt,
-    alternates: {
-      canonical: url,
-      languages: {
-        "tr-TR": turkishUrl,
-        "en-US": englishUrl,
-        "x-default": turkishUrl,
-      },
-    },
+    alternates: createAlternates(siteLocale, { tr: path, en: path }),
     openGraph: {
       title: source.title,
       description: source.excerpt,
@@ -68,7 +59,7 @@ export async function generateMetadata({
       images: [
         {
           url: socialImageUrl,
-          type: "image/gif",
+          type: "image/webp",
           width: 480,
           height: 480,
           alt: source.title,
@@ -98,7 +89,10 @@ export default async function AnimationSourceDetailPage({
 
   if (!source) notFound();
 
-  const url = `${SITE_URL}${getLocalizedPath(locale, source.slug)}`;
+  const url = getLocalizedUrl(
+    locale as SiteLocale,
+    `/animation-sources/${source.slug}`,
+  );
 
   return (
     <>
diff --git a/app/[locale]/animation-sources/page.tsx b/app/[locale]/animation-sources/page.tsx
index 5325af5..6dcb485 100644
--- a/app/[locale]/animation-sources/page.tsx
+++ b/app/[locale]/animation-sources/page.tsx
@@ -2,9 +2,12 @@ import type { Metadata } from "next";
 import { getTranslations } from "next-intl/server";
 import { AnimationSourcesContent } from "@/components/animation-sources-content";
 import { listAnimationSources } from "@/data/animation-sources";
-
-const SITE_URL =
-  process.env.NEXT_PUBLIC_SITE_URL || "https://poyrazavsever.com";
+import {
+  createAlternates,
+  getAbsoluteUrl,
+  getLocalizedUrl,
+  type SiteLocale,
+} from "@/lib/seo";
 
 type AnimationSourcesPageProps = {
   params: Promise<{ locale: string }>;
@@ -14,27 +17,18 @@ export async function generateMetadata({
   params,
 }: AnimationSourcesPageProps): Promise<Metadata> {
   const { locale } = await params;
-  const [t, sources] = await Promise.all([
-    getTranslations({ locale, namespace: "AnimationSources" }),
-    listAnimationSources(locale),
-  ]);
-  const localizedPath = locale === "en" ? "/en/animation-sources" : "/animation-sources";
-  const url = `${SITE_URL}${localizedPath}`;
-  const socialImagePath = sources[0]?.coverImage ?? "/logo/logo.webp";
-  const socialImageUrl = new URL(socialImagePath, SITE_URL).toString();
-  const isGif = socialImagePath.toLowerCase().endsWith(".gif");
+  const t = await getTranslations({ locale, namespace: "AnimationSources" });
+  const siteLocale = locale as SiteLocale;
+  const url = getLocalizedUrl(siteLocale, "/animation-sources");
+  const socialImageUrl = getAbsoluteUrl("/og.png");
 
   return {
     title: t("title"),
     description: t("description"),
-    alternates: {
-      canonical: url,
-      languages: {
-        "tr-TR": `${SITE_URL}/animation-sources`,
-        "en-US": `${SITE_URL}/en/animation-sources`,
-        "x-default": `${SITE_URL}/animation-sources`,
-      },
-    },
+    alternates: createAlternates(siteLocale, {
+      tr: "/animation-sources",
+      en: "/animation-sources",
+    }),
     openGraph: {
       title: t("title"),
       description: t("description"),
@@ -45,9 +39,9 @@ export async function generateMetadata({
       images: [
         {
           url: socialImageUrl,
-          type: isGif ? "image/gif" : "image/png",
-          width: isGif ? 480 : 1200,
-          height: isGif ? 480 : 1200,
+          type: "image/png",
+          width: 1200,
+          height: 630,
           alt: t("title"),
         },
       ],
diff --git a/app/[locale]/blog/[slug]/page.tsx b/app/[locale]/blog/[slug]/page.tsx
index ce7bfb2..341cc4e 100644
--- a/app/[locale]/blog/[slug]/page.tsx
+++ b/app/[locale]/blog/[slug]/page.tsx
@@ -43,6 +43,7 @@ export async function generateMetadata({ params }: BlogDetailPageProps): Promise
       description: post.excerpt,
       url,
       type: "article",
+      siteName: "Poyraz Avsever",
       locale: locale === "en" ? "en_US" : "tr_TR",
       alternateLocale:
         translations.length > 1
@@ -64,6 +65,7 @@ export async function generateMetadata({ params }: BlogDetailPageProps): Promise
       title: post.title,
       description: post.excerpt,
       images: [post.coverImage],
+      creator: "@poyrazavsever",
     },
   };
 }
@@ -77,8 +79,7 @@ export default async function BlogDetailPage({ params }: BlogDetailPageProps) {
   }
 
   if (isNewsletterCategory(post.category)) {
-    const localePrefix = locale === "tr" ? "" : `/${locale}`;
-    permanentRedirect(`${localePrefix}/agenda/${post.slug}`);
+    permanentRedirect(`/${locale}/agenda/${post.slug}`);
   }
 
   return (
diff --git a/app/[locale]/layout.tsx b/app/[locale]/layout.tsx
index bbb06b3..f028dd9 100644
--- a/app/[locale]/layout.tsx
+++ b/app/[locale]/layout.tsx
@@ -41,6 +41,17 @@ export async function generateMetadata({
     authors: [{ name: "Poyraz Avsever" }],
     creator: "Poyraz Avsever",
     publisher: "Poyraz Avsever",
+    robots: {
+      index: true,
+      follow: true,
+      googleBot: {
+        index: true,
+        follow: true,
+        "max-image-preview": "large",
+        "max-snippet": -1,
+        "max-video-preview": -1,
+      },
+    },
     openGraph: {
       type: "website",
       locale: locale === "tr" ? "tr_TR" : "en_US",
@@ -49,10 +60,10 @@ export async function generateMetadata({
       description: description,
       images: [
         {
-          url: "/logo/logo.webp",
+          url: "/og.png",
           width: 1200,
-          height: 1200,
-          alt: "Poyraz Avsever Logo",
+          height: 630,
+          alt: t("socialImageAlt"),
         },
       ],
     },
@@ -60,7 +71,7 @@ export async function generateMetadata({
       card: "summary_large_image",
       title: title,
       description: description,
-      images: ["/logo/logo.webp"],
+      images: ["/og.png"],
       creator: "@poyrazavsever",
     },
     keywords: [
diff --git a/lib/seo.ts b/lib/seo.ts
index 3a960f5..bb6dab2 100644
--- a/lib/seo.ts
+++ b/lib/seo.ts
@@ -28,9 +28,9 @@ function normalizePath(path: string) {
 
 export function getLocalizedPath(locale: SiteLocale, path: string) {
   const normalizedPath = normalizePath(path);
-
-  if (locale === "tr") return normalizedPath;
-  return normalizedPath === "/" ? "/en" : `/en${normalizedPath}`;
+  return normalizedPath === "/"
+    ? `/${locale}`
+    : `/${locale}${normalizedPath}`;
 }
 
 export function getAbsoluteUrl(path: string) {
@@ -88,17 +88,27 @@ export function createPageMetadata({
     alternates: createAlternates(locale, { tr: path, en: path }),
     openGraph: {
       type: "website",
+      siteName: "Poyraz Avsever",
       locale: locale === "tr" ? "tr_TR" : "en_US",
       alternateLocale: locale === "tr" ? ["en_US"] : ["tr_TR"],
       url,
       title,
       description,
+      images: [
+        {
+          url: "/og.png",
+          width: 1200,
+          height: 630,
+          alt: "Poyraz Avsever",
+        },
+      ],
     },
     twitter: {
       card: "summary_large_image",
       title,
       description,
       creator: "@poyrazavsever",
+      images: ["/og.png"],
     },
   };
 }
diff --git a/messages/en.json b/messages/en.json
index 7959e6d..7a9dc33 100644
--- a/messages/en.json
+++ b/messages/en.json
@@ -171,7 +171,8 @@
   "Metadata": {
     "title": "Poyraz Avsever | Portfolio",
     "titleTemplate": "%s | Poyraz Avsever",
-    "description": "Poyraz Avsever's personal portfolio website sharing projects, software content, and technical works."
+    "description": "Poyraz Avsever's personal portfolio website sharing projects, software content, and technical works.",
+    "socialImageAlt": "Poyraz Avsever portfolio social preview"
   },
   "SearchCommand": {
     "placeholder": "Search pages and links...",
diff --git a/messages/tr.json b/messages/tr.json
index 9465c5e..bd9d8fa 100644
--- a/messages/tr.json
+++ b/messages/tr.json
@@ -171,7 +171,8 @@
   "Metadata": {
     "title": "Poyraz Avsever | Portfolyo",
     "titleTemplate": "%s | Poyraz Avsever",
-    "description": "Poyraz Avsever'in projelerini, yazılım içeriklerini ve teknik çalışmalarını paylaştığı kişisel portfolyo sitesi."
+    "description": "Poyraz Avsever'in projelerini, yazılım içeriklerini ve teknik çalışmalarını paylaştığı kişisel portfolyo sitesi.",
+    "socialImageAlt": "Poyraz Avsever portfolyo paylaşım görseli"
   },
   "SearchCommand": {
     "placeholder": "Sayfa ve bağlantılarda ara...",
diff --git a/public/og.png b/public/og.png
new file mode 100644
index 0000000..d88b0fb
Binary files /dev/null and b/public/og.png differ