diff --git a/src/components/Header.astro b/src/components/Header.astro
index b8925d7..a7290e3 100644
--- a/src/components/Header.astro
+++ b/src/components/Header.astro
@@ -1,4 +1,5 @@
 ---
+import { SITE } from "src/config";
 import Hr from "./Hr.astro";
 import LinkButton from "./LinkButton.astro";
 
@@ -13,7 +14,7 @@ const { activeNav } = Astro.props;
   <a id="skip-to-content" href="#main-content">Skip to content</a>
   <div class="nav-container">
     <div class="top-nav-wrap">
-      <a href="/" class="logo">{import.meta.env.PUBLIC_SITE_TITLE}</a>
+      <a href="/" class="logo">{SITE.title}</a>
       <button class="hamburger-menu" aria-label="menu">
         <div class="icon-container flex">
           <div id="first-line"></div>
diff --git a/src/layouts/AboutLayout.astro b/src/layouts/AboutLayout.astro
index 178baa6..d4dd375 100644
--- a/src/layouts/AboutLayout.astro
+++ b/src/layouts/AboutLayout.astro
@@ -1,4 +1,5 @@
 ---
+import { SITE } from "src/config";
 import Breadcrumbs from "@components/Breadcrumbs.astro";
 import Footer from "@components/Footer.astro";
 import Header from "@components/Header.astro";
@@ -14,7 +15,7 @@ export interface Props {
 const { frontmatter } = Astro.props;
 ---
 
-<Layout title={`${frontmatter.title} | ${import.meta.env.PUBLIC_SITE_TITLE}`}>
+<Layout title={`${frontmatter.title} | ${SITE.title}`}>
   <Header activeNav="about" />
   <Breadcrumbs />
   <main id="main-content">
diff --git a/src/layouts/Posts.astro b/src/layouts/Posts.astro
index 9998c2c..7ab23eb 100644
--- a/src/layouts/Posts.astro
+++ b/src/layouts/Posts.astro
@@ -1,12 +1,13 @@
 ---
+import { SITE } from "src/config";
 import Layout from "@layouts/Layout.astro";
 import Main from "@layouts/Main.astro";
 import Header from "@components/Header.astro";
 import Footer from "@components/Footer.astro";
 import Card from "@components/Card";
 import LinkButton from "@components/LinkButton.astro";
-import type { Frontmatter } from "@utils/types";
 import type { MarkdownInstance } from "astro";
+import type { Frontmatter } from "src/types";
 
 export interface Props {
   pageNum: number;
@@ -20,7 +21,7 @@ const prev = pageNum > 1 ? "" : "disabled";
 const next = pageNum < totalPages ? "" : "disabled";
 ---
 
-<Layout title={`Posts | ${import.meta.env.PUBLIC_SITE_TITLE}`}>
+<Layout title={`Posts | ${SITE.title}`}>
   <Header activeNav="posts" />
   <Main pageTitle="Posts" pageDesc="All the articles I've posted.">
     <ul>
diff --git a/src/pages/404.astro b/src/pages/404.astro
index ce5e6ae..3d5ce80 100644
--- a/src/pages/404.astro
+++ b/src/pages/404.astro
@@ -1,11 +1,12 @@
 ---
+import { SITE } from "src/config";
 import Layout from "@layouts/Layout.astro";
 import Header from "@components/Header.astro";
 import Footer from "@components/Footer.astro";
 import LinkButton from "@components/LinkButton.astro";
 ---
 
-<Layout title={`404 Not Found | ${import.meta.env.PUBLIC_SITE_TITLE}`}>
+<Layout title={`404 Not Found | ${SITE.title}`}>
   <Header />
 
   <main id="main-content">
diff --git a/src/pages/posts/[slug].astro b/src/pages/posts/[slug].astro
index 65973dc..63ff0fe 100644
--- a/src/pages/posts/[slug].astro
+++ b/src/pages/posts/[slug].astro
@@ -1,4 +1,5 @@
 ---
+import { SITE } from "src/config";
 import Posts from "@layouts/Posts.astro";
 import PostDetails from "@layouts/PostDetails.astro";
 import getSortedPosts from "@utils/getSortedPosts";
@@ -59,8 +60,8 @@ const currentPage =
   slug && !isNaN(Number(slug)) && totalPages.includes(Number(slug))
     ? Number(slug)
     : 0;
-const lastPost = currentPage * import.meta.env.PUBLIC_POST_PER_PAGE;
-const startPost = lastPost - import.meta.env.PUBLIC_POST_PER_PAGE;
+const lastPost = currentPage * SITE.postPerPage;
+const startPost = lastPost - SITE.postPerPage;
 
 const paginatedPosts = sortedPosts.slice(startPost, lastPost);
 ---
diff --git a/src/pages/posts/index.astro b/src/pages/posts/index.astro
index 3be9591..7583f76 100644
--- a/src/pages/posts/index.astro
+++ b/src/pages/posts/index.astro
@@ -1,8 +1,9 @@
 ---
+import { SITE } from "src/config";
 import Posts from "@layouts/Posts.astro";
 import getSortedPosts from "@utils/getSortedPosts";
 import getPageNumbers from "@utils/getPageNumbers";
-import type { Frontmatter } from "@utils/types";
+import type { Frontmatter } from "src/types";
 
 const posts = await Astro.glob<Frontmatter>("../../contents/*.md");
 
@@ -10,10 +11,7 @@ const sortedPosts = getSortedPosts(posts);
 
 const totalPages = getPageNumbers(posts.length);
 
-const paginatedPosts = sortedPosts.slice(
-  0,
-  import.meta.env.PUBLIC_POST_PER_PAGE
-);
+const paginatedPosts = sortedPosts.slice(0, SITE.postPerPage);
 ---
 
 <Posts posts={paginatedPosts} pageNum={1} totalPages={totalPages.length} />
diff --git a/src/pages/rss.xml.ts b/src/pages/rss.xml.ts
index 63180a0..3c7bd21 100644
--- a/src/pages/rss.xml.ts
+++ b/src/pages/rss.xml.ts
@@ -1,3 +1,4 @@
+import { SITE } from "src/config";
 import rss from "@astrojs/rss";
 import type { Frontmatter } from "src/types";
 import type { MarkdownInstance } from "astro";
@@ -12,9 +13,9 @@ const posts = Object.values(postImportResult);
 
 export const get = () =>
   rss({
-    title: import.meta.env.PUBLIC_SITE_TITLE,
-    description: import.meta.env.PUBLIC_SITE_DESC,
-    site: import.meta.env.SITE,
+    title: SITE.title,
+    description: SITE.desc,
+    site: SITE.website,
     items: posts.map(({ frontmatter }) => ({
       link: frontmatter.slug,
       title: frontmatter.title,
diff --git a/src/pages/search.astro b/src/pages/search.astro
index 0f7d6c2..9d7c85a 100644
--- a/src/pages/search.astro
+++ b/src/pages/search.astro
@@ -1,10 +1,11 @@
 ---
+import { SITE } from "src/config";
 import Layout from "@layouts/Layout.astro";
 import Main from "@layouts/Main.astro";
 import Header from "@components/Header.astro";
 import Footer from "@components/Footer.astro";
 import Search from "@components/Search";
-import type { Frontmatter } from "@utils/types";
+import type { Frontmatter } from "src/types";
 
 localStorage.setItem("myCat", "Tom");
 
@@ -20,7 +21,7 @@ const searchList = posts.map(({ frontmatter }) => ({
 }));
 ---
 
-<Layout title={`Search | ${import.meta.env.PUBLIC_SITE_TITLE}`}>
+<Layout title={`Search | ${SITE.title}`}>
   <Header activeNav="search" />
   <Main pageTitle="Search" pageDesc="Search any article ...">
     <Search client:load searchList={searchList} />
diff --git a/src/pages/tags/[tag].astro b/src/pages/tags/[tag].astro
index 90c90cf..3eb43e3 100644
--- a/src/pages/tags/[tag].astro
+++ b/src/pages/tags/[tag].astro
@@ -1,4 +1,5 @@
 ---
+import { SITE } from "src/config";
 import Layout from "@layouts/Layout.astro";
 import Main from "@layouts/Main.astro";
 import Header from "@components/Header.astro";
@@ -42,7 +43,7 @@ const posts: MarkdownInstance<Frontmatter>[] = await Astro.glob(
 const tagPosts = getPostsByTag(posts, tag);
 ---
 
-<Layout title={`Tag:${tag} | ${import.meta.env.PUBLIC_SITE_TITLE}`}>
+<Layout title={`Tag:${tag} | ${SITE.title}`}>
   <Header activeNav="tags" />
   <Main
     pageTitle={`Tag:${tag}`}
diff --git a/src/pages/tags/index.astro b/src/pages/tags/index.astro
index 8c37446..176f838 100644
--- a/src/pages/tags/index.astro
+++ b/src/pages/tags/index.astro
@@ -1,18 +1,19 @@
 ---
+import { SITE } from "src/config";
 import Header from "@components/Header.astro";
 import Footer from "@components/Footer.astro";
 import Layout from "@layouts/Layout.astro";
 import Main from "@layouts/Main.astro";
 import Tag from "@components/Tag.astro";
 import getUniqueTags from "@utils/getUniqueTags";
-import type { Frontmatter } from "@utils/types";
+import type { Frontmatter } from "src/types";
 
 const posts = await Astro.glob<Frontmatter>("../../contents/*.md");
 
 let tags = getUniqueTags(posts);
 ---
 
-<Layout title={`Tags | ${import.meta.env.PUBLIC_SITE_TITLE}`}>
+<Layout title={`Tags | ${SITE.title}`}>
   <Header activeNav="tags" />
   <Main pageTitle="Tags" pageDesc="All the tags used in posts.">
     <ul>
diff --git a/src/utils/getPageNumbers.ts b/src/utils/getPageNumbers.ts
index 2968775..862e58b 100644
--- a/src/utils/getPageNumbers.ts
+++ b/src/utils/getPageNumbers.ts
@@ -1,6 +1,7 @@
+import { SITE } from "src/config";
+
 const getPageNumbers = (numberOfPosts: number) => {
-  const numberOfPages =
-    numberOfPosts / Number(import.meta.env.PUBLIC_POST_PER_PAGE);
+  const numberOfPages = numberOfPosts / Number(SITE.postPerPage);
 
   let pageNumbers: number[] = [];
   for (let i = 1; i <= Math.ceil(numberOfPages); i++) {