diff --git a/astro.config.ts b/astro.config.ts
index 57b7380..4858d39 100644
--- a/astro.config.ts
+++ b/astro.config.ts
@@ -7,7 +7,7 @@ import remarkLinkCard from 'remark-link-card'
 import RemarkLinkRewrite, {
   type RemarkLinkRewriteOptions,
 } from 'remark-link-rewrite'
-import { formatUrl } from './src/utils/validateUrl'
+import { getFormatUrl } from './src/utils/validateUrl'
 
 const { SITE_URL } = loadEnv(process.env.NODE_ENV!, process.cwd(), '')
 
@@ -43,7 +43,7 @@ export default defineConfig({
       remarkLinkCard,
       [
         RemarkLinkRewrite,
-        { replacer: formatUrl } satisfies RemarkLinkRewriteOptions,
+        { replacer: getFormatUrl(SITE_URL) } satisfies RemarkLinkRewriteOptions,
       ],
     ],
   },
diff --git a/src/components/activity/EventsSection.astro b/src/components/activity/EventsSection.astro
index 10f58c5..1e7bc57 100644
--- a/src/components/activity/EventsSection.astro
+++ b/src/components/activity/EventsSection.astro
@@ -26,7 +26,7 @@ export const items: Item[] = [
     image: welcomeImage,
     description:
       'プログラミングの基礎、機械学習、3Dモデリングなど様々なテーマで、数カ月間にわたり講習会が開催されます。新歓イベントの一環として開催しており、どなたでも参加できます。※画像は2022年度のものです。',
-    link: { href: '/workshop', text: '講習会について詳しく' },
+    link: { href: '/workshop/', text: '講習会について詳しく' },
   },
   {
     title: '5月 いちょう祭',
diff --git a/src/components/common/InlineLink.astro b/src/components/common/InlineLink.astro
index 1d255be..3abff84 100644
--- a/src/components/common/InlineLink.astro
+++ b/src/components/common/InlineLink.astro
@@ -1,18 +1,11 @@
 ---
-import { formatUrl } from '@/utils/validateUrl'
 import type { HTMLAttributes } from 'astro/types'
 
 type Props = Omit<HTMLAttributes<'a'>, 'slot'>
 
 const { class: className, href, ...attrs } = Astro.props
-
-const formattedHref = href && formatUrl(href)
 ---
 
-<a
-  href={formattedHref}
-  class:list={['text-blue-600 underline', className]}
-  {...attrs}
->
+<a href={href} class:list={['text-blue-600 underline', className]} {...attrs}>
   <slot />
 </a>
diff --git a/src/components/faq/FaqSection.astro b/src/components/faq/FaqSection.astro
index 0a92a3f..30df358 100644
--- a/src/components/faq/FaqSection.astro
+++ b/src/components/faq/FaqSection.astro
@@ -35,7 +35,7 @@ import FaqCard from './FaqCard.astro'
           普段はDiscordサーバーで雑談をしているほか、月に一度週末にオンラインで集まって部会を開催しています。また、大阪大学の大学祭であるいちょう祭（5月）とまちかね祭（11月）への出展は部員全員で協力して行います。
         </p>
         <p>
-          詳しくは<InlineLink href="/activity">
+          詳しくは<InlineLink href="/activity/">
             活動紹介
           </InlineLink>をご覧ください。
         </p>
diff --git a/src/components/index/activity/ActivitySection.astro b/src/components/index/activity/ActivitySection.astro
index 5b4b18b..0b62ca1 100644
--- a/src/components/index/activity/ActivitySection.astro
+++ b/src/components/index/activity/ActivitySection.astro
@@ -20,7 +20,7 @@ const items: Item[] = [
     image: welcomeImage,
     description:
       'プログラミングの基礎、機械学習、3Dモデリングなど様々なテーマで、数カ月間にわたり講習会が開催されます。新歓イベントの一環として開催しており、どなたでも参加できます。※画像は2022年度のものです。',
-    link: { href: '/workshop', text: '講習会について詳しく' },
+    link: { href: '/workshop/', text: '講習会について詳しく' },
   },
   {
     title: '5月 いちょう祭',
@@ -52,7 +52,7 @@ const items: Item[] = [
       }
     </ul>
     <div class="flex justify-center">
-      <LinkButton href="/activity">活動紹介について詳しく</LinkButton>
+      <LinkButton href="/activity/">活動紹介について詳しく</LinkButton>
     </div>
   </div>
 </Section>
diff --git a/src/components/index/faq/FaqSection.astro b/src/components/index/faq/FaqSection.astro
index 5f5bcc3..7458e58 100644
--- a/src/components/index/faq/FaqSection.astro
+++ b/src/components/index/faq/FaqSection.astro
@@ -10,7 +10,7 @@ import LinkButton from '@/components/common/button/LinkButton.astro'
       「部室はあるの？」「活動には必ず参加しないといけないの？」「部費はかかるの？」など、よくある質問はこちらから。
     </div>
     <div class="flex justify-center">
-      <LinkButton href="/faq">FAQを確認する</LinkButton>
+      <LinkButton href="/faq/">FAQを確認する</LinkButton>
     </div>
   </div>
 </Section>
diff --git a/src/components/index/join/JoinSection.astro b/src/components/index/join/JoinSection.astro
index c490ee0..386b27b 100644
--- a/src/components/index/join/JoinSection.astro
+++ b/src/components/index/join/JoinSection.astro
@@ -11,7 +11,7 @@ import LinkButton from '@/components/common/button/LinkButton.astro'
       まずは公開サーバーに参加し、部内の雰囲気を感じてみませんか？
     </div>
     <div class="flex justify-center">
-      <LinkButton href="/join" variant="white">Join OUCC!</LinkButton>
+      <LinkButton href="/join/" variant="white">Join OUCC!</LinkButton>
     </div>
   </div>
 </Section>
diff --git a/src/components/layout/Footer.astro b/src/components/layout/Footer.astro
index 01f9a61..7d0e5ff 100644
--- a/src/components/layout/Footer.astro
+++ b/src/components/layout/Footer.astro
@@ -11,6 +11,6 @@ import FooterLink from './FooterLink.astro'
   </div>
   <div class="flex flex-wrap items-center justify-center gap-4 px-4">
     <FooterLink to="/oucc-rules.pdf">規約</FooterLink>
-    <FooterLink to="/privacy">プライバシーポリシー</FooterLink>
+    <FooterLink to="/privacy/">プライバシーポリシー</FooterLink>
   </div>
 </footer>
diff --git a/src/components/layout/nav/BlogNav.astro b/src/components/layout/nav/BlogNav.astro
index 800c734..dcdc9f6 100644
--- a/src/components/layout/nav/BlogNav.astro
+++ b/src/components/layout/nav/BlogNav.astro
@@ -1,7 +1,6 @@
 ---
 import { BlogCategoryMapping } from '@/content/config'
 
-import { validateUrl } from '@/utils/validateUrl'
 const current = Astro.url.pathname
 
 const navList = [
@@ -21,8 +20,6 @@ const navList = [
     isHere: '/blog/tags/' === current,
   },
 ] as const satisfies { target: string; title: string; isHere: boolean }[]
-
-for (const { target } of navList) validateUrl(target)
 ---
 
 <div class="flex flex-nowrap gap-3 px-9 font-sans text-lg font-medium">
diff --git a/src/components/layout/nav/Header.astro b/src/components/layout/nav/Header.astro
index 5ee7970..01f5169 100644
--- a/src/components/layout/nav/Header.astro
+++ b/src/components/layout/nav/Header.astro
@@ -4,7 +4,6 @@ import Image from '@/components/common/Image.astro'
 import ouccImage from '@/assets/oucc.svg'
 import LinkButton from '@/components/common/button/LinkButton.astro'
 import Navigation from './Navigation.astro'
-import { formatUrl } from '@/utils/validateUrl'
 
 interface Props {
   showJoinLink?: boolean
@@ -19,8 +18,6 @@ const {
   rootPath = '/',
   headerTitle,
 } = Astro.props
-
-const formattedRootPath = formatUrl(rootPath)
 ---
 
 <header
@@ -42,7 +39,7 @@ const formattedRootPath = formatUrl(rootPath)
         class="w-5"
       />
     </button>
-    <a href={formattedRootPath} class="flex basis-0 items-center">
+    <a href={rootPath} class="flex basis-0 items-center">
       <span class="aspect-square h-full">
         <Image
           src={ouccImage}
@@ -55,7 +52,7 @@ const formattedRootPath = formatUrl(rootPath)
     </a>
   </div>
   <div class="flex shrink-0 flex-col justify-center">
-    {showJoinLink && <LinkButton href="/join">Join OUCC!</LinkButton>}
+    {showJoinLink && <LinkButton href="/join/">Join OUCC!</LinkButton>}
   </div>
   {
     /**
diff --git a/src/components/layout/nav/Navigation.astro b/src/components/layout/nav/Navigation.astro
index 81cc8f7..bbe1178 100644
--- a/src/components/layout/nav/Navigation.astro
+++ b/src/components/layout/nav/Navigation.astro
@@ -11,12 +11,12 @@ import DrWani from './DrWani.astro'
   </div>
   <ul class="flex flex-col text-center">
     <NavigationListItem to="/">トップページ</NavigationListItem>
-    <NavigationListItem to="/join">Join OUCC!</NavigationListItem>
-    <NavigationListItem to="/activity">活動紹介</NavigationListItem>
-    <NavigationListItem to="/workshop">講習会</NavigationListItem>
-    <NavigationListItem to="/faq">FAQ</NavigationListItem>
-    <NavigationListItem to="/contact">お問い合わせ</NavigationListItem>
-    <NavigationListItem to="/blog">ブログ</NavigationListItem>
+    <NavigationListItem to="/join/">Join OUCC!</NavigationListItem>
+    <NavigationListItem to="/activity/">活動紹介</NavigationListItem>
+    <NavigationListItem to="/workshop/">講習会</NavigationListItem>
+    <NavigationListItem to="/faq/">FAQ</NavigationListItem>
+    <NavigationListItem to="/contact/">お問い合わせ</NavigationListItem>
+    <NavigationListItem to="/blog/">ブログ</NavigationListItem>
     <NavigationListItem to="https://twitter.com/OUCC" targetBlank>
       X (旧Twitter)
     </NavigationListItem>
diff --git a/src/components/layout/nav/NavigationListItem.astro b/src/components/layout/nav/NavigationListItem.astro
index 79a9d5b..0c6cbb4 100644
--- a/src/components/layout/nav/NavigationListItem.astro
+++ b/src/components/layout/nav/NavigationListItem.astro
@@ -1,18 +1,15 @@
 ---
-import { formatUrl } from '@/utils/validateUrl'
 interface Props {
   to: string
   targetBlank?: boolean
 }
 
 const { to, targetBlank } = Astro.props
-
-const formattedTo = formatUrl(to)
 ---
 
 <li class="border-t last:border-b">
   <a
-    href={formattedTo}
+    href={to}
     target={targetBlank ? '_blank' : undefined}
     class:list={[
       'block bg-white p-4 font-bold',
diff --git a/src/layouts/BlogLayout.astro b/src/layouts/BlogLayout.astro
index b44f1d2..ea2cbbe 100644
--- a/src/layouts/BlogLayout.astro
+++ b/src/layouts/BlogLayout.astro
@@ -34,7 +34,7 @@ const ogImageUrl = new URL(image, Astro.site).toString()
     showJoinLink={false}
     isSticky={false}
     headerTitle="BLOG"
-    rootPath="/blog"
+    rootPath="/blog/"
   />
   <BlogNav />
   <div class="bg-dot bg-dot-secondary flex-grow">
diff --git a/src/utils/validateUrl.ts b/src/utils/validateUrl.ts
index fa7e854..8fd47ca 100644
--- a/src/utils/validateUrl.ts
+++ b/src/utils/validateUrl.ts
@@ -1,32 +1,21 @@
-/** 対象のURL */
-const pattern = new RegExp(
-  `^(${import.meta.env.SITE.replaceAll('.', '\\.')}|/)`,
-)
-
 /**
  * oucc.orgに向けたURLの末尾に/をつけます
  */
-export function formatUrl(path: string | URL): string {
-  if (path instanceof URL) return formatUrl(path.href)
-
-  if (!path.match(pattern)) return path
-
-  const [url, hash] = path.split('#')
+export function getFormatUrl(base: string = import.meta.env.SITE) {
+  /** 対象のURL */
+  const pattern = new RegExp(`^(${base.replaceAll('.', '\\.')}|/)`)
 
-  if (url!.endsWith('/')) return path
-  return hash ? `${url}/#${hash}` : url + '/'
-}
+  return function formatUrl(path: string | URL): string {
+    if (path instanceof URL) return formatUrl(path.href)
 
-/**
- * oucc.orgに向けたURLの末尾に/がない場合、例外を発生させます
- * @throws {Error} - URLが条件を満たさない場合に発生する例外
- */
-export function validateUrl(path: string): void {
-  if (!path.match(pattern)) return
+    if (!path.match(pattern)) return path
 
-  const [url] = path.split('#')
+    const [url, hash] = path.split('#')
 
-  if (url!.endsWith('/')) return
+    if (url!.endsWith('/')) return path
+    // ファイル拡張子
+    if (url!.match(/\.(a-zA-Z0-9)+$/)) return path
 
-  throw new Error(`URLの末尾には/が必要です。 url:${url}`)
+    return hash ? `${url}/#${hash}` : url + '/'
+  }
 }