diff --git a/.env.example b/.env.example
index ede613c..cb35b7f 100644
--- a/.env.example
+++ b/.env.example
@@ -4,8 +4,6 @@ NEXT_PUBLIC_GISCUS_CATEGORY=
 NEXT_PUBLIC_GISCUS_CATEGORY_ID=
 NEXT_PUBLIC_UTTERANCES_REPO=
 NEXT_PUBLIC_DISQUS_SHORTNAME=
-NEXT_PUBLIC_CUSDIS_APPID=
-NEXT_PUBLIC_CUSDIS_HOST=
 NEXT_PUBLIC_COMMENTO_URL=
 
 
diff --git a/components/comments/Cusdis.tsx b/components/comments/Cusdis.tsx
deleted file mode 100644
index 570aa8b..0000000
--- a/components/comments/Cusdis.tsx
+++ /dev/null
@@ -1,41 +0,0 @@
-import React, { useMemo, useState } from 'react';
-
-import siteMetadata from '@/data/siteMetadata';
-import { PostFrontMatter } from 'types/PostFrontMatter';
-import { ReactCusdis } from 'react-cusdis';
-import { useTheme } from 'next-themes';
-
-interface Props {
-  frontMatter: PostFrontMatter;
-}
-
-const Cusdis = ({ frontMatter }: Props) => {
-  const { resolvedTheme } = useTheme();
-  const commentsTheme = useMemo(() => {
-    switch (resolvedTheme) {
-      case 'light':
-      case 'dark':
-        return resolvedTheme;
-      default:
-        return 'auto';
-    }
-  }, [resolvedTheme]);
-  return (
-    <div className="my-2">
-      <ReactCusdis
-        key={commentsTheme}
-        lang={siteMetadata.language?.toLocaleLowerCase()}
-        attrs={{
-          appId: siteMetadata.comment.cusdisConfig.appId,
-          host: siteMetadata.comment.cusdisConfig.host,
-          pageId: frontMatter.slug,
-          pageUrl: window.location.href,
-          pageTitle: frontMatter.title,
-          theme: commentsTheme,
-        }}
-      />
-    </div>
-  );
-};
-
-export default Cusdis;
diff --git a/components/comments/index.tsx b/components/comments/index.tsx
index a0f15b3..673610e 100644
--- a/components/comments/index.tsx
+++ b/components/comments/index.tsx
@@ -26,12 +26,6 @@ const DisqusComponent = dynamic(
   },
   { ssr: false }
 );
-const CusdisComponent = dynamic(
-  () => {
-    return import('@/components/comments/Cusdis');
-  },
-  { ssr: false }
-);
 const CommentoComponent = dynamic(
   () => {
     return import('@/components/comments/Commento');
@@ -67,9 +61,6 @@ const Comments = ({ frontMatter }: Props) => {
       {siteMetadata.comment && siteMetadata.comment.provider === 'disqus' && (
         <DisqusComponent frontMatter={frontMatter} />
       )}
-      {siteMetadata.comment && siteMetadata.comment.provider === 'cusdis' && (
-        <CusdisComponent frontMatter={frontMatter} />
-      )}
       {siteMetadata.comment && siteMetadata.comment.provider === 'commento' && (
         <CommentoComponent frontMatter={frontMatter} />
       )}
diff --git a/data/siteMetadata.js b/data/siteMetadata.js
index 2257207..a02d61b 100644
--- a/data/siteMetadata.js
+++ b/data/siteMetadata.js
@@ -76,10 +76,6 @@ const siteMetadata = {
       // https://help.disqus.com/en/articles/1717111-what-s-a-shortname
       shortname: process.env.NEXT_PUBLIC_DISQUS_SHORTNAME,
     },
-    cusdisConfig: {
-      appId: process.env.NEXT_PUBLIC_CUSDIS_APPID,
-      host: process.env.NEXT_PUBLIC_CUSDIS_HOST,
-    },
     commentoConfig: {
       url: process.env.NEXT_PUBLIC_COMMENTO_URL,
     },
diff --git a/next.config.js b/next.config.js
index 3bbc209..f63ba36 100644
--- a/next.config.js
+++ b/next.config.js
@@ -1,7 +1,6 @@
 const withBundleAnalyzer = require('@next/bundle-analyzer')({
   enabled: process.env.ANALYZE === 'true',
 });
-const withExportImages = require('next-export-optimize-images');
 
 // You might need to insert additional domains in script-src if you are using external services
 const ContentSecurityPolicy = `
diff --git a/package.json b/package.json
index 3896152..2656bec 100644
--- a/package.json
+++ b/package.json
@@ -31,7 +31,6 @@
     "preact": "^10.15.1",
     "react": "18.2.0",
     "react-commento": "^1.0.0",
-    "react-cusdis": "^2.1.3",
     "react-dom": "18.2.0",
     "reading-time": "1.3.0",
     "rehype-autolink-headings": "^6.1.1",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 6f84fcb..3f3fc30 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -59,9 +59,6 @@ dependencies:
   react-commento:
     specifier: ^1.0.0
     version: 1.0.0
-  react-cusdis:
-    specifier: ^2.1.3
-    version: 2.1.3(react-dom@18.2.0)(react@18.2.0)
   react-dom:
     specifier: 18.2.0
     version: 18.2.0(react@18.2.0)
@@ -6926,16 +6923,6 @@ packages:
       react: 16.14.0
     dev: false
 
-  /react-cusdis@2.1.3(react-dom@18.2.0)(react@18.2.0):
-    resolution: {integrity: sha512-fUJOAUY7a3y21fNzlRWUSTr/ZMsejQAYWIWdsNuBPPZHbUrBvke/8Gw4OL5Mlrth7jLw8VTNssX0WBX5/prorQ==}
-    peerDependencies:
-      react: ^17.0.0
-      react-dom: ^17.0.0
-    dependencies:
-      react: 18.2.0
-      react-dom: 18.2.0(react@18.2.0)
-    dev: false
-
   /react-dom@18.2.0(react@18.2.0):
     resolution: {integrity: sha512-6IMTriUmvsjHUjNtEDudZfuDQUoWXVxKHhlEGSk81n4YFS+r/Kl99wXiwlVXtPBtJenozv2P+hxDsw9eA7Xo6g==}
     peerDependencies: