diff --git a/web/package.json b/web/package.json
index 4dd8d098..b7bf58f7 100644
--- a/web/package.json
+++ b/web/package.json
@@ -24,7 +24,6 @@
     "clsx": "^2.1.1",
     "copy-to-clipboard": "^3.3.3",
     "dayjs": "^1.11.13",
-    "dompurify": "^3.1.7",
     "fuse.js": "^7.0.0",
     "highlight.js": "^11.10.0",
     "i18next": "^23.16.3",
@@ -55,7 +54,6 @@
     "@bufbuild/protobuf": "^2.2.2",
     "@trivago/prettier-plugin-sort-imports": "^4.3.0",
     "@types/d3": "^7.4.3",
-    "@types/dompurify": "^3.0.5",
     "@types/katex": "^0.16.7",
     "@types/leaflet": "^1.9.14",
     "@types/lodash-es": "^4.17.12",
diff --git a/web/pnpm-lock.yaml b/web/pnpm-lock.yaml
index 329b0347..170ce57f 100644
--- a/web/pnpm-lock.yaml
+++ b/web/pnpm-lock.yaml
@@ -53,9 +53,6 @@ importers:
       dayjs:
         specifier: ^1.11.13
         version: 1.11.13
-      dompurify:
-        specifier: ^3.1.7
-        version: 3.1.7
       fuse.js:
         specifier: ^7.0.0
         version: 7.0.0
@@ -141,9 +138,6 @@ importers:
       '@types/d3':
         specifier: ^7.4.3
         version: 7.4.3
-      '@types/dompurify':
-        specifier: ^3.0.5
-        version: 3.0.5
       '@types/katex':
         specifier: ^0.16.7
         version: 0.16.7
@@ -1294,9 +1288,6 @@ packages:
   '@types/d3@7.4.3':
     resolution: {integrity: sha512-lZXZ9ckh5R8uiFVt8ogUNf+pIrK4EsWrx2Np75WvF/eTpJ0FMHNhjXk8CKEx/+gpHbNQyJWehbFaTvqmHWB3ww==}
 
-  '@types/dompurify@3.0.5':
-    resolution: {integrity: sha512-1Wg0g3BtQF7sSb27fJQAKck1HECM6zV1EB66j8JH9i3LCjYabJa0FSdiSgsD5K/RbrsR0SiraKacLB+T8ZVYAg==}
-
   '@types/estree@1.0.6':
     resolution: {integrity: sha512-AYnb1nQyY49te+VRAVgmzfcgjYS91mY5P0TKUDCLEM+gNnA+3T6rWITXRLYCpahpqSQbN5cE+gHpnPyXjHWxcw==}
 
@@ -1339,9 +1330,6 @@ packages:
   '@types/textarea-caret@3.0.3':
     resolution: {integrity: sha512-bsA9GdXV1wQsXyDjS5+A+czz8IAR3haH5DU+KctIoXbzobRL2NOiwF/+EbB7pofAyudMytLj4ihPtbmbJT8FWw==}
 
-  '@types/trusted-types@2.0.7':
-    resolution: {integrity: sha512-ScaPdn1dQczgbl0QFTeTOmVHFULt394XJgOQNoyVhZ6r2vLnMLJfBPd53SB52T/3G36VI1/g2MZaX0cwDuXsfw==}
-
   '@types/use-sync-external-store@0.0.3':
     resolution: {integrity: sha512-EwmlvuaxPNej9+T4v5AuBPJa2x2UOJVdjCtDHgcDqitUeOtjnJKJ+apYjVcAoBEMjKW1VVFGZLUb5+qqa09XFA==}
 
@@ -1896,9 +1884,6 @@ packages:
   dompurify@3.1.6:
     resolution: {integrity: sha512-cTOAhc36AalkjtBpfG6O8JimdTMWNXjiePT2xQH/ppBGi/4uIpmj8eKyIkMJErXWARyINV/sB38yf8JCLF5pbQ==}
 
-  dompurify@3.1.7:
-    resolution: {integrity: sha512-VaTstWtsneJY8xzy7DekmYWEOZcmzIe3Qb3zPd4STve1OBTa+e+WmS1ITQec1fZYXI3HCsOZZiSMpG6oxoWMWQ==}
-
   eastasianwidth@0.2.0:
     resolution: {integrity: sha512-I88TYZWc9XiYHRQ4/3c5rjjfgkjhLyW2luGIheGERbNQ6OY7yTybanSpDXZa8y7VUP9YmDcYa+eyq4ca7iLqWA==}
 
@@ -4513,10 +4498,6 @@ snapshots:
       '@types/d3-transition': 3.0.9
       '@types/d3-zoom': 3.0.8
 
-  '@types/dompurify@3.0.5':
-    dependencies:
-      '@types/trusted-types': 2.0.7
-
   '@types/estree@1.0.6': {}
 
   '@types/geojson@7946.0.14': {}
@@ -4556,8 +4537,6 @@ snapshots:
 
   '@types/textarea-caret@3.0.3': {}
 
-  '@types/trusted-types@2.0.7': {}
-
   '@types/use-sync-external-store@0.0.3': {}
 
   '@types/uuid@10.0.0': {}
@@ -5193,8 +5172,6 @@ snapshots:
 
   dompurify@3.1.6: {}
 
-  dompurify@3.1.7: {}
-
   eastasianwidth@0.2.0: {}
 
   electron-to-chromium@1.5.45: {}
diff --git a/web/src/components/MemoContent/CodeBlock.tsx b/web/src/components/MemoContent/CodeBlock.tsx
index af30dd72..f64f1c10 100644
--- a/web/src/components/MemoContent/CodeBlock.tsx
+++ b/web/src/components/MemoContent/CodeBlock.tsx
@@ -1,6 +1,5 @@
 import clsx from "clsx";
 import copy from "copy-to-clipboard";
-import DOMPurify from "dompurify";
 import hljs from "highlight.js";
 import { CopyIcon } from "lucide-react";
 import { useCallback, useMemo } from "react";
@@ -24,15 +23,11 @@ const CodeBlock: React.FC<Props> = ({ language, content }: Props) => {
 
   // Users can set Markdown code blocks as `__html` to render HTML directly.
   if (formatedLanguage === SpecialLanguage.HTML) {
-    const purify = DOMPurify(window);
     return (
       <div
         className="w-full overflow-auto !my-2"
         dangerouslySetInnerHTML={{
-          __html: purify.sanitize(content, {
-            ALLOWED_TAGS: ["iframe"],
-            ADD_ATTR: ["allow", "allowfullscreen", "frameborder", "scrolling"],
-          }),
+          __html: content,
         }}
       />
     );