diff --git a/packages/frontend-embed/src/components/EmMfm.ts b/packages/frontend-embed/src/components/EmMfm.ts
index 20c5716436..f89565de42 100644
--- a/packages/frontend-embed/src/components/EmMfm.ts
+++ b/packages/frontend-embed/src/components/EmMfm.ts
@@ -14,7 +14,13 @@ import EmEmoji from '@/components/EmEmoji.vue';
 import EmCustomEmoji from '@/components/EmCustomEmoji.vue';
 import EmA from '@/components/EmA.vue';
 import { host } from '@/config.js';
-import { safeParseFloat } from '@/to-be-shared/safe-parse.js';
+
+function safeParseFloat(str: unknown): number | null {
+	if (typeof str !== 'string' || str === '') return null;
+	const num = parseFloat(str);
+	if (isNaN(num)) return null;
+	return num;
+}
 
 const QUOTE_STYLE = `
 display: block;
diff --git a/packages/frontend-embed/src/components/EmUrl.vue b/packages/frontend-embed/src/components/EmUrl.vue
index b355b82289..6154028641 100644
--- a/packages/frontend-embed/src/components/EmUrl.vue
+++ b/packages/frontend-embed/src/components/EmUrl.vue
@@ -28,7 +28,14 @@ import { defineAsyncComponent, ref } from 'vue';
 import { toUnicode as decodePunycode } from 'punycode/';
 import EmA from './EmA.vue';
 import { url as local } from '@/config.js';
-import { safeURIDecode } from '@/to-be-shared/safe-uri-decode.js';
+
+function safeURIDecode(str: string): string {
+	try {
+		return decodeURIComponent(str);
+	} catch {
+		return str;
+	}
+}
 
 const props = withDefaults(defineProps<{
 	url: string;
diff --git a/packages/frontend-embed/src/to-be-shared/media-proxy.ts b/packages/frontend-embed/src/to-be-shared/media-proxy.ts
index a12871c3b1..facd50ac41 100644
--- a/packages/frontend-embed/src/to-be-shared/media-proxy.ts
+++ b/packages/frontend-embed/src/to-be-shared/media-proxy.ts
@@ -3,7 +3,7 @@
  * SPDX-License-Identifier: AGPL-3.0-only
  */
 
-import { query } from './url.js';
+import { query } from '@@/js/url.js';
 import { url } from '@/config.js';
 import { instance } from '@/instance.js';
 
diff --git a/packages/frontend-embed/src/to-be-shared/safe-parse.ts b/packages/frontend-embed/src/to-be-shared/safe-parse.ts
deleted file mode 100644
index 6bfcef6c36..0000000000
--- a/packages/frontend-embed/src/to-be-shared/safe-parse.ts
+++ /dev/null
@@ -1,11 +0,0 @@
-/*
- * SPDX-FileCopyrightText: syuilo and misskey-project
- * SPDX-License-Identifier: AGPL-3.0-only
- */
-
-export function safeParseFloat(str: unknown): number | null {
-	if (typeof str !== 'string' || str === '') return null;
-	const num = parseFloat(str);
-	if (isNaN(num)) return null;
-	return num;
-}
diff --git a/packages/frontend-embed/src/to-be-shared/safe-uri-decode.ts b/packages/frontend-embed/src/to-be-shared/safe-uri-decode.ts
deleted file mode 100644
index 0edf4e9eba..0000000000
--- a/packages/frontend-embed/src/to-be-shared/safe-uri-decode.ts
+++ /dev/null
@@ -1,12 +0,0 @@
-/*
- * SPDX-FileCopyrightText: syuilo and misskey-project
- * SPDX-License-Identifier: AGPL-3.0-only
- */
-
-export function safeURIDecode(str: string): string {
-	try {
-		return decodeURIComponent(str);
-	} catch {
-		return str;
-	}
-}
diff --git a/packages/frontend-embed/src/to-be-shared/url.ts b/packages/frontend-shared/js/url.ts
similarity index 100%
rename from packages/frontend-embed/src/to-be-shared/url.ts
rename to packages/frontend-shared/js/url.ts
diff --git a/packages/frontend/src/components/MkSignin.vue b/packages/frontend/src/components/MkSignin.vue
index 781145e1bc..dabbe97468 100644
--- a/packages/frontend/src/components/MkSignin.vue
+++ b/packages/frontend/src/components/MkSignin.vue
@@ -66,6 +66,7 @@ import { defineAsyncComponent, ref } from 'vue';
 import { toUnicode } from 'punycode/';
 import * as Misskey from 'misskey-js';
 import { supported as webAuthnSupported, get as webAuthnRequest, parseRequestOptionsFromJSON } from '@github/webauthn-json/browser-ponyfill';
+import { query, extractDomain } from '@@/js/url.js';
 import type { OpenOnRemoteOptions } from '@/scripts/please-login.js';
 import { showSuspendedDialog } from '@/scripts/show-suspended-dialog.js';
 import MkButton from '@/components/MkButton.vue';
@@ -74,7 +75,6 @@ import MkInfo from '@/components/MkInfo.vue';
 import { host as configHost } from '@/config.js';
 import * as os from '@/os.js';
 import { misskeyApi } from '@/scripts/misskey-api.js';
-import { query, extractDomain } from '@/scripts/url.js';
 import { login } from '@/account.js';
 import { i18n } from '@/i18n.js';
 
diff --git a/packages/frontend/src/components/global/MkMisskeyFlavoredMarkdown.ts b/packages/frontend/src/components/global/MkMisskeyFlavoredMarkdown.ts
index 530ae05e51..ea1f3e2988 100644
--- a/packages/frontend/src/components/global/MkMisskeyFlavoredMarkdown.ts
+++ b/packages/frontend/src/components/global/MkMisskeyFlavoredMarkdown.ts
@@ -19,7 +19,13 @@ import MkSparkle from '@/components/MkSparkle.vue';
 import MkA, { MkABehavior } from '@/components/global/MkA.vue';
 import { host } from '@/config.js';
 import { defaultStore } from '@/store.js';
-import { safeParseFloat } from '@/scripts/safe-parse.js';
+
+function safeParseFloat(str: unknown): number | null {
+	if (typeof str !== 'string' || str === '') return null;
+	const num = parseFloat(str);
+	if (isNaN(num)) return null;
+	return num;
+}
 
 const QUOTE_STYLE = `
 display: block;
diff --git a/packages/frontend/src/components/global/MkUrl.vue b/packages/frontend/src/components/global/MkUrl.vue
index d2ddd4aa85..8f4e3b853a 100644
--- a/packages/frontend/src/components/global/MkUrl.vue
+++ b/packages/frontend/src/components/global/MkUrl.vue
@@ -30,10 +30,17 @@ import { toUnicode as decodePunycode } from 'punycode/';
 import { url as local } from '@/config.js';
 import * as os from '@/os.js';
 import { useTooltip } from '@/scripts/use-tooltip.js';
-import { safeURIDecode } from '@/scripts/safe-uri-decode.js';
 import { isEnabledUrlPreview } from '@/instance.js';
 import { MkABehavior } from '@/components/global/MkA.vue';
 
+function safeURIDecode(str: string): string {
+	try {
+		return decodeURIComponent(str);
+	} catch {
+		return str;
+	}
+}
+
 const props = withDefaults(defineProps<{
 	url: string;
 	rel?: string;
diff --git a/packages/frontend/src/nirax.ts b/packages/frontend/src/nirax.ts
index 6a8ea09ed6..25f853453a 100644
--- a/packages/frontend/src/nirax.ts
+++ b/packages/frontend/src/nirax.ts
@@ -7,7 +7,14 @@
 
 import { Component, onMounted, shallowRef, ShallowRef } from 'vue';
 import { EventEmitter } from 'eventemitter3';
-import { safeURIDecode } from '@/scripts/safe-uri-decode.js';
+
+function safeURIDecode(str: string): string {
+	try {
+		return decodeURIComponent(str);
+	} catch {
+		return str;
+	}
+}
 
 interface RouteDefBase {
 	path: string;
diff --git a/packages/frontend/src/scripts/media-proxy.ts b/packages/frontend/src/scripts/media-proxy.ts
index 099a22163a..facd50ac41 100644
--- a/packages/frontend/src/scripts/media-proxy.ts
+++ b/packages/frontend/src/scripts/media-proxy.ts
@@ -3,7 +3,7 @@
  * SPDX-License-Identifier: AGPL-3.0-only
  */
 
-import { query } from '@/scripts/url.js';
+import { query } from '@@/js/url.js';
 import { url } from '@/config.js';
 import { instance } from '@/instance.js';
 
diff --git a/packages/frontend/src/scripts/popout.ts b/packages/frontend/src/scripts/popout.ts
index 1caa2dfc21..ed49611b4f 100644
--- a/packages/frontend/src/scripts/popout.ts
+++ b/packages/frontend/src/scripts/popout.ts
@@ -3,7 +3,7 @@
  * SPDX-License-Identifier: AGPL-3.0-only
  */
 
-import { appendQuery } from './url.js';
+import { appendQuery } from '@@/js/url.js';
 import * as config from '@/config.js';
 
 export function popout(path: string, w?: HTMLElement) {
diff --git a/packages/frontend/src/scripts/safe-parse.ts b/packages/frontend/src/scripts/safe-parse.ts
deleted file mode 100644
index 6bfcef6c36..0000000000
--- a/packages/frontend/src/scripts/safe-parse.ts
+++ /dev/null
@@ -1,11 +0,0 @@
-/*
- * SPDX-FileCopyrightText: syuilo and misskey-project
- * SPDX-License-Identifier: AGPL-3.0-only
- */
-
-export function safeParseFloat(str: unknown): number | null {
-	if (typeof str !== 'string' || str === '') return null;
-	const num = parseFloat(str);
-	if (isNaN(num)) return null;
-	return num;
-}
diff --git a/packages/frontend/src/scripts/safe-uri-decode.ts b/packages/frontend/src/scripts/safe-uri-decode.ts
deleted file mode 100644
index 0edf4e9eba..0000000000
--- a/packages/frontend/src/scripts/safe-uri-decode.ts
+++ /dev/null
@@ -1,12 +0,0 @@
-/*
- * SPDX-FileCopyrightText: syuilo and misskey-project
- * SPDX-License-Identifier: AGPL-3.0-only
- */
-
-export function safeURIDecode(str: string): string {
-	try {
-		return decodeURIComponent(str);
-	} catch {
-		return str;
-	}
-}
diff --git a/packages/frontend/src/scripts/url.ts b/packages/frontend/src/scripts/url.ts
deleted file mode 100644
index 5a8265af9e..0000000000
--- a/packages/frontend/src/scripts/url.ts
+++ /dev/null
@@ -1,28 +0,0 @@
-/*
- * SPDX-FileCopyrightText: syuilo and misskey-project
- * SPDX-License-Identifier: AGPL-3.0-only
- */
-
-/* objを検査して
- * 1. 配列に何も入っていない時はクエリを付けない
- * 2. プロパティがundefinedの時はクエリを付けない
- * （new URLSearchParams(obj)ではそこまで丁寧なことをしてくれない）
- */
-export function query(obj: Record<string, any>): string {
-	const params = Object.entries(obj)
-		.filter(([, v]) => Array.isArray(v) ? v.length : v !== undefined)
-		.reduce((a, [k, v]) => (a[k] = v, a), {} as Record<string, any>);
-
-	return Object.entries(params)
-		.map((p) => `${p[0]}=${encodeURIComponent(p[1])}`)
-		.join('&');
-}
-
-export function appendQuery(url: string, query: string): string {
-	return `${url}${/\?/.test(url) ? url.endsWith('?') ? '' : '&' : '?'}${query}`;
-}
-
-export function extractDomain(url: string) {
-	const match = url.match(/^(?:https?:)?(?:\/\/)?(?:[^@\n]+@)?([^:\/\n]+)/im);
-	return match ? match[1] : null;
-}