diff --git a/packages/frontend/src/components/MkExtensionInstaller.vue b/packages/frontend/src/components/MkExtensionInstaller.vue
index d1cb234e91..0f7acd69e7 100644
--- a/packages/frontend/src/components/MkExtensionInstaller.vue
+++ b/packages/frontend/src/components/MkExtensionInstaller.vue
@@ -56,23 +56,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 			</MkFolder>
 		</div>
 	</FormSection>
-	<FormSection v-if="url || hashVerified">
-		<template #label>{{ i18n.ts._externalResourceInstaller._vendorInfo.title }}</template>
-		<div class="_gaps_s">
-			<MkKeyValue v-if="url">
-				<template #key>{{ i18n.ts._externalResourceInstaller._vendorInfo.endpoint }}</template>
-				<template #value><MkUrl :url="url" :showUrlPreview="false"></MkUrl></template>
-			</MkKeyValue>
-			<MkKeyValue v-if="hashVerified">
-				<!-- hashVerifiedがfalseでも失敗表示は出ないので、エラー表示は別で作成すること -->
-				<!-- そもそもこのコンポーネントはハッシュ検証が必要であれば事前に済ませていることを前提としている -->
-				<template #key>{{ i18n.ts._externalResourceInstaller._vendorInfo.hashVerify }}</template>
-				<template #value>
-					<i class="ti ti-check" style="color: var(--accent)"></i>
-				</template>
-			</MkKeyValue>
-		</div>
-	</FormSection>
+	<slot name="additionalInfo"/>
 	<div class="_buttonsCenter">
 		<MkButton primary @click="emits('confirm')"><i class="ti ti-check"></i> {{ i18n.ts.install }}</MkButton>
 	</div>
@@ -107,7 +91,6 @@ import MkButton from '@/components/MkButton.vue';
 import FormSection from '@/components/form/section.vue';
 import FormSplit from '@/components/form/split.vue';
 import MkCode from '@/components/MkCode.vue';
-import MkUrl from '@/components/global/MkUrl.vue';
 import MkInfo from '@/components/MkInfo.vue';
 import MkFolder from '@/components/MkFolder.vue';
 import MkKeyValue from '@/components/MkKeyValue.vue';
@@ -118,8 +101,6 @@ const isTheme = computed(() => props.extension.type === 'theme');
 
 const props = defineProps<{
 	extension: Extension;
-	url?: string;
-	hashVerified?: boolean; // true: 検証成功表示 false/undefined: 検証不要、表示なし
 }>();
 
 const emits = defineEmits<{
diff --git a/packages/frontend/src/pages/install-extensions.vue b/packages/frontend/src/pages/install-extensions.vue
index 898c7f58b9..83f16fce68 100644
--- a/packages/frontend/src/pages/install-extensions.vue
+++ b/packages/frontend/src/pages/install-extensions.vue
@@ -8,8 +8,26 @@ SPDX-License-Identifier: AGPL-3.0-only
 	<template #header><MkPageHeader :actions="headerActions" :tabs="headerTabs"/></template>
 	<MkSpacer :contentMax="500">
 		<MkLoading v-if="uiPhase === 'fetching'"/>
-		<!-- この画面が表示されている時点でハッシュの検証には成功している -->
-		<MkExtensionInstaller v-else-if="uiPhase === 'confirm' && data" :extension="data" :url="url" hashVerified @confirm="install()"/>
+		<MkExtensionInstaller v-else-if="uiPhase === 'confirm' && data" :extension="data" @confirm="install()">
+			<template #additionalInfo>
+				<FormSection>
+					<template #label>{{ i18n.ts._externalResourceInstaller._vendorInfo.title }}</template>
+					<div class="_gaps_s">
+						<MkKeyValue>
+							<template #key>{{ i18n.ts._externalResourceInstaller._vendorInfo.endpoint }}</template>
+							<template #value><MkUrl :url="url" :showUrlPreview="false"></MkUrl></template>
+						</MkKeyValue>
+						<MkKeyValue>
+							<template #key>{{ i18n.ts._externalResourceInstaller._vendorInfo.hashVerify }}</template>
+							<template #value>
+								<!-- この画面が出ている時点でハッシュの検証には成功している -->
+								<i class="ti ti-check" style="color: var(--accent)"></i>
+							</template>
+						</MkKeyValue>
+					</div>
+				</FormSection>
+			</template>
+		</MkExtensionInstaller>
 		<div v-else-if="uiPhase === 'error'" class="_gaps_m" :class="[$style.extInstallerRoot, $style.error]">
 			<div :class="$style.extInstallerIconWrapper">
 				<i class="ti ti-circle-x"></i>
@@ -30,6 +48,9 @@ import { ref, computed, onActivated, onDeactivated, nextTick } from 'vue';
 import MkLoading from '@/components/global/MkLoading.vue';
 import MkExtensionInstaller, { type Extension } from '@/components/MkExtensionInstaller.vue';
 import MkButton from '@/components/MkButton.vue';
+import MkKeyValue from '@/components/MkKeyValue.vue';
+import MkUrl from '@/components/global/MkUrl.vue';
+import FormSection from '@/components/form/section.vue';
 import * as os from '@/os.js';
 import { misskeyApi } from '@/scripts/misskey-api.js';
 import { AiScriptPluginMeta, parsePluginMeta, installPlugin } from '@/scripts/install-plugin.js';