diff --git a/packages/frontend/src/utility/extract-preview-urls.ts b/packages/frontend/src/utility/extract-preview-urls.ts
index 5fc9c87a32..e3bd62c993 100644
--- a/packages/frontend/src/utility/extract-preview-urls.ts
+++ b/packages/frontend/src/utility/extract-preview-urls.ts
@@ -3,35 +3,18 @@
  * SPDX-License-Identifier: AGPL-3.0-only
  */
 
-import * as config from '@@/js/config.js';
 import type * as Misskey from 'misskey-js';
 import type * as mfm from '@transfem-org/sfm-js';
 import { extractUrlFromMfm } from '@/utility/extract-url-from-mfm.js';
+import { getNoteUrls } from '@/utility/getNoteUrls';
 
 /**
  * Extracts all previewable URLs from a note.
  */
 export function extractPreviewUrls(note: Misskey.entities.Note, contents: mfm.MfmNode[]): string[] {
 	const links = extractUrlFromMfm(contents);
-	return links.filter(url =>
-		// Remote note
-		url !== note.url &&
-		url !== note.uri &&
-		// Local note
-		url !== `${config.url}/notes/${note.id}` &&
-		// Remote reply
-		url !== note.reply?.url &&
-		url !== note.reply?.uri &&
-		// Local reply
-		url !== `${config.url}/notes/${note.reply?.id}` &&
-		// Remote renote or quote
-		url !== note.renote?.url &&
-		url !== note.renote?.uri &&
-		// Local renote or quote
-		url !== `${config.url}/notes/${note.renote?.id}` &&
-		// Remote renote *of* a quote
-		url !== note.renote?.renote?.url &&
-		url !== note.renote?.renote?.uri &&
-		// Local renote *of* a quote
-		url !== `${config.url}/notes/${note.renote?.renote?.id}`);
+	if (links.length < 0) return [];
+
+	const self = getNoteUrls(note);
+	return links.filter(url => !self.includes(url));
 }
diff --git a/packages/frontend/src/utility/getNoteUrls.ts b/packages/frontend/src/utility/getNoteUrls.ts
new file mode 100644
index 0000000000..efd014cbf0
--- /dev/null
+++ b/packages/frontend/src/utility/getNoteUrls.ts
@@ -0,0 +1,44 @@
+/*
+ * SPDX-FileCopyrightText: hazelnoot and other Sharkey contributors
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import * as config from '@@/js/config.js';
+import type * as Misskey from 'misskey-js';
+
+export function getNoteUrls(note: Misskey.entities.Note): string[] {
+	const urls: string[] = [
+		// Any note
+		`${config.url}/notes/${note.id}`,
+	];
+
+	// Remote note
+	if (note.url) urls.push(note.url);
+	if (note.uri) urls.push(note.uri);
+
+	if (note.reply) {
+		// Any Reply
+		urls.push(`${config.url}/notes/${note.reply.id}`);
+		// Remote Reply
+		if (note.reply.url) urls.push(note.reply.url);
+		if (note.reply.uri) urls.push(note.reply.uri);
+	}
+
+	if (note.renote) {
+		// Any Renote
+		urls.push(`${config.url}/notes/${note.renote.id}`);
+		// Remote Renote
+		if (note.renote.url) urls.push(note.renote.url);
+		if (note.renote.uri) urls.push(note.renote.uri);
+	}
+
+	if (note.renote?.renote) {
+		// Any Quote
+		urls.push(`${config.url}/notes/${note.renote.renote.id}`);
+		// Remote Quote
+		if (note.renote.renote.url) urls.push(note.renote.renote.url);
+		if (note.renote.renote.uri) urls.push(note.renote.renote.uri);
+	}
+
+	return urls;
+}