diff --git a/src/App/BaseURL.php b/src/App/BaseURL.php
index 403030684..cc20343d1 100644
--- a/src/App/BaseURL.php
+++ b/src/App/BaseURL.php
@@ -127,4 +127,14 @@ class BaseURL extends Uri implements UriInterface
 		$redirectTo = $this->__toString() . '/' . ltrim($toUrl, '/');
 		System::externalRedirect($redirectTo);
 	}
+
+	public function isLocalUrl(string $url): bool
+	{
+		return strpos(Strings::normaliseLink($url), Strings::normaliseLink((string)$this)) === 0;
+	}
+
+	public function isLocalUri(UriInterface $uri): bool
+	{
+		return $this->isLocalUrl((string)$uri);
+	}
 }
diff --git a/src/Util/Network.php b/src/Util/Network.php
index f7ceab543..495510189 100644
--- a/src/Util/Network.php
+++ b/src/Util/Network.php
@@ -640,10 +640,11 @@ class Network
 	 * @param string $url
 	 *
 	 * @return bool
+	 * @deprecated since 2023.09, please use BaseUrl->isLocalUrl or BaseUrl->isLocalUri instead.
 	 */
 	public static function isLocalLink(string $url): bool
 	{
-		return (strpos(Strings::normaliseLink($url), Strings::normaliseLink(DI::baseUrl())) !== false);
+		return DI::baseUrl()->isLocalUrl($url);
 	}
 
 	/**