diff --git a/includes/class-helpers.php b/includes/class-helpers.php
index 2997db0..e43cc15 100644
--- a/includes/class-helpers.php
+++ b/includes/class-helpers.php
@@ -82,4 +82,20 @@ final class Helpers
         $value = \get_field($selector, $post_id, $format_value);
         return is_string($value) ? \do_shortcode($value) : $value;
     }
+
+    public static function remove_domain_link(string $url): string
+    {
+        $parsed = parse_url($url);
+        if ($parsed === false || empty($parsed['scheme'])) {
+            return $url;
+        }
+        $scheme = strtolower((string) $parsed['scheme']);
+        if ($scheme !== 'http' && $scheme !== 'https') {
+            return $url;
+        }
+        $path = $parsed['path'] ?? '';
+        $query = isset($parsed['query']) ? '?' . $parsed['query'] : '';
+        $fragment = isset($parsed['fragment']) ? '#' . $parsed['fragment'] : '';
+        return $path . $query . $fragment;
+    }
 }
diff --git a/tests/HelpersTest.php b/tests/HelpersTest.php
index 75277a1..e9cb01e 100644
--- a/tests/HelpersTest.php
+++ b/tests/HelpersTest.php
@@ -188,4 +188,13 @@ final class HelpersTest extends TestCase
 
         self::assertNull(Helpers::alt_get_field('anything'));
     }
+
+    public function test_remove_domain_link_handles_various_url_shapes(): void
+    {
+        self::assertSame('/foo/bar/', Helpers::remove_domain_link('https://site.com/foo/bar/'));
+        self::assertSame('/foo?q=1#a', Helpers::remove_domain_link('http://site.com/foo?q=1#a'));
+        self::assertSame('/foo/', Helpers::remove_domain_link('/foo/'));
+        self::assertSame('mailto:x@y.com', Helpers::remove_domain_link('mailto:x@y.com'));
+        self::assertSame('not a url', Helpers::remove_domain_link('not a url'));
+    }
 }