diff --git a/README.md b/README.md
index 0367205..fddfb65 100644
--- a/README.md
+++ b/README.md
@@ -7,6 +7,9 @@ The code on this repository has to match the WordPress Coding Standards in order
 Every pull request will be checked against WPCS through GitHub Actions.
 
 ## Version History
+### 2.1.1
+* Bugfix - Ignore trailing slash in public url (prevents potential double slash when filtering first path parameter)
+ 
 ### 2.1.0
 * Added - Ignore Path Segments setting to remove specific path segments when building public URLs
 * Enhanced - Public URL functionality to handle complex URL transformations
diff --git a/siteimprove/admin/class-siteimprove-admin.php b/siteimprove/admin/class-siteimprove-admin.php
index 4221ca0..ed6237e 100755
--- a/siteimprove/admin/class-siteimprove-admin.php
+++ b/siteimprove/admin/class-siteimprove-admin.php
@@ -284,7 +284,10 @@ private function siteimprove_add_js( $url, $type ) {
 
 		// Apply public URL transformation if configured.
 		if ( ! empty( $public_url ) ) {
-			$url = "$public_url$path" . ( isset( $parsed_url['query'] ) ? "?$parsed_url[query]" : '' );
+			$public_url = rtrim( $public_url, '/' );
+			$normalized_path = '/' . ltrim( $path, '/' );
+			$query_string = isset( $parsed_url['query'] ) ? '?' . $parsed_url['query'] : '';
+			$url = $public_url . $normalized_path . $query_string;
 		} else {
 			// If no public URL is set, reconstruct the URL with the filtered path.
 			$scheme = isset( $parsed_url['scheme'] ) ? $parsed_url['scheme'] . '://' : '';
diff --git a/siteimprove/readme.txt b/siteimprove/readme.txt
index ff5504c..a575c19 100644
--- a/siteimprove/readme.txt
+++ b/siteimprove/readme.txt
@@ -87,6 +87,9 @@ Please review whether you have JavaScript turned off in your browser. We use Jav
 
 
 == Changelog ==
+= 2.1.1 =
+* Bugfix - Ignore trailing slash in public url (prevents potential double slash when filtering first path parameter)
+
 = 2.1.0 =
 * Added - Ignore Path Segments setting to remove specific path segments when building public URLs
 * Enhanced - Public URL functionality to handle complex URL transformations