diff --git a/Classes/ViewHelpers/StencilViewHelper.php b/Classes/ViewHelpers/StencilViewHelper.php
index 0110d44..fb3f9c9 100644
--- a/Classes/ViewHelpers/StencilViewHelper.php
+++ b/Classes/ViewHelpers/StencilViewHelper.php
@@ -107,6 +107,10 @@ protected function getUrl(string $url): ?string
 
     private function getAbsoluteWebPath(string $file, bool $cacheBreaker = false): string
     {
+        if (PathUtility::hasProtocolAndScheme($file)) {
+            return $file;
+        }
+
         if (PathUtility::isExtensionPath($file)) {
             $file = Environment::getPublicPath() . '/' . PathUtility::getPublicResourceWebPath($file, false);
             // as the path is now absolute, make it "relative" to the current script to stay compatible