diff --git a/src/MiniDocs/BrAsyncFileWidget.extension.st b/src/MiniDocs/BrAsyncFileWidget.extension.st
new file mode 100644
index 0000000..5d6dd0f
--- /dev/null
+++ b/src/MiniDocs/BrAsyncFileWidget.extension.st
@@ -0,0 +1,23 @@
+Extension { #name : #BrAsyncFileWidget }
+
+{ #category : #'*MiniDocs' }
+BrAsyncFileWidget >> url: aUrl [
+
+	| realUrl imageUrl |
+	realUrl := aUrl asZnUrl.
+
+	realUrl scheme = #file ifTrue: [ 
+		^ self file: realUrl asFileReference ].
+	imageUrl := realUrl.
+	realUrl host = 'www.youtube.com' ifTrue: [ | video |
+		video := LeRawYoutubeReferenceInfo fromYoutubeStringUrl: realUrl asString.
+		imageUrl := (video rawData at: 'thumbnail_url') asUrl.
+	].
+
+	self stencil: [ 
+		(SkiaImage fromForm:
+			 (Form fromBase64String: imageUrl retrieveContents base64Encoded))
+			asElement constraintsDo: [ :c | 
+			c horizontal matchParent.
+			c vertical matchParent ] ]
+]