Show url as a tooltip of attachment

boards/models/attachment/viewers.py

@@ -80,7 +80,7 b' SVG_FORMAT_VIEW = \'<a class="thumb" href'
         '<img class="post-image-preview" width="200" height="150" src="{}" />'\
         '</a>'
 URL_FORMAT_VIEW = '<a href="{}">' \
-        '<img class="url-image" src="{}" width="{}" height="{}"/>' \
+        '<img class="url-image" src="{}" width="{}" height="{}" title="{}" />' \
         '</a>'
 
 
@@ -212,7 +212,7 b' class UrlViewer(AbstractViewer):'
         image = static(image_path)
         w, h = self.get_static_dimensions(image_path)
 
-        return URL_FORMAT_VIEW.format(self.url, image, w, h)
+        return URL_FORMAT_VIEW.format(self.url, image, w, h, self.url)
 
     def _find_image_for_domains(self, domain):
         """