diff --git a/boards/models/attachment/viewers.py b/boards/models/attachment/viewers.py
--- a/boards/models/attachment/viewers.py
+++ b/boards/models/attachment/viewers.py
@@ -8,6 +8,8 @@ from boards.abstracts.constants import T
 from boards.settings import SECTION_EXTERNAL
 from boards.utils import get_domain, cached_result, get_extension
 
+URL_IMAGE_PATH = 'images/{}.png'
+
 PROTOCOL_DELIMITER = ':'
 DOMAIN_DELIMITER = '.'
 
@@ -50,7 +52,6 @@ URL_PROTOCOLS = {
 }
 
 CSS_CLASS_IMAGE = 'image'
-CSS_CLASS_THUMB = 'thumb'
 
 ABSTRACT_VIEW = '<div class="image">'\
         '{}'\
@@ -66,7 +67,7 @@ ABSTRACT_FORMAT_VIEW = '<a href="{}">'\
         '</a>'
 VIDEO_FORMAT_VIEW = '<video width="200" height="150" controls src="{}"></video>'
 AUDIO_FORMAT_VIEW = '<audio controls src="{}"></audio>'
-IMAGE_FORMAT_VIEW = '<a class="{}" href="{full}">' \
+IMAGE_FORMAT_VIEW = '<a class="thumb" href="{full}">' \
         '<img class="post-image-preview"' \
         ' src="{}"' \
         ' alt="{}"' \
@@ -87,8 +88,6 @@ def get_viewers():
     return AbstractViewer.__subclasses__()
 
 
-
-
 class AbstractViewer:
     def __init__(self, file, file_type, id, url):
         self.file = file
@@ -134,7 +133,6 @@ class AbstractViewer:
         file_path = finders.find(filename)
         return get_image_dimensions(file_path)
 
-
     @cached_result()
     def file_exists(self, filename):
         return finders.find(filename) is not None
@@ -173,9 +171,6 @@ class ImageViewer(AbstractViewer):
         return file_type in FILE_TYPES_IMAGE
 
     def get_format_view(self):
-        metadata = '{}, {}'.format(self.file.name.split('.')[-1],
-                                   filesizeformat(self.file.size))
-
         try:
             width, height = get_image_dimensions(self.file.path)
         except Exception:
@@ -193,12 +188,11 @@ class ImageViewer(AbstractViewer):
         w, h = THUMB_SIZES[0]
         thumb_url = '%s.%sx%s.%s' % (split[0], w, h, split[1])
 
-        return IMAGE_FORMAT_VIEW.format(CSS_CLASS_THUMB,
-                thumb_url,
-                self.id,
-                str(pre_width),
-                str(pre_height), str(width), str(height),
-                full=self.file.url, image_meta=metadata)
+        return IMAGE_FORMAT_VIEW.format(
+            thumb_url,
+            self.id,
+            pre_width, pre_height, width, height,
+            full=self.file.url)
 
 
 class UrlViewer(AbstractViewer):
@@ -214,7 +208,7 @@ class UrlViewer(AbstractViewer):
 
         domain = get_domain(self.url)
 
-        image_path = 'images/{}.png'.format(self._get_image_name(protocol, domain))
+        image_path = URL_IMAGE_PATH.format(self._get_image_name(protocol, domain))
         image = static(image_path)
         w, h = self.get_static_dimensions(image_path)