diff --git a/themis/fields/previewdoc_display.pt b/themis/fields/previewdoc_display.pt
index d8a5835..519746c 100644
--- a/themis/fields/previewdoc_display.pt
+++ b/themis/fields/previewdoc_display.pt
@@ -5,7 +5,7 @@
             tal:attributes="src view/href;
                             width view/width;
                             height view/height"
-            type="application/pdf" width="200px" height="100px">
+            type="application/pdf" width="700px" height="910px">
        <p>Pas de lecteur PDF intégré, vous pouvez ouvrir le fichier
           en suivant ce lien : <a tal:attributes="href view/href"
           tal:content="view/filename">plop.pdf</a>.</p>
diff --git a/themis/fields/widgets.py b/themis/fields/widgets.py
index 5b35db9..438d399 100644
--- a/themis/fields/widgets.py
+++ b/themis/fields/widgets.py
@@ -414,12 +414,12 @@ class PreviewDocWidget(Widget):
     def width(self):
         if hasattr(self.field, 'width'):
             return self.field.width
-        return u'200px'
+        return u'710px'
 
     def height(self):
         if hasattr(self.field, 'height'):
             return self.field.height
-        return u'100px'
+        return u'910px'
 
     def get_attribute_name(self):
         if hasattr(self.field, 'attribute_name') and self.field.attribute_name: