diff --git a/bt5/erp5_core_proxy_field_legacy/SkinTemplateItem/portal_skins/erp5_core_proxy_field_legacy/Base_viewFieldLibrary/my_thumbnail.xml b/bt5/erp5_core_proxy_field_legacy/SkinTemplateItem/portal_skins/erp5_core_proxy_field_legacy/Base_viewFieldLibrary/my_thumbnail.xml
index 4093fea77b695ec2cf3cac74d39581878bb282e5..5f25a5750fc30b317d974d61d32a862d7b4d27a2 100644
--- a/bt5/erp5_core_proxy_field_legacy/SkinTemplateItem/portal_skins/erp5_core_proxy_field_legacy/Base_viewFieldLibrary/my_thumbnail.xml
+++ b/bt5/erp5_core_proxy_field_legacy/SkinTemplateItem/portal_skins/erp5_core_proxy_field_legacy/Base_viewFieldLibrary/my_thumbnail.xml
@@ -177,11 +177,21 @@
                     </value>
                 </item>
                 <item>
-                    <key> <string>image_resolution</string> </key>
+                    <key> <string>image_pre_converted_only</string> </key>
+                    <value> <string></string> </value>
+                </item>
+                <item>
+                    <key> <string>image_quality</string> </key>
                     <value>
                       <persistent> <string encoding="base64">AAAAAAAAAAQ=</string> </persistent>
                     </value>
                 </item>
+                <item>
+                    <key> <string>image_resolution</string> </key>
+                    <value>
+                      <persistent> <string encoding="base64">AAAAAAAAAAU=</string> </persistent>
+                    </value>
+                </item>
                 <item>
                     <key> <string>max_length</string> </key>
                     <value> <string></string> </value>
@@ -265,6 +275,14 @@
                     <key> <string>image_format</string> </key>
                     <value> <string>png</string> </value>
                 </item>
+                <item>
+                    <key> <string>image_pre_converted_only</string> </key>
+                    <value> <int>1</int> </value>
+                </item>
+                <item>
+                    <key> <string>image_quality</string> </key>
+                    <value> <int>75</int> </value>
+                </item>
                 <item>
                     <key> <string>image_resolution</string> </key>
                     <value> <string></string> </value>
@@ -338,4 +356,17 @@
       </dictionary>
     </pickle>
   </record>
+  <record id="5" aka="AAAAAAAAAAU=">
+    <pickle>
+      <global name="TALESMethod" module="Products.Formulator.TALESField"/>
+    </pickle>
+    <pickle>
+      <dictionary>
+        <item>
+            <key> <string>_text</string> </key>
+            <value> <string>python: here.portal_preferences.getPreferredImageQuality()</string> </value>
+        </item>
+      </dictionary>
+    </pickle>
+  </record>
 </ZopeData>
diff --git a/bt5/erp5_core_proxy_field_legacy/bt/revision b/bt5/erp5_core_proxy_field_legacy/bt/revision
index e440e5c842586965a7fb77deda2eca68612b1f53..bf0d87ab1b2b0ec1a11a3973d2845b42413d9767 100644
--- a/bt5/erp5_core_proxy_field_legacy/bt/revision
+++ b/bt5/erp5_core_proxy_field_legacy/bt/revision
@@ -1 +1 @@
-3
\ No newline at end of file
+4
\ No newline at end of file