diff --git a/src/App/Document.cpp b/src/App/Document.cpp
index 22768f46fe..f1b3272fee 100644
--- a/src/App/Document.cpp
+++ b/src/App/Document.cpp
@@ -1895,7 +1895,7 @@ bool Document::saveToFile(const char* filename) const
     signalStartSave(*this, filename);
 
     auto hGrp = App::GetApplication().GetParameterGroupByPath("User parameter:BaseApp/Preferences/Document");
-    int compression = hGrp->GetInt("CompressionLevel",3);
+    int compression = hGrp->GetInt("CompressionLevel",7);
     compression = Base::clamp<int>(compression, Z_NO_COMPRESSION, Z_BEST_COMPRESSION);
 
     bool policy = App::GetApplication().GetParameterGroupByPath
diff --git a/src/Gui/Document.cpp b/src/Gui/Document.cpp
index ad4f66bd66..21f2a6a702 100644
--- a/src/Gui/Document.cpp
+++ b/src/Gui/Document.cpp
@@ -1354,7 +1354,7 @@ void Document::Save (Base::Writer &writer) const
 
         ParameterGrp::handle hGrp = App::GetApplication().GetParameterGroupByPath("User parameter:BaseApp/Preferences/Document");
         if (hGrp->GetBool("SaveThumbnail", true)) {
-            int size = hGrp->GetInt("ThumbnailSize", 128);
+            int size = hGrp->GetInt("ThumbnailSize", 256);
             size = Base::clamp<int>(size, 64, 512);
             std::list<MDIView*> mdi = getMDIViews();
             for (const auto & it : mdi) {
diff --git a/src/Gui/PreferencePages/DlgSettingsDocument.ui b/src/Gui/PreferencePages/DlgSettingsDocument.ui
index 6e9a18fc34..37ca15fcee 100644
--- a/src/Gui/PreferencePages/DlgSettingsDocument.ui
+++ b/src/Gui/PreferencePages/DlgSettingsDocument.ui
@@ -98,7 +98,7 @@
            <string>Compression level for FCStd files</string>
           </property>
           <property name="value">
-           <number>3</number>
+           <number>7</number>
           </property>
           <property name="prefEntry" stdset="0">
            <cstring>CompressionLevel</cstring>
@@ -393,7 +393,7 @@ Common sizes are 128, 256 and 512</string>
            <number>512</number>
           </property>
           <property name="value">
-           <number>128</number>
+           <number>256</number>
           </property>
           <property name="prefEntry" stdset="0">
            <cstring>ThumbnailSize</cstring>