diff --git a/docs/changelog.md b/docs/changelog.md
index 638ed8dc..4e89620c 100644
--- a/docs/changelog.md
+++ b/docs/changelog.md
@@ -1,5 +1,15 @@
 # Changelog
 
+## Version 21.10
+
+**Features**:
+
++ Enhance "Copy Curve Data" options.
+
+**Development**:
+
++ None.
+
 ## Version 21.09
 
 **Features**:
diff --git a/pyslvs_ui/synthesis/dimensional_synthesis/__init__.py b/pyslvs_ui/synthesis/dimensional_synthesis/__init__.py
index 40861e89..b51b2f54 100644
--- a/pyslvs_ui/synthesis/dimensional_synthesis/__init__.py
+++ b/pyslvs_ui/synthesis/dimensional_synthesis/__init__.py
@@ -193,9 +193,13 @@ def clear_path(self, *, ask: bool = True) -> None:
     @Slot(name='on_path_copy_clicked')
     def __copy_path(self) -> None:
         """Copy the current path coordinates to clipboard."""
-        QApplication.clipboard().setText('\n'.join(
-            f"[{x}, {y}]," for x, y in self.current_path()
-        ))
+        if self.copy_as_csv.isChecked():
+            text = '\n'.join(f"{x},{y}" for x, y in self.current_path())
+        elif self.copy_as_array.isChecked():
+            text = '\n'.join(f"[{x}, {y}]," for x, y in self.current_path())
+        else:
+            raise ValueError("invalid option")
+        QApplication.clipboard().setText(text)
 
     @Slot(name='on_path_paste_clicked')
     def __paste_path(self) -> None:
diff --git a/pyslvs_ui/synthesis/dimensional_synthesis/dimension_widget.ui b/pyslvs_ui/synthesis/dimensional_synthesis/dimension_widget.ui
index 65933f24..168c625f 100644
--- a/pyslvs_ui/synthesis/dimensional_synthesis/dimension_widget.ui
+++ b/pyslvs_ui/synthesis/dimensional_synthesis/dimension_widget.ui
@@ -6,7 +6,7 @@
    <rect>
     <x>0</x>
     <y>0</y>
-    <width>430</width>
+    <width>457</width>
     <height>714</height>
    </rect>
   </property>
@@ -256,7 +256,7 @@
        <attribute name="title">
         <string>Target path</string>
        </attribute>
-       <layout class="QVBoxLayout" name="verticalLayout_2">
+       <layout class="QVBoxLayout" name="verticalLayout_5">
         <item>
          <widget class="QSplitter" name="down_splitter">
           <property name="orientation">
@@ -280,6 +280,46 @@
            <layout class="QHBoxLayout" name="horizontalLayout_5">
             <item>
              <layout class="QVBoxLayout" name="verticalLayout_8">
+              <item>
+               <widget class="QGroupBox" name="copy_format_groupbox">
+                <property name="title">
+                 <string>Copy</string>
+                </property>
+                <layout class="QVBoxLayout" name="verticalLayout_2">
+                 <item>
+                  <widget class="QRadioButton" name="copy_as_csv">
+                   <property name="text">
+                    <string>Comma-Separated Values</string>
+                   </property>
+                   <property name="checked">
+                    <bool>true</bool>
+                   </property>
+                  </widget>
+                 </item>
+                 <item>
+                  <widget class="QRadioButton" name="copy_as_array">
+                   <property name="text">
+                    <string>Array-like</string>
+                   </property>
+                  </widget>
+                 </item>
+                 <item>
+                  <widget class="QPushButton" name="path_copy">
+                   <property name="statusTip">
+                    <string>Copy the path data as a string.</string>
+                   </property>
+                   <property name="text">
+                    <string>Copy Curve Data</string>
+                   </property>
+                   <property name="icon">
+                    <iconset>
+                     <normaloff>icons:copy.png</normaloff>icons:copy.png</iconset>
+                   </property>
+                  </widget>
+                 </item>
+                </layout>
+               </widget>
+              </item>
               <item>
                <layout class="QHBoxLayout" name="horizontalLayout_2">
                 <item>
@@ -316,17 +356,6 @@
                   </property>
                  </widget>
                 </item>
-                <item>
-                 <widget class="QPushButton" name="path_copy">
-                  <property name="statusTip">
-                   <string>Copy the path data as a string.</string>
-                  </property>
-                  <property name="icon">
-                   <iconset>
-                    <normaloff>icons:copy.png</normaloff>icons:copy.png</iconset>
-                  </property>
-                 </widget>
-                </item>
                 <item>
                  <widget class="QPushButton" name="path_clear">
                   <property name="statusTip">
@@ -656,5 +685,6 @@
    </item>
   </layout>
  </widget>
+ <resources/>
  <connections/>
 </ui>
diff --git a/pyslvs_ui/synthesis/dimensional_synthesis/dimension_widget_ui.py b/pyslvs_ui/synthesis/dimensional_synthesis/dimension_widget_ui.py
index 6deeca32..7f9a6261 100644
--- a/pyslvs_ui/synthesis/dimensional_synthesis/dimension_widget_ui.py
+++ b/pyslvs_ui/synthesis/dimensional_synthesis/dimension_widget_ui.py
@@ -14,7 +14,7 @@
 class Ui_Form(object):
     def setupUi(self, Form):
         Form.setObjectName("Form")
-        Form.resize(430, 714)
+        Form.resize(457, 714)
         icon = QtGui.QIcon()
         icon.addPixmap(QtGui.QPixmap("icons:dimensional_synthesis.png"), QtGui.QIcon.Normal, QtGui.QIcon.Off)
         Form.setWindowIcon(icon)
@@ -144,8 +144,8 @@ def setupUi(self, Form):
         self.options_tab.addTab(self.structure, icon8, "")
         self.target_path = QtWidgets.QWidget()
         self.target_path.setObjectName("target_path")
-        self.verticalLayout_2 = QtWidgets.QVBoxLayout(self.target_path)
-        self.verticalLayout_2.setObjectName("verticalLayout_2")
+        self.verticalLayout_5 = QtWidgets.QVBoxLayout(self.target_path)
+        self.verticalLayout_5.setObjectName("verticalLayout_5")
         self.down_splitter = QtWidgets.QSplitter(self.target_path)
         self.down_splitter.setOrientation(QtCore.Qt.Horizontal)
         self.down_splitter.setObjectName("down_splitter")
@@ -167,6 +167,22 @@ def setupUi(self, Form):
         self.horizontalLayout_5.setObjectName("horizontalLayout_5")
         self.verticalLayout_8 = QtWidgets.QVBoxLayout()
         self.verticalLayout_8.setObjectName("verticalLayout_8")
+        self.copy_format_groupbox = QtWidgets.QGroupBox(self.layoutWidget)
+        self.copy_format_groupbox.setObjectName("copy_format_groupbox")
+        self.verticalLayout_2 = QtWidgets.QVBoxLayout(self.copy_format_groupbox)
+        self.verticalLayout_2.setObjectName("verticalLayout_2")
+        self.copy_as_csv = QtWidgets.QRadioButton(self.copy_format_groupbox)
+        self.copy_as_csv.setChecked(True)
+        self.copy_as_csv.setObjectName("copy_as_csv")
+        self.verticalLayout_2.addWidget(self.copy_as_csv)
+        self.copy_as_array = QtWidgets.QRadioButton(self.copy_format_groupbox)
+        self.copy_as_array.setObjectName("copy_as_array")
+        self.verticalLayout_2.addWidget(self.copy_as_array)
+        self.path_copy = QtWidgets.QPushButton(self.copy_format_groupbox)
+        self.path_copy.setIcon(icon2)
+        self.path_copy.setObjectName("path_copy")
+        self.verticalLayout_2.addWidget(self.path_copy)
+        self.verticalLayout_8.addWidget(self.copy_format_groupbox)
         self.horizontalLayout_2 = QtWidgets.QHBoxLayout()
         self.horizontalLayout_2.setObjectName("horizontalLayout_2")
         self.point_num = QtWidgets.QLabel(self.layoutWidget)
@@ -181,10 +197,6 @@ def setupUi(self, Form):
         self.path_paste.setIcon(icon9)
         self.path_paste.setObjectName("path_paste")
         self.horizontalLayout_2.addWidget(self.path_paste)
-        self.path_copy = QtWidgets.QPushButton(self.layoutWidget)
-        self.path_copy.setIcon(icon2)
-        self.path_copy.setObjectName("path_copy")
-        self.horizontalLayout_2.addWidget(self.path_copy)
         self.path_clear = QtWidgets.QPushButton(self.layoutWidget)
         self.path_clear.setIcon(icon7)
         self.path_clear.setAutoDefault(False)
@@ -276,7 +288,7 @@ def setupUi(self, Form):
         spacerItem3 = QtWidgets.QSpacerItem(20, 40, QtWidgets.QSizePolicy.Minimum, QtWidgets.QSizePolicy.Expanding)
         self.verticalLayout_3.addItem(spacerItem3)
         self.horizontalLayout_5.addLayout(self.verticalLayout_3)
-        self.verticalLayout_2.addWidget(self.down_splitter)
+        self.verticalLayout_5.addWidget(self.down_splitter)
         self.options_tab.addTab(self.target_path, icon, "")
         self.algorithm = QtWidgets.QWidget()
         self.algorithm.setObjectName("algorithm")
@@ -343,9 +355,13 @@ def retranslateUi(self, Form):
         item.setText(_translate("Form", "Range"))
         self.options_tab.setTabText(self.options_tab.indexOf(self.structure), _translate("Form", "Structure"))
         self.shape_only_option.setText(_translate("Form", "Compare shape only"))
+        self.copy_format_groupbox.setTitle(_translate("Form", "Copy"))
+        self.copy_as_csv.setText(_translate("Form", "Comma-Separated Values"))
+        self.copy_as_array.setText(_translate("Form", "Array-like"))
+        self.path_copy.setStatusTip(_translate("Form", "Copy the path data as a string."))
+        self.path_copy.setText(_translate("Form", "Copy Curve Data"))
         self.point_num.setText(_translate("Form", "<html><head/><body><p><span style=\" font-size:12pt; color:#00aa00;\">0</span></p></body></html>"))
         self.path_paste.setStatusTip(_translate("Form", "Past path data from string format."))
-        self.path_copy.setStatusTip(_translate("Form", "Copy the path data as a string."))
         self.path_clear.setStatusTip(_translate("Form", "Clear all points."))
         self.point_up.setStatusTip(_translate("Form", "Move the point up."))
         self.point_down.setStatusTip(_translate("Form", "Move the point down."))