diff --git a/CHANGELOG b/CHANGELOG
index 89db1f6..07409a9 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,4 +1,5 @@
-2.23.3
+2.23.0
+ - feat: add zoom-in functionality for contour plots (#211)
  - fix: cache selected event per dataset in QuickView (#196)
  - enh: add new logo (scope view and block matrix)
 2.22.2
diff --git a/dcscope/gui/analysis/ana_plot.py b/dcscope/gui/analysis/ana_plot.py
index 5535e8f..4294e1f 100644
--- a/dcscope/gui/analysis/ana_plot.py
+++ b/dcscope/gui/analysis/ana_plot.py
@@ -118,6 +118,7 @@ def read_pipeline_state(self):
             "contour": {
                 "enabled": self.groupBox_contour.isChecked(),
                 "legend":  self.checkBox_legend.isChecked(),
+                "zoomin":  self.checkBox_zoomin.isChecked(),
                 "line widths": [self.doubleSpinBox_lw_1.value(),
                                 self.doubleSpinBox_lw_2.value(),
                                 ],
diff --git a/dcscope/gui/analysis/ana_plot.ui b/dcscope/gui/analysis/ana_plot.ui
index 5a2456e..2337f7f 100644
--- a/dcscope/gui/analysis/ana_plot.ui
+++ b/dcscope/gui/analysis/ana_plot.ui
@@ -7,7 +7,7 @@
     <x>0</x>
     <y>0</y>
     <width>627</width>
-    <height>934</height>
+    <height>936</height>
    </rect>
   </property>
   <property name="windowTitle">
@@ -26,14 +26,14 @@
      <item>
       <widget class="QComboBox" name="comboBox_plots">
        <property name="sizeAdjustPolicy">
-        <enum>QComboBox::AdjustToContents</enum>
+        <enum>QComboBox::SizeAdjustPolicy::AdjustToContents</enum>
        </property>
       </widget>
      </item>
      <item>
       <spacer name="horizontalSpacer_2">
        <property name="orientation">
-        <enum>Qt::Horizontal</enum>
+        <enum>Qt::Orientation::Horizontal</enum>
        </property>
        <property name="sizeHint" stdset="0">
         <size>
@@ -52,8 +52,7 @@
         <string>Duplicate</string>
        </property>
        <property name="icon">
-        <iconset theme="edit-paste">
-         <normaloff>.</normaloff>.</iconset>
+        <iconset theme="edit-paste"/>
        </property>
       </widget>
      </item>
@@ -66,8 +65,7 @@
         <string>Remove</string>
        </property>
        <property name="icon">
-        <iconset theme="remove">
-         <normaloff>.</normaloff>.</iconset>
+        <iconset theme="remove"/>
        </property>
       </widget>
      </item>
@@ -76,7 +74,7 @@
    <item>
     <widget class="Line" name="line">
      <property name="orientation">
-      <enum>Qt::Horizontal</enum>
+      <enum>Qt::Orientation::Horizontal</enum>
      </property>
     </widget>
    </item>
@@ -152,7 +150,7 @@
             <item>
              <spacer name="horizontalSpacer_13">
               <property name="orientation">
-               <enum>Qt::Horizontal</enum>
+               <enum>Qt::Orientation::Horizontal</enum>
               </property>
               <property name="sizeHint" stdset="0">
                <size>
@@ -228,7 +226,7 @@
             <item>
              <spacer name="horizontalSpacer_14">
               <property name="orientation">
-               <enum>Qt::Horizontal</enum>
+               <enum>Qt::Orientation::Horizontal</enum>
               </property>
               <property name="sizeHint" stdset="0">
                <size>
@@ -277,7 +275,7 @@
             <item>
              <spacer name="horizontalSpacer_12">
               <property name="orientation">
-               <enum>Qt::Horizontal</enum>
+               <enum>Qt::Orientation::Horizontal</enum>
               </property>
               <property name="sizeHint" stdset="0">
                <size>
@@ -311,7 +309,7 @@
             <item>
              <spacer name="horizontalSpacer_11">
               <property name="orientation">
-               <enum>Qt::Horizontal</enum>
+               <enum>Qt::Orientation::Horizontal</enum>
               </property>
               <property name="sizeHint" stdset="0">
                <size>
@@ -365,7 +363,7 @@
             <item>
              <spacer name="horizontalSpacer_3">
               <property name="orientation">
-               <enum>Qt::Horizontal</enum>
+               <enum>Qt::Orientation::Horizontal</enum>
               </property>
               <property name="sizeHint" stdset="0">
                <size>
@@ -431,7 +429,7 @@
           <item>
            <spacer name="horizontalSpacer_5">
             <property name="orientation">
-             <enum>Qt::Horizontal</enum>
+             <enum>Qt::Orientation::Horizontal</enum>
             </property>
             <property name="sizeHint" stdset="0">
              <size>
@@ -458,7 +456,7 @@
           <item>
            <spacer name="horizontalSpacer">
             <property name="orientation">
-             <enum>Qt::Horizontal</enum>
+             <enum>Qt::Orientation::Horizontal</enum>
             </property>
             <property name="sizeHint" stdset="0">
              <size>
@@ -483,7 +481,7 @@
        </property>
        <layout class="QVBoxLayout" name="verticalLayout_3" stretch="0,0,0">
         <property name="sizeConstraint">
-         <enum>QLayout::SetDefaultConstraint</enum>
+         <enum>QLayout::SizeConstraint::SetDefaultConstraint</enum>
         </property>
         <item>
          <layout class="QHBoxLayout" name="horizontalLayout_2">
@@ -519,7 +517,7 @@
           <item>
            <spacer name="horizontalSpacer_4">
             <property name="orientation">
-             <enum>Qt::Horizontal</enum>
+             <enum>Qt::Orientation::Horizontal</enum>
             </property>
             <property name="sizeHint" stdset="0">
              <size>
@@ -534,7 +532,7 @@
         <item>
          <layout class="QGridLayout" name="gridLayout_scat">
           <property name="sizeConstraint">
-           <enum>QLayout::SetMinimumSize</enum>
+           <enum>QLayout::SizeConstraint::SetMinimumSize</enum>
           </property>
           <item row="0" column="0">
            <widget class="QLabel" name="label_4">
@@ -598,7 +596,7 @@
             <item>
              <spacer name="horizontalSpacer_6">
               <property name="orientation">
-               <enum>Qt::Horizontal</enum>
+               <enum>Qt::Orientation::Horizontal</enum>
               </property>
               <property name="sizeHint" stdset="0">
                <size>
@@ -692,7 +690,7 @@
             <item>
              <spacer name="horizontalSpacer_8">
               <property name="orientation">
-               <enum>Qt::Horizontal</enum>
+               <enum>Qt::Orientation::Horizontal</enum>
               </property>
               <property name="sizeHint" stdset="0">
                <size>
@@ -712,7 +710,7 @@
             <item>
              <spacer name="horizontalSpacer_16">
               <property name="orientation">
-               <enum>Qt::Horizontal</enum>
+               <enum>Qt::Orientation::Horizontal</enum>
               </property>
               <property name="sizeHint" stdset="0">
                <size>
@@ -914,7 +912,7 @@
             <item>
              <spacer name="horizontalSpacer_15">
               <property name="orientation">
-               <enum>Qt::Horizontal</enum>
+               <enum>Qt::Orientation::Horizontal</enum>
               </property>
               <property name="sizeHint" stdset="0">
                <size>
@@ -936,7 +934,7 @@
           <item row="1" column="5">
            <spacer name="horizontalSpacer_7">
             <property name="orientation">
-             <enum>Qt::Horizontal</enum>
+             <enum>Qt::Orientation::Horizontal</enum>
             </property>
             <property name="sizeHint" stdset="0">
              <size>
@@ -958,13 +956,20 @@
           </property>
          </widget>
         </item>
+        <item>
+         <widget class="QCheckBox" name="checkBox_zoomin">
+          <property name="text">
+           <string>Zoom-in</string>
+          </property>
+         </widget>
+        </item>
        </layout>
       </widget>
      </item>
      <item>
       <spacer name="verticalSpacer">
        <property name="orientation">
-        <enum>Qt::Vertical</enum>
+        <enum>Qt::Orientation::Vertical</enum>
        </property>
        <property name="sizeHint" stdset="0">
         <size>
@@ -979,7 +984,7 @@
        <item>
         <spacer name="horizontalSpacer_9">
          <property name="orientation">
-          <enum>Qt::Horizontal</enum>
+          <enum>Qt::Orientation::Horizontal</enum>
          </property>
          <property name="sizeHint" stdset="0">
           <size>
@@ -999,10 +1004,10 @@
        <item>
         <spacer name="horizontalSpacer_10">
          <property name="orientation">
-          <enum>Qt::Horizontal</enum>
+          <enum>Qt::Orientation::Horizontal</enum>
          </property>
          <property name="sizeType">
-          <enum>QSizePolicy::Fixed</enum>
+          <enum>QSizePolicy::Policy::Fixed</enum>
          </property>
          <property name="sizeHint" stdset="0">
           <size>
diff --git a/dcscope/gui/pipeline_plot.py b/dcscope/gui/pipeline_plot.py
index a242408..cac4eb4 100644
--- a/dcscope/gui/pipeline_plot.py
+++ b/dcscope/gui/pipeline_plot.py
@@ -361,6 +361,11 @@ def redraw(self, dslist, slot_states, plot_state, hash_flag=None):
             else:
                 legend = None
             for rtdc_ds, ss in zip(dslist, slot_states):
+                if plot_state["contour"].get("zoomin", False):
+                    zoomin_contours(dslist=dslist,
+                                    plot_item=self,
+                                    plot_state=plot_state
+                                    )
                 con = add_contour(plot_item=self,
                                   rtdc_ds=rtdc_ds,
                                   plot_state=plot_state,
@@ -471,6 +476,33 @@ def add_label(text, anchor_parent, text_halign="center", text_valign="center",
     label.setPos(x + dx, y + dy)
 
 
+def zoomin_contours(dslist, plot_item, plot_state, margin_per=5):
+    """Zoom-in contour data if enabled"""
+    x_min, x_max, y_min, y_max = 0, 0, 0, 0
+    # compute all contours
+    contours_list = [compute_contours(plot_state, ds) for ds in dslist]
+    # flatten list of contours
+    all_points = np.vstack([np.vstack(c) for conts in contours_list
+                            for c in conts])
+
+    if all_points.size > 0:
+        x_min = np.min(all_points[:, 0])
+        x_max = np.max(all_points[:, 0])
+        y_min = np.min(all_points[:, 1])
+        y_max = np.max(all_points[:, 1])
+
+    # Add margin
+    x_margin = (x_max - x_min) * margin_per*0.01
+    y_margin = (y_max - y_min) * margin_per*0.01
+
+    # Set view range with margins
+    plot_item.setRange(
+        xRange=(x_min - x_margin, x_max + x_margin),
+        yRange=(y_min - y_margin, y_max + y_margin),
+        padding=0
+    )
+
+
 def add_contour(plot_item, plot_state, rtdc_ds, slot_state, legend=None):
     contours = compute_contours(plot_state=plot_state, rtdc_ds=rtdc_ds)
     con = plot_state["contour"]
diff --git a/dcscope/pipeline/plot.py b/dcscope/pipeline/plot.py
index 1a4eb5a..bd75727 100644
--- a/dcscope/pipeline/plot.py
+++ b/dcscope/pipeline/plot.py
@@ -44,6 +44,7 @@
     "contour": {
         "enabled": True,
         "legend": False,  # display plot legend
+        "zoomin": False,  # enable zoom-in functionality
         "line widths": [3.0, 1.5],  # contour line widths [pt]
         "line styles": ["solid", "dashed"],
         "percentiles": [95.0, 50.0],
@@ -97,6 +98,7 @@
     "contour": {
         "enabled":  bool,
         "legend": bool,
+        "zoomin": bool,
         "line widths": (float,),
         "line styles": (["solid", "dashed", "dotted"],),
         "percentiles": (float,),