diff --git a/src/pyFAI/gui/pilx/MainWindow.py b/src/pyFAI/gui/pilx/MainWindow.py
index 55499c22a..65e66a4e4 100644
--- a/src/pyFAI/gui/pilx/MainWindow.py
+++ b/src/pyFAI/gui/pilx/MainWindow.py
@@ -33,7 +33,7 @@
 __contact__ = "loic.huder@ESRF.eu"
 __license__ = "MIT"
 __copyright__ = "European Synchrotron Radiation Facility, Grenoble, France"
-__date__ = "31/01/2025"
+__date__ = "20/02/2025"
 __status__ = "development"
 
 from typing import Tuple
@@ -42,6 +42,7 @@
 import logging
 import os.path
 import posixpath
+import numpy
 from silx.gui import qt
 from silx.gui.colors import Colormap
 from silx.image.marchingsquares import find_contours
@@ -62,6 +63,8 @@
 from .widgets.MapPlotWidget import MapPlotWidget
 from .widgets.TitleWidget import TitleWidget
 from ...io.integration_config import WorkerConfig
+from ...utils.mathutil import binning as rebin_fct
+from ...detectors import Detector
 logger = logging.getLogger(__name__)
 
 class MainWindow(qt.QMainWindow):
@@ -240,6 +243,39 @@ def displayPatternAtIndices(self,
         self._integrated_plot_widget.setGraphXLabel(point._x_name)
         self._integrated_plot_widget.setGraphYLabel(point._y_name)
 
+    def getMask(self, image, maskfile=None):
+        """returns a 2D array of boolean with invalid pixels masked,
+        combination of Detector mask, static & dynamic mask.
+        Handles detector/mask image binning on the fly
+
+        :param image: 2D array image with data, used for dynamic masking
+        :param maskfile: filename or URL pointing to a static mask
+        :return: 2D array
+        """
+        if maskfile:
+            mask_image = get_data(url=DataUrl(maskfile))
+            if mask_image.shape != image.shape:
+                binning = [m//i for i, m in zip(image.shape, mask_image.shape)]
+                if min(binning)<1:
+                    mask_image = None
+                else:
+                    mask_image = rebin_fct(mask_image, binning)
+        else:
+            mask_image = None
+        detector = self.worker_config.poni.detector
+        if detector:
+            detector_mask = detector.mask
+            if detector.shape != image.shape:
+                detector.guess_binning(image)
+                detector_mask = rebin_fct(detector_mask, detector.binning)
+            if mask_image is None:
+                mask_image = detector_mask
+            else:
+                numpy.logical_or(mask_image, detector_mask, out=mask_image)
+            detector.mask = mask_image
+            mask_image = detector.dynamic_mask(image)
+        return mask_image
+
     def displayImageAtIndices(self, indices: ImageIndices):
         if self._file_name is None:
             return
@@ -276,14 +312,7 @@ def displayImageAtIndices(self, indices: ImageIndices):
             else:
                 maskfile = None
 
-        if maskfile:
-            mask_image = get_data(url=DataUrl(maskfile))
-            if mask_image.shape != image.shape:
-                mask_image = None
-        else:
-            mask_image = None
-
-        image_base = ImageBase(data=image, mask=mask_image)
+        image_base = ImageBase(data=image, mask=self.getMask(image, maskfile))
         self._image_plot_widget.setImageData(image_base.getValueData())
         self._image_plot_widget.setGraphTitle(f"{posixpath.basename(dataset_path)} #{image_index}")