diff --git a/plugins/extensions/pykrita/plugin/plugins/CMakeLists.txt b/plugins/extensions/pykrita/plugin/plugins/CMakeLists.txt
--- a/plugins/extensions/pykrita/plugin/plugins/CMakeLists.txt
+++ b/plugins/extensions/pykrita/plugin/plugins/CMakeLists.txt
@@ -76,6 +76,8 @@
 install_pykrita_plugin(assignprofiledialog)
 install_pykrita_plugin(scripter)
 install_pykrita_plugin(colorspace)
+install_pykrita_plugin(canvassize)
+install_pykrita_plugin(filtermanager)
 #install_pykrita_plugin(highpass)
 install_pykrita_plugin(tenbrushes)
 
diff --git a/plugins/extensions/pykrita/plugin/plugins/canvassize/__init__.py b/plugins/extensions/pykrita/plugin/plugins/canvassize/__init__.py
new file mode 100644
--- /dev/null
+++ b/plugins/extensions/pykrita/plugin/plugins/canvassize/__init__.py
@@ -0,0 +1,2 @@
+# let's make a module
+from .canvassize import *
diff --git a/plugins/extensions/pykrita/plugin/plugins/canvassize/canvassize.py b/plugins/extensions/pykrita/plugin/plugins/canvassize/canvassize.py
new file mode 100644
--- /dev/null
+++ b/plugins/extensions/pykrita/plugin/plugins/canvassize/canvassize.py
@@ -0,0 +1,20 @@
+import krita
+from canvassize import uicanvassize
+
+
+class CanvasSizeExtension(krita.Extension):
+
+    def __init__(self, parent):
+        super(CanvasSizeExtension, self).__init__(parent)
+
+    def setup(self):
+        action = krita.Krita.instance().createAction("Canvas Size")
+        action.setToolTip("Plugin to change canvas size to selected documents")
+        action.triggered.connect(self.initialize)
+
+    def initialize(self):
+        self.uicanvassize = uicanvassize.UICanvasSize()
+        self.uicanvassize.initialize()
+
+
+Scripter.addExtension(CanvasSizeExtension(krita.Krita.instance()))
diff --git a/plugins/extensions/pykrita/plugin/plugins/canvassize/canvassizedialog.py b/plugins/extensions/pykrita/plugin/plugins/canvassize/canvassizedialog.py
new file mode 100644
--- /dev/null
+++ b/plugins/extensions/pykrita/plugin/plugins/canvassize/canvassizedialog.py
@@ -0,0 +1,10 @@
+from PyQt5.QtWidgets import QDialog
+
+
+class CanvasSizeDialog(QDialog):
+
+    def __init__(self, parent=None):
+        super(CanvasSizeDialog, self).__init__(parent)
+
+    def closeEvent(self, event):
+        event.accept()
diff --git a/plugins/extensions/pykrita/plugin/plugins/canvassize/kritapykrita_canvassize.desktop b/plugins/extensions/pykrita/plugin/plugins/canvassize/kritapykrita_canvassize.desktop
new file mode 100644
--- /dev/null
+++ b/plugins/extensions/pykrita/plugin/plugins/canvassize/kritapykrita_canvassize.desktop
@@ -0,0 +1,11 @@
+[Desktop Entry]
+Type=Service
+ServiceTypes=Krita/PythonPlugin
+X-KDE-Library=canvassize
+X-Python-2-Compatible=false
+Name=Canvas Size
+Name[en_GB]=Canvas Size
+Name[pt]=Tamanho da tela
+Comment=Plugin to change canvas size to selected documents
+Comment[en_GB]=Plugin to change canvas size to selected documents
+Comment[pt]='Plugin' para alterar o tamanho da tela de documentos selecionados
diff --git a/plugins/extensions/pykrita/plugin/plugins/canvassize/uicanvassize.py b/plugins/extensions/pykrita/plugin/plugins/canvassize/uicanvassize.py
new file mode 100644
--- /dev/null
+++ b/plugins/extensions/pykrita/plugin/plugins/canvassize/uicanvassize.py
@@ -0,0 +1,65 @@
+from canvassize import canvassizedialog
+from PyQt5.QtCore import Qt
+from PyQt5.QtWidgets import (QFormLayout, QListWidget,QAbstractItemView,
+                             QDialogButtonBox, QVBoxLayout, QFrame,
+                             QPushButton, QAbstractScrollArea)
+import krita
+
+
+class UICanvasSize(object):
+
+    def __init__(self):
+        self.mainDialog = canvassizedialog.CanvasSizeDialog()
+        self.mainLayout = QVBoxLayout(self.mainDialog)
+        self.formLayout = QFormLayout()
+        self.documentLayout = QVBoxLayout()
+        self.refreshButton = QPushButton("Refresh")
+        self.widgetDocuments = QListWidget()
+        self.buttonBox = QDialogButtonBox(QDialogButtonBox.Ok | QDialogButtonBox.Cancel)
+
+        self.kritaInstance = krita.Krita.instance()
+        self.documentsList = []
+
+        self.refreshButton.clicked.connect(self.refreshButtonClicked)
+        self.buttonBox.accepted.connect(self.confirmButton)
+        self.buttonBox.rejected.connect(self.mainDialog.close)
+
+        self.mainDialog.setWindowModality(Qt.NonModal)
+        self.widgetDocuments.setSelectionMode(QAbstractItemView.MultiSelection)
+        self.widgetDocuments.setSizeAdjustPolicy(QAbstractScrollArea.AdjustToContents)
+
+    def initialize(self):
+        self.loadDocuments()
+
+        self.documentLayout.addWidget(self.widgetDocuments)
+        self.documentLayout.addWidget(self.refreshButton)
+
+        self.formLayout.addRow('Documents', self.documentLayout)
+
+        self.line = QFrame()
+        self.line.setFrameShape(QFrame.HLine)
+        self.line.setFrameShadow(QFrame.Sunken)
+
+        self.mainLayout.addLayout(self.formLayout)
+        self.mainLayout.addWidget(self.line)
+        self.mainLayout.addWidget(self.buttonBox)
+
+        self.mainDialog.resize(500, 300)
+        self.mainDialog.setWindowTitle("Canvas Size")
+        self.mainDialog.setSizeGripEnabled(True)
+        self.mainDialog.show()
+        self.mainDialog.activateWindow()
+
+    def loadDocuments(self):
+        self.widgetDocuments.clear()
+
+        self.documentsList = [document for document in self.kritaInstance.documents() if document.fileName()]
+
+        for document in self.documentsList:
+            self.widgetDocuments.addItem(document.fileName())
+
+    def refreshButtonClicked(self):
+        self.loadDocuments()
+
+    def confirmButton(self):
+        pass
diff --git a/plugins/extensions/pykrita/plugin/plugins/colorspace/colorspace.py b/plugins/extensions/pykrita/plugin/plugins/colorspace/colorspace.py
--- a/plugins/extensions/pykrita/plugin/plugins/colorspace/colorspace.py
+++ b/plugins/extensions/pykrita/plugin/plugins/colorspace/colorspace.py
@@ -1,6 +1,3 @@
-import sys
-from PyQt5.QtWidgets import QPushButton, QDialog, QDialogButtonBox, QVBoxLayout, QHBoxLayout
-from PyQt5.QtCore import Qt
 import krita
 from colorspace import uicolorspace
 
diff --git a/plugins/extensions/pykrita/plugin/plugins/colorspace/uicolorspace.py b/plugins/extensions/pykrita/plugin/plugins/colorspace/uicolorspace.py
--- a/plugins/extensions/pykrita/plugin/plugins/colorspace/uicolorspace.py
+++ b/plugins/extensions/pykrita/plugin/plugins/colorspace/uicolorspace.py
@@ -4,13 +4,14 @@
 from PyQt5.QtWidgets import (QFormLayout, QListWidget, QListWidgetItem,
                              QAbstractItemView, QComboBox, QDialogButtonBox,
                              QVBoxLayout, QFrame, QMessageBox, QPushButton,
-                             QHBoxLayout)
+                             QHBoxLayout, QAbstractScrollArea)
 from PyQt5.QtGui import QIcon
 import krita
 from colorspace import resources_rc
 
 
 class UIColorSpace(object):
+
     def __init__(self):
         self.mainDialog = colorspacedialog.ColorSpaceDialog()
         self.mainLayout = QVBoxLayout(self.mainDialog)
@@ -35,6 +36,7 @@
 
         self.mainDialog.setWindowModality(Qt.NonModal)
         self.widgetDocuments.setSelectionMode(QAbstractItemView.MultiSelection)
+        self.widgetDocuments.setSizeAdjustPolicy(QAbstractScrollArea.AdjustToContents)
 
     def initialize(self):
         self.loadDocuments()
diff --git a/plugins/extensions/pykrita/plugin/plugins/filtermanager/__init__.py b/plugins/extensions/pykrita/plugin/plugins/filtermanager/__init__.py
new file mode 100644
--- /dev/null
+++ b/plugins/extensions/pykrita/plugin/plugins/filtermanager/__init__.py
@@ -0,0 +1,2 @@
+# let's make a module
+from .filtermanager import *
diff --git a/plugins/extensions/pykrita/plugin/plugins/filtermanager/filtermanager.py b/plugins/extensions/pykrita/plugin/plugins/filtermanager/filtermanager.py
new file mode 100644
--- /dev/null
+++ b/plugins/extensions/pykrita/plugin/plugins/filtermanager/filtermanager.py
@@ -0,0 +1,20 @@
+import krita
+from filtermanager import uifiltermanager
+
+
+class FilterManagerExtension(krita.Extension):
+
+    def __init__(self, parent):
+        super(FilterManagerExtension, self).__init__(parent)
+
+    def setup(self):
+        action = krita.Krita.instance().createAction("Filter Manager")
+        action.setToolTip("Plugin to filters management")
+        action.triggered.connect(self.initialize)
+
+    def initialize(self):
+        self.uifiltermanager = uifiltermanager.UIFilterManager()
+        self.uifiltermanager.initialize()
+
+
+Scripter.addExtension(FilterManagerExtension(krita.Krita.instance()))
diff --git a/plugins/extensions/pykrita/plugin/plugins/filtermanager/filtermanagerdialog.py b/plugins/extensions/pykrita/plugin/plugins/filtermanager/filtermanagerdialog.py
new file mode 100644
--- /dev/null
+++ b/plugins/extensions/pykrita/plugin/plugins/filtermanager/filtermanagerdialog.py
@@ -0,0 +1,10 @@
+from PyQt5.QtWidgets import QDialog
+
+
+class FilterManagerDialog(QDialog):
+
+    def __init__(self, parent=None):
+        super(FilterManagerDialog, self).__init__(parent)
+
+    def closeEvent(self, event):
+        event.accept()
diff --git a/plugins/extensions/pykrita/plugin/plugins/filtermanager/kritapykrita_filtermanager.desktop b/plugins/extensions/pykrita/plugin/plugins/filtermanager/kritapykrita_filtermanager.desktop
new file mode 100644
--- /dev/null
+++ b/plugins/extensions/pykrita/plugin/plugins/filtermanager/kritapykrita_filtermanager.desktop
@@ -0,0 +1,11 @@
+[Desktop Entry]
+Type=Service
+ServiceTypes=Krita/PythonPlugin
+X-KDE-Library=filtermanager
+X-Python-2-Compatible=false
+Name=Filter Manager
+Name[en_GB]=Filter Manager
+Name[pt]=Gerenciador de filtro
+Comment=Plugin to filters management
+Comment[en_GB]=Plugin to filters management
+Comment[pt]='Plugin' para gerenciamento de filtros
diff --git a/plugins/extensions/pykrita/plugin/plugins/filtermanager/uifiltermanager.py b/plugins/extensions/pykrita/plugin/plugins/filtermanager/uifiltermanager.py
new file mode 100644
--- /dev/null
+++ b/plugins/extensions/pykrita/plugin/plugins/filtermanager/uifiltermanager.py
@@ -0,0 +1,37 @@
+from filtermanager import filtermanagerdialog
+from PyQt5.QtCore import Qt
+from PyQt5.QtWidgets import (QFormLayout, QAbstractItemView, QDialogButtonBox,
+                             QVBoxLayout, QFrame, QAbstractScrollArea)
+import krita
+
+
+class UIFilterManager(object):
+
+    def __init__(self):
+        self.mainDialog = filtermanagerdialog.FilterManagerDialog()
+        self.mainLayout = QVBoxLayout(self.mainDialog)
+        self.formLayout = QFormLayout()
+        self.buttonBox = QDialogButtonBox(QDialogButtonBox.Ok | QDialogButtonBox.Cancel)
+
+        self.buttonBox.accepted.connect(self.confirmButton)
+        self.buttonBox.rejected.connect(self.mainDialog.close)
+
+        self.mainDialog.setWindowModality(Qt.NonModal)
+
+    def initialize(self):
+        self.line = QFrame()
+        self.line.setFrameShape(QFrame.HLine)
+        self.line.setFrameShadow(QFrame.Sunken)
+
+        self.mainLayout.addLayout(self.formLayout)
+        self.mainLayout.addWidget(self.line)
+        self.mainLayout.addWidget(self.buttonBox)
+
+        self.mainDialog.resize(500, 300)
+        self.mainDialog.setWindowTitle("Filter Manager")
+        self.mainDialog.setSizeGripEnabled(True)
+        self.mainDialog.show()
+        self.mainDialog.activateWindow()
+
+    def confirmButton(self):
+        pass