diff --git a/extensions/fablabchemnitz/cutoptim/Debug_CutOptim.txt b/extensions/fablabchemnitz/cutoptim/Debug_CutOptim.txt
deleted file mode 100644
index f50a5465..00000000
--- a/extensions/fablabchemnitz/cutoptim/Debug_CutOptim.txt
+++ /dev/null
@@ -1,60 +0,0 @@
-Entering TransformPaths
-Shape 0 id:path1141 Stroke[1 000000] width:0.264583
-Shape 1 id:path1141-8 Stroke[1 000000] width:0.264583
-Shape 2 id:path1141-9 Stroke[1 000000] width:0.264583
-Shape 3 id:path1141-0 Stroke[1 000000] width:0.264583
-Transform paths pass 2 : checking if paths are included in other ones
-End of Transform paths
----------------- Entering EnlargePaths, elapsed time: 3ms
----------------- Exit EnlargePaths, elapsed time: 3ms
-
-
----------------- Entering BreakLongerEdges, elapsed time: 3ms
----------------- Exit BreakLongerEdges, elapsed time: 3ms
-
-
---------  BuilSingleListPath : There are 4 paths in the list
-  Path 0 id: path1141-8_0 area 2004.46mm2 and 0 children
-  Path 1 id: path1141-9_0 area 2004.46mm2 and 0 children
-  Path 2 id: path1141_0 area 2004.46mm2 and 0 children
-  Path 3 id: path1141-0_0 area 2004.46mm2 and 0 children
------------   End of BuilSingleListPath  ---------------------------
-
-
-Time: 3.000000ms Enter Optimize with Optimizing level set to 5
------   Placing first polygon (path1141-8_0) -----------
-Entering PlaceFirst...
-First polygon placed with rotation 0.000000° and translation (3.280817,0.000000)
---------------------   Placing Polygon (Free rotation)1: path1141-9_0  ------------------------------
-Elapsed time 0.000000ms, for last polygon 0.000000ms
-Level 1: Applying best move : (-97.181078,-42.337603)/180.000000° to polygon 3 will place vertex 2 on vertex 1 of polygon 2
-  new hull with 5 vertices, area 8034.754228 Fixed polygon area 8017.823036
-  LargeConvexHull area :8034.754228 Cost= 8034.754228
-  CurFloating.Size=0
-Level 2: Applying best move : (1.434374,-9.167470)/0.000000° to polygon 2 will place vertex 3 on vertex 0 of polygon 1
-  new hull with 6 vertices, area 6021.832982 Fixed polygon area 6013.367409
-  LargeConvexHull area :6021.832982 Cost= 8034.754228
-  CurFloating.Size=1
- Element 1: Translation=(-97.181078,-42.337603) rot=180.000000 Hull area=8034.754228
-Level 3: Applying best move : (-102.821809,-27.175084)/180.000000° to polygon 1 will place vertex 2 on vertex 1 of polygon 0
-  new hull with 4 vertices, area 4017.377123 Fixed polygon area 4008.911749
-  LargeConvexHull area :4017.377123 Cost= 8034.754228
-  CurFloating.Size=2
- Element 1: Translation=(1.434374,-9.167470) rot=0.000000 Hull area=6021.832982
- Element 2: Translation=(-97.181078,-42.337603) rot=180.000000 Hull area=8034.754228
---------------------   Placing Polygon (Free rotation)2: path1141_0  ------------------------------
-Elapsed time 2.000000ms, for last polygon 2.000000ms
-######   Unable to place polygon 2, aborting
---------------------   Placing Polygon (Free rotation)3: path1141-0_0  ------------------------------
-Elapsed time 3.000000ms, for last polygon 1.000000ms
-######   Unable to place polygon 3, aborting
-Optimization finished, elapsed time 0.003000s
-nbRotation: 226
-nbTranslation: 226
-nbPointInPoly: 622
-nbIntersectPoly: 57
-nbPlacementImpossible: 207
-nbCheckAngles=392
-CacheMiss=392
-CacheHit OK=0
-CacheHit KO=1272
diff --git a/extensions/fablabchemnitz/imagetracer.js/imagetracerjs.py b/extensions/fablabchemnitz/imagetracer.js/imagetracerjs.py
index 3a37dfeb..1496d706 100644
--- a/extensions/fablabchemnitz/imagetracer.js/imagetracerjs.py
+++ b/extensions/fablabchemnitz/imagetracer.js/imagetracerjs.py
@@ -17,17 +17,11 @@ Features
 Author: Mario Voigt / FabLab Chemnitz
 Mail: mario.voigt@stadtfabrikanten.org
 Date: 18.08.2020
-Last patch: 23.04.2021
+Last patch: 24.04.2021
 License: GNU GPL v3
 
 Used version of imagetracerjs: https://github.com/jankovicsandras/imagetracerjs/commit/4d0f429efbb936db1a43db80815007a2cb113b34
 
-ToDo:
-    - fix resizing if one or all of the following sizes are zero:
-    img_w = image.get('width')
-    img_h = image.get('height')
-    img_x = image.get('x')
-    img_y = image.get('y')
 """
 
 class Imagetracerjs (inkex.EffectExtension):
@@ -162,15 +156,24 @@ class Imagetracerjs (inkex.EffectExtension):
                             trace_width = viewBox.split(' ')[2]
                             trace_height = viewBox.split(' ')[3]
                         
+                        # add transformation to fit previous XY coordinates and width/height
                         img_w = image.get('width')
                         img_h = image.get('height')
                         img_x = image.get('x')
                         img_y = image.get('y')
-                               
                         if img_w is not None and img_h is not None and img_x is not None and img_y is not None:
                             transform = "matrix({:1.6f}, 0, 0, {:1.6f}, {:1.6f}, {:1.6f})"\
                             .format(float(img_w) / float(trace_width), float(img_h) / float(trace_height), float(img_x), float(img_y))
                             newGroup.attrib['transform'] = transform
+                        else:
+                            t = image.composed_transform()
+                            img_w = t.a
+                            img_h = t.d 
+                            img_x = t.e
+                            img_y = t.f
+                            transform = "matrix({:1.6f}, 0, 0, {:1.6f}, {:1.6f}, {:1.6f})"\
+                            .format(float(img_w) / float(trace_width), float(img_h) / float(trace_height), float(img_x), float(img_y))
+                            newGroup.attrib['transform'] = transform
            
                         for child in doc.getchildren():
                             newGroup.append(child)