diff --git a/conf/intelliphoto_dox b/conf/intelliphoto_dox
index 8c10cda..c1d0642 100644
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-       cx="6.3783484"
-       cy="243.5636"
-       r="2.5985863" />
-    <circle
-       style="fill:#ff0000;fill-opacity:1;stroke:none;stroke-width:1.85208333;stroke-miterlimit:4;stroke-dasharray:none"
-       id="circle4578"
-       cx="61.090405"
-       cy="281.7392"
-       r="2.5985863" />
-  </g>
-</svg>
diff --git a/src/Bilder.qrc b/src/Bilder.qrc
index 01e8468..f2c6dfa 100644
--- a/src/Bilder.qrc
+++ b/src/Bilder.qrc
@@ -10,5 +10,6 @@
         <file>icons/line-tool.svg</file>
         <file>icons/flood-fill-tool.svg</file>
         <file>icons/plain-tool.svg</file>
+        <file>icons/gradient-tool.svg</file>
     </qresource>
 </RCC>
diff --git a/src/GUI/IntelliPhotoGui.cpp b/src/GUI/IntelliPhotoGui.cpp
index e1b3fd4..b0c4de6 100644
--- a/src/GUI/IntelliPhotoGui.cpp
+++ b/src/GUI/IntelliPhotoGui.cpp
@@ -7,6 +7,8 @@
 #include <QCloseEvent>
 #include <QDebug>
 #include <string>
+#include <QScreen>
+#include <QGuiApplication>
 
 // IntelliPhotoGui constructor
 IntelliPhotoGui::IntelliPhotoGui(){
@@ -330,6 +332,7 @@ void IntelliPhotoGui::slotEnterPressed(){
 void IntelliPhotoGui::slotResetTools(){
 		CircleButton->setChecked(false);
 		FloodFillButton->setChecked(false);
+        GradientButton->setChecked(false);
 		LineButton->setChecked(false);
 		PenButton->setChecked(false);
 		PlainButton->setChecked(false);
@@ -689,6 +692,11 @@ void IntelliPhotoGui::createGui(){
 		paintingArea = new PaintingArea(1280, 720);
 		paintingArea->guiReference = this;
 
+        QScreen *screen = QGuiApplication::primaryScreen();
+        QRect  screenGeometry = screen->geometry();
+        Buttonsize.setWidth(screenGeometry.width()/20);
+        Buttonsize.setHeight(screenGeometry.height()/20);
+
 		preview = QPixmap(":/Icons/Buttons/icons/circle-tool.svg");
 		CircleButton = new QPushButton();
 		CircleButton->setFixedSize(Buttonsize);
@@ -703,12 +711,12 @@ void IntelliPhotoGui::createGui(){
 		FloodFillButton->setIconSize(Buttonsize);
 		FloodFillButton->setCheckable(true);
 
-		preview = QPixmap(":/Icons/Buttons/icons/icon.png");
-		GradientButton = new QPushButton();
-		GradientButton->setFixedSize(Buttonsize);
-		GradientButton->setIcon(preview);
-		GradientButton->setIconSize(Buttonsize);
-		GradientButton->setCheckable(true);
+        preview = QPixmap(":/Icons/Buttons/icons/gradient-tool.svg");
+        GradientButton = new QPushButton();
+        GradientButton->setFixedSize(Buttonsize);
+        GradientButton->setIcon(preview);
+        GradientButton->setIconSize(Buttonsize);
+        GradientButton->setCheckable(true);
 
 		preview = QPixmap(":/Icons/Buttons/icons/line-tool.svg");
 		LineButton = new QPushButton();
diff --git a/src/GUI/IntelliPhotoGui.h b/src/GUI/IntelliPhotoGui.h
index 25f6145..aeb2ede 100644
--- a/src/GUI/IntelliPhotoGui.h
+++ b/src/GUI/IntelliPhotoGui.h
@@ -124,7 +124,7 @@ PaintingArea* paintingArea;
 QPixmap preview;
 
 //size of all buttons
-const QSize Buttonsize = QSize(35,35);
+QSize Buttonsize;
 
 //buttons used for gui
 QPushButton* CircleButton;
diff --git a/docs/Icons/line-tool.svg b/src/icons/gradient-tool.svg
similarity index 62%
rename from docs/Icons/line-tool.svg
rename to src/icons/gradient-tool.svg
index 6ff03e8..8953735 100644
--- a/docs/Icons/line-tool.svg
+++ b/src/icons/gradient-tool.svg
@@ -15,10 +15,34 @@
    viewBox="0 0 67.733332 67.733335"
    version="1.1"
    id="svg8"
-   sodipodi:docname="line-tool.svg"
-   inkscape:version="0.92.4 (5da689c313, 2019-01-14)">
+   sodipodi:docname="gradient-tool.svg"
+   inkscape:version="0.92.4 (f8dce91, 2019-08-02)">
   <defs
      id="defs2">
+    <linearGradient
+       inkscape:collect="always"
+       id="linearGradient108">
+      <stop
+         style="stop-color:#00ff00;stop-opacity:1"
+         offset="0"
+         id="stop104" />
+      <stop
+         id="stop114"
+         offset="0.26227671"
+         style="stop-color:#ffcc00;stop-opacity:1" />
+      <stop
+         id="stop112"
+         offset="0.49107137"
+         style="stop-color:#ff6600;stop-opacity:1" />
+      <stop
+         style="stop-color:#d40000;stop-opacity:1"
+         offset="0.66964281"
+         id="stop116" />
+      <stop
+         style="stop-color:#00ffff;stop-opacity:1"
+         offset="1"
+         id="stop106" />
+    </linearGradient>
     <linearGradient
        inkscape:collect="always"
        id="linearGradient36">
@@ -40,6 +64,15 @@
        x2="-13.131983"
        y2="106.49742"
        gradientUnits="userSpaceOnUse" />
+    <linearGradient
+       inkscape:collect="always"
+       xlink:href="#linearGradient108"
+       id="linearGradient110"
+       x1="0"
+       y1="296.99997"
+       x2="67.73333"
+       y2="229.26665"
+       gradientUnits="userSpaceOnUse" />
   </defs>
   <sodipodi:namedview
      id="base"
@@ -49,18 +82,19 @@
      inkscape:pageopacity="0.0"
      inkscape:pageshadow="2"
      inkscape:zoom="2.8"
-     inkscape:cx="107.4786"
-     inkscape:cy="125.27289"
+     inkscape:cx="105.15717"
+     inkscape:cy="134.5586"
      inkscape:document-units="mm"
      inkscape:current-layer="layer1"
      showgrid="false"
      units="px"
      showguides="false"
-     inkscape:window-width="1920"
-     inkscape:window-height="1017"
-     inkscape:window-x="-8"
-     inkscape:window-y="-8"
-     inkscape:window-maximized="1" />
+     inkscape:window-width="1853"
+     inkscape:window-height="1025"
+     inkscape:window-x="67"
+     inkscape:window-y="27"
+     inkscape:window-maximized="1"
+     inkscape:snap-page="true" />
   <metadata
      id="metadata5">
     <rdf:RDF>
@@ -78,17 +112,19 @@
      inkscape:groupmode="layer"
      id="layer1"
      transform="translate(0,-229.26665)">
+    <rect
+       style="fill:url(#linearGradient110);fill-opacity:1;stroke-width:0.26458332"
+       id="rect102"
+       width="67.73333"
+       height="67.73333"
+       x="0"
+       y="229.26665"
+       ry="3.6852665" />
     <path
        style="fill:none;stroke:#000000;stroke-width:2.117;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1;stroke-miterlimit:4;stroke-dasharray:none"
        d="M 7.8430058,289.81843 60.854166,236.80727"
        id="path845"
        inkscape:connector-curvature="0" />
-    <circle
-       r="2.5985863"
-       cy="236.66553"
-       cx="60.712429"
-       id="circle4574"
-       style="fill:#ff0000;fill-opacity:1;stroke:none;stroke-width:1.85208333;stroke-miterlimit:4;stroke-dasharray:none" />
     <circle
        style="fill:#ff0000;fill-opacity:1;stroke:none;stroke-width:1.85208333;stroke-miterlimit:4;stroke-dasharray:none"
        id="path4572"