diff --git a/Demos/Cube/Cube.cpp b/Demos/Cube/Cube.cpp
index 253e37ff97..cdb2f6c484 100644
--- a/Demos/Cube/Cube.cpp
+++ b/Demos/Cube/Cube.cpp
@@ -26,6 +26,7 @@
 
 #include <LibCore/ElapsedTimer.h>
 #include <LibGUI/Application.h>
+#include <LibGUI/Icon.h>
 #include <LibGUI/Label.h>
 #include <LibGUI/Painter.h>
 #include <LibGUI/Widget.h>
@@ -206,7 +207,9 @@ int main(int argc, char** argv)
     cube.set_stat_label(time);
 
     window->show();
-    window->set_icon(Gfx::Bitmap::load_from_file("/res/icons/16x16/app-cube.png"));
+
+    auto app_icon = GUI::Icon::default_icon("app-cube");
+    window->set_icon(app_icon.bitmap_for_size(16));
 
     return app->exec();
 }
diff --git a/Demos/Eyes/main.cpp b/Demos/Eyes/main.cpp
index f9d9a19392..35fcf28331 100644
--- a/Demos/Eyes/main.cpp
+++ b/Demos/Eyes/main.cpp
@@ -28,6 +28,7 @@
 #include <LibCore/ArgsParser.h>
 #include <LibGUI/AboutDialog.h>
 #include <LibGUI/Application.h>
+#include <LibGUI/Icon.h>
 #include <LibGUI/Menu.h>
 #include <LibGUI/MenuBar.h>
 #include <LibGUI/Window.h>
@@ -78,9 +79,11 @@ int main(int argc, char* argv[])
         extra_columns = num_eyes % max_in_row;
     }
 
+    auto app_icon = GUI::Icon::default_icon("app-eyes");
+
     auto window = GUI::Window::construct();
     window->set_title("Eyes");
-    window->set_icon(Gfx::Bitmap::load_from_file("/res/icons/16x16/app-eyes.png"));
+    window->set_icon(app_icon.bitmap_for_size(16));
     window->resize(75 * (full_rows > 0 ? max_in_row : extra_columns), 100 * (full_rows + (extra_columns > 0 ? 1 : 0)));
     window->set_has_alpha_channel(true);
 
@@ -92,7 +95,7 @@ int main(int argc, char* argv[])
 
     auto& help_menu = menubar->add_menu("Help");
     help_menu.add_action(GUI::Action::create("About", [&](auto&) {
-        GUI::AboutDialog::show("Mouse Demo", Gfx::Bitmap::load_from_file("/res/icons/32x32/app-eyes.png"), window);
+        GUI::AboutDialog::show("Eyes Demo", app_icon.bitmap_for_size(32), window);
     }));
 
     app->set_menubar(move(menubar));
diff --git a/Demos/Fire/Fire.cpp b/Demos/Fire/Fire.cpp
index 3d1c486cc7..52b4d2167b 100644
--- a/Demos/Fire/Fire.cpp
+++ b/Demos/Fire/Fire.cpp
@@ -44,6 +44,7 @@
 
 #include <LibCore/ElapsedTimer.h>
 #include <LibGUI/Application.h>
+#include <LibGUI/Icon.h>
 #include <LibGUI/Label.h>
 #include <LibGUI/Painter.h>
 #include <LibGUI/Widget.h>
@@ -229,7 +230,9 @@ int main(int argc, char** argv)
     fire.set_stat_label(time);
 
     window->show();
-    window->set_icon(Gfx::Bitmap::load_from_file("/res/icons/16x16/app-fire.png"));
+
+    auto app_icon = GUI::Icon::default_icon("app-fire");
+    window->set_icon(app_icon.bitmap_for_size(16));
 
     return app->exec();
 }
diff --git a/Demos/HelloWorld/main.cpp b/Demos/HelloWorld/main.cpp
index 34fe2be132..6097ca7169 100644
--- a/Demos/HelloWorld/main.cpp
+++ b/Demos/HelloWorld/main.cpp
@@ -27,6 +27,7 @@
 #include <LibGUI/Application.h>
 #include <LibGUI/BoxLayout.h>
 #include <LibGUI/Button.h>
+#include <LibGUI/Icon.h>
 #include <LibGUI/Label.h>
 #include <LibGUI/Widget.h>
 #include <LibGUI/Window.h>
@@ -34,11 +35,12 @@
 int main(int argc, char** argv)
 {
     auto app = GUI::Application::construct(argc, argv);
+    auto app_icon = GUI::Icon::default_icon("app-hello-world");
 
     auto window = GUI::Window::construct();
     window->resize(240, 160);
     window->set_title("Hello World!");
-    window->set_icon(Gfx::Bitmap::load_from_file("/res/icons/16x16/app-hello-world.png"));
+    window->set_icon(app_icon.bitmap_for_size(16));
 
     auto& main_widget = window->set_main_widget<GUI::Widget>();
     main_widget.set_fill_with_background_color(true);
diff --git a/Demos/LibGfxDemo/main.cpp b/Demos/LibGfxDemo/main.cpp
index 07c6bc330a..d9ce949652 100644
--- a/Demos/LibGfxDemo/main.cpp
+++ b/Demos/LibGfxDemo/main.cpp
@@ -25,6 +25,7 @@
  */
 
 #include <LibGUI/Application.h>
+#include <LibGUI/Icon.h>
 #include <LibGUI/Painter.h>
 #include <LibGUI/Widget.h>
 #include <LibGUI/Window.h>
@@ -203,7 +204,9 @@ int main(int argc, char** argv)
     window->set_title("LibGfx Demo");
     window->set_resizable(false);
     window->resize(WIDTH, HEIGHT);
-    window->set_icon(Gfx::Bitmap::load_from_file("/res/icons/16x16/app-libgfx-demo.png"));
+
+    auto app_icon = GUI::Icon::default_icon("app-libgfx-demo");
+    window->set_icon(app_icon.bitmap_for_size(16));
     window->set_main_widget<Canvas>();
     window->show();
 
diff --git a/Demos/Mouse/main.cpp b/Demos/Mouse/main.cpp
index 2e6d5cc89b..0146cf376b 100644
--- a/Demos/Mouse/main.cpp
+++ b/Demos/Mouse/main.cpp
@@ -29,6 +29,7 @@
 #include <LibGUI/Application.h>
 #include <LibGUI/BoxLayout.h>
 #include <LibGUI/Frame.h>
+#include <LibGUI/Icon.h>
 #include <LibGUI/Menu.h>
 #include <LibGUI/MenuBar.h>
 #include <LibGUI/Painter.h>
@@ -172,9 +173,11 @@ private:
 int main(int argc, char** argv)
 {
     auto app = GUI::Application::construct(argc, argv);
+    auto app_icon = GUI::Icon::default_icon("app-mouse");
+
     auto window = GUI::Window::construct();
     window->set_title("Mouse button demo");
-    window->set_icon(Gfx::Bitmap::load_from_file("/res/icons/16x16/app-mouse.png"));
+    window->set_icon(app_icon.bitmap_for_size(16));
     window->resize(160, 155);
 
     auto& main_widget = window->set_main_widget<MainFrame>();
@@ -186,7 +189,7 @@ int main(int argc, char** argv)
 
     auto& help_menu = menubar->add_menu("Help");
     help_menu.add_action(GUI::Action::create("About", [&](auto&) {
-        GUI::AboutDialog::show("Mouse Demo", Gfx::Bitmap::load_from_file("/res/icons/32x32/app-mouse.png"), window);
+        GUI::AboutDialog::show("Mouse Demo", app_icon.bitmap_for_size(32), window);
     }));
 
     app->set_menubar(move(menubar));
diff --git a/Demos/Screensaver/Screensaver.cpp b/Demos/Screensaver/Screensaver.cpp
index 4af86a7810..593c80958a 100644
--- a/Demos/Screensaver/Screensaver.cpp
+++ b/Demos/Screensaver/Screensaver.cpp
@@ -28,6 +28,7 @@
 #include <LibGUI/Action.h>
 #include <LibGUI/Application.h>
 #include <LibGUI/Event.h>
+#include <LibGUI/Icon.h>
 #include <LibGUI/Painter.h>
 #include <LibGUI/Widget.h>
 #include <LibGUI/Window.h>
@@ -145,7 +146,9 @@ int main(int argc, char** argv)
     screensaver_window.update();
 
     window->show();
-    window->set_icon(Gfx::Bitmap::load_from_file("/res/icons/16x16/app-screensaver.png"));
+
+    auto app_icon = GUI::Icon::default_icon("app-screensaver");
+    window->set_icon(app_icon.bitmap_for_size(16));
 
     return app->exec();
 }