diff --git a/icons.toml b/icons.toml
index b705806..f35f5e2 100644
--- a/icons.toml
+++ b/icons.toml
@@ -17,4 +17,6 @@ icons = [
   "crop-filled",
   "arrow-up-right-filled",
   "rectangle-landscape-regular",
+  "paint-bucket-filled",
+  "paint-bucket-regular",
 ]
diff --git a/src/sketch_board.rs b/src/sketch_board.rs
index 437d224..f4330f4 100644
--- a/src/sketch_board.rs
+++ b/src/sketch_board.rs
@@ -348,6 +348,12 @@ impl SketchBoard {
             }
             ToolbarEvent::Undo => self.handle_undo(),
             ToolbarEvent::Redo => self.handle_redo(),
+            ToolbarEvent::ToggleFill => {
+                self.style.fill = !self.style.fill;
+                self.active_tool
+                    .borrow_mut()
+                    .handle_event(ToolEvent::StyleChanged(self.style))
+            },
         }
     }
 }
diff --git a/src/style.rs b/src/style.rs
index 1dcc045..017b4b4 100644
--- a/src/style.rs
+++ b/src/style.rs
@@ -1,6 +1,6 @@
 use std::borrow::Cow;
 
-use femtovg::Paint;
+use femtovg::{Paint};
 use gdk_pixbuf::{
     glib::{Variant, VariantTy},
     prelude::{StaticVariantType, ToVariant},
@@ -15,6 +15,7 @@ use crate::configuration::APP_CONFIG;
 pub struct Style {
     pub color: Color,
     pub size: Size,
+    pub fill: bool,
 }
 
 #[derive(Clone, Copy, Debug, PartialEq, Eq, PartialOrd, Ord)]
diff --git a/src/tools/rectangle.rs b/src/tools/rectangle.rs
index 3928893..ed6fc93 100644
--- a/src/tools/rectangle.rs
+++ b/src/tools/rectangle.rs
@@ -32,7 +32,11 @@ impl Drawable for Rectangle {
         let mut path = Path::new();
         path.rect(self.top_left.x, self.top_left.y, size.x, size.y);
 
-        canvas.stroke_path(&path, &self.style.into());
+        if self.style.fill {
+            canvas.fill_path(&path, &self.style.into());
+        } else {
+            canvas.stroke_path(&path, &self.style.into());
+        }
         canvas.restore();
 
         Ok(())
diff --git a/src/ui/toolbars.rs b/src/ui/toolbars.rs
index 2d22e72..722c19a 100644
--- a/src/ui/toolbars.rs
+++ b/src/ui/toolbars.rs
@@ -37,6 +37,7 @@ pub enum ToolbarEvent {
     Undo,
     SaveFile,
     CopyClipboard,
+    ToggleFill,
 }
 
 #[derive(Debug, Copy, Clone)]
@@ -398,7 +399,22 @@ impl Component for StyleToolbar {
                 set_tooltip: "Large size",
                 ActionablePlus::set_action::<SizeAction>: Size::Large,
             },
+            gtk::Button {
+                set_focusable: false,
+                set_hexpand: false,
 
+                set_icon_name: "paint-bucket-regular",
+                set_tooltip: "Fill shape",
+                connect_clicked[sender] => move |button| {
+                    sender.output_sender().emit(ToolbarEvent::ToggleFill);
+                    let new_icon = if button.icon_name() == Some("paint-bucket-regular".into()) {
+                        "paint-bucket-filled"
+                    } else {
+                        "paint-bucket-regular"
+                    };
+                    button.set_icon_name(new_icon);
+                },
+            },
         },
     }