diff --git a/SharedGraphics/GraphicsBitmap.cpp b/SharedGraphics/GraphicsBitmap.cpp
index 8a7621e4e6..5d9b85b382 100644
--- a/SharedGraphics/GraphicsBitmap.cpp
+++ b/SharedGraphics/GraphicsBitmap.cpp
@@ -91,3 +91,12 @@ void GraphicsBitmap::set_mmap_name(const StringView& name)
     ASSERT(m_needs_munmap);
     ::set_mmap_name(m_data, size_in_bytes(), name.characters());
 }
+
+void GraphicsBitmap::fill(Color color)
+{
+    ASSERT(m_format == GraphicsBitmap::Format::RGB32 || m_format == GraphicsBitmap::Format::RGBA32);
+    for (int y = 0; y < height(); ++y) {
+        auto* scanline = this->scanline(y);
+        fast_dword_fill(scanline, color.value(), width());
+    }
+}
diff --git a/SharedGraphics/GraphicsBitmap.h b/SharedGraphics/GraphicsBitmap.h
index 9e0a24525a..62e33a0e35 100644
--- a/SharedGraphics/GraphicsBitmap.h
+++ b/SharedGraphics/GraphicsBitmap.h
@@ -39,6 +39,8 @@ public:
     size_t pitch() const { return m_pitch; }
     int shared_buffer_id() const { return m_shared_buffer ? m_shared_buffer->shared_buffer_id() : -1; }
 
+    void fill(Color);
+
     bool has_alpha_channel() const { return m_format == Format::RGBA32; }
     Format format() const { return m_format; }