diff --git a/Libraries/LibWeb/Layout/InlineNode.h b/Libraries/LibWeb/Layout/InlineNode.h
index f13dcc4494..004e8b81c5 100644
--- a/Libraries/LibWeb/Layout/InlineNode.h
+++ b/Libraries/LibWeb/Layout/InlineNode.h
@@ -35,6 +35,13 @@ public:
     InlineNode(DOM::Document&, DOM::Element&, NonnullRefPtr<CSS::StyleProperties>);
     virtual ~InlineNode() override;
     virtual const char* class_name() const override { return "InlineNode"; }
+
+private:
+    virtual bool is_inline_node() const final { return true; }
 };
 
 }
+
+AK_BEGIN_TYPE_TRAITS(Web::Layout::InlineNode)
+static bool is_type(const Web::Layout::Node& layout_node) { return layout_node.is_inline_node(); }
+AK_END_TYPE_TRAITS()
diff --git a/Libraries/LibWeb/Layout/Node.h b/Libraries/LibWeb/Layout/Node.h
index 512d4b3bd5..8e3bb0c3c1 100644
--- a/Libraries/LibWeb/Layout/Node.h
+++ b/Libraries/LibWeb/Layout/Node.h
@@ -101,6 +101,7 @@ public:
     virtual bool is_check_box() const { return false; }
     virtual bool is_button() const { return false; }
     virtual bool is_list_item() const { return false; }
+    virtual bool is_inline_node() const { return false; }
     bool has_style() const { return m_has_style; }
 
     virtual bool can_have_children() const { return true; }