diff --git a/Libraries/LibWeb/DOM/Node.cpp b/Libraries/LibWeb/DOM/Node.cpp
index d24d426e1a4..d9b07a30e65 100644
--- a/Libraries/LibWeb/DOM/Node.cpp
+++ b/Libraries/LibWeb/DOM/Node.cpp
@@ -1537,7 +1537,8 @@ bool Node::is_editable() const
         return false;
 
     // it does not have a contenteditable attribute set to the false state;
-    if (is<HTML::HTMLElement>(this) && static_cast<HTML::HTMLElement const&>(*this).content_editable_state() == HTML::ContentEditableState::False)
+    auto const* html_element = as_if<HTML::HTMLElement>(*this);
+    if (html_element && html_element->content_editable_state() == HTML::ContentEditableState::False)
         return false;
 
     // its parent is an editing host or editable;
@@ -1551,7 +1552,7 @@ bool Node::is_editable() const
         return false;
 
     // and either it is an HTML element,
-    if (is<HTML::HTMLElement>(this))
+    if (html_element)
         return true;
 
     // or it is an svg or math element,
@@ -1566,17 +1567,18 @@ bool Node::is_editable() const
 bool Node::is_editing_host() const
 {
     // NOTE: Both conditions below require this to be an HTML element.
-    if (!is<HTML::HTMLElement>(this))
+    auto const* html_element = as_if<HTML::HTMLElement>(*this);
+    if (!html_element)
         return false;
 
     // An editing host is either an HTML element with its contenteditable attribute in the true state or
     // plaintext-only state,
-    auto state = static_cast<HTML::HTMLElement const&>(*this).content_editable_state();
+    auto state = html_element->content_editable_state();
     if (state == HTML::ContentEditableState::True || state == HTML::ContentEditableState::PlaintextOnly)
         return true;
 
     // or a child HTML element of a Document whose design mode enabled is true.
-    return is<Document>(parent()) && static_cast<Document const&>(*parent()).design_mode_enabled_state();
+    return is<Document>(parent()) && as<Document>(*parent()).design_mode_enabled_state();
 }
 
 // https://w3c.github.io/editing/docs/execCommand/#editing-host-of
diff --git a/Libraries/LibWeb/Editing/Commands.cpp b/Libraries/LibWeb/Editing/Commands.cpp
index 6f6260cec75..0f3df614ecf 100644
--- a/Libraries/LibWeb/Editing/Commands.cpp
+++ b/Libraries/LibWeb/Editing/Commands.cpp
@@ -383,7 +383,7 @@ bool command_delete_action(DOM::Document& document, Utf16String const&)
     //     is an hr, or the child is a br whose previousSibling is either a br or not an inline
     //     node:
     if (offset == 0 && is<DOM::Element>(offset_minus_one_child.ptr())) {
-        auto& child_element = static_cast<DOM::Element&>(*offset_minus_one_child);
+        auto& child_element = as<DOM::Element>(*offset_minus_one_child);
         auto* previous_sibling = child_element.previous_sibling();
         if (is<HTML::HTMLHRElement>(child_element)
             || (is<HTML::HTMLBRElement>(child_element) && previous_sibling && (is<HTML::HTMLBRElement>(*previous_sibling) || !is_inline_node(*previous_sibling)))) {
@@ -1477,7 +1477,7 @@ bool command_insert_paragraph_action(DOM::Document& document, Utf16String const&
     //     or "div":
     if (container->is_editable() && is_single_line_container(*container) && is_in_same_editing_host(*container, *node)
         && is<DOM::Element>(*container)
-        && static_cast<DOM::Element&>(*container).local_name().is_one_of(HTML::TagNames::p, HTML::TagNames::div)) {
+        && as<DOM::Element>(*container).local_name().is_one_of(HTML::TagNames::p, HTML::TagNames::div)) {
         // 1. Let outer container equal container.
         auto outer_container = container;
 
@@ -1486,7 +1486,7 @@ bool command_insert_paragraph_action(DOM::Document& document, Utf16String const&
         auto is_li_dt_or_dd = [](DOM::Element const& node) {
             return node.local_name().is_one_of(HTML::TagNames::li, HTML::TagNames::dt, HTML::TagNames::dd);
         };
-        while (!is<DOM::Element>(*outer_container) || !is_li_dt_or_dd(static_cast<DOM::Element&>(*outer_container))) {
+        while (!is<DOM::Element>(*outer_container) || !is_li_dt_or_dd(as<DOM::Element>(*outer_container))) {
             auto outer_container_parent = outer_container->parent();
             if (!outer_container_parent->is_editable())
                 break;
@@ -1494,7 +1494,7 @@ bool command_insert_paragraph_action(DOM::Document& document, Utf16String const&
         }
 
         // 3. If outer container is a dd or dt or li, set container to outer container.
-        if (is<DOM::Element>(*outer_container) && is_li_dt_or_dd(static_cast<DOM::Element&>(*outer_container)))
+        if (is<DOM::Element>(*outer_container) && is_li_dt_or_dd(as<DOM::Element>(*outer_container)))
             container = outer_container;
     }
 
diff --git a/Libraries/LibWeb/Editing/Internal/Algorithms.cpp b/Libraries/LibWeb/Editing/Internal/Algorithms.cpp
index e0a45627804..ac54bfb5c00 100644
--- a/Libraries/LibWeb/Editing/Internal/Algorithms.cpp
+++ b/Libraries/LibWeb/Editing/Internal/Algorithms.cpp
@@ -7,7 +7,6 @@
 #include <LibGfx/Color.h>
 #include <LibWeb/CSS/Parser/Parser.h>
 #include <LibWeb/CSS/StyleComputer.h>
-#include <LibWeb/CSS/StyleValues/ColorStyleValue.h>
 #include <LibWeb/CSS/StyleValues/DisplayStyleValue.h>
 #include <LibWeb/CSS/StyleValues/KeywordStyleValue.h>
 #include <LibWeb/CSS/StyleValues/StyleValueList.h>
@@ -35,9 +34,7 @@
 #include <LibWeb/HTML/HTMLTableSectionElement.h>
 #include <LibWeb/HTML/HTMLUListElement.h>
 #include <LibWeb/Infra/CharacterTypes.h>
-#include <LibWeb/Layout/BreakNode.h>
 #include <LibWeb/Layout/Node.h>
-#include <LibWeb/Layout/TextNode.h>
 #include <LibWeb/Namespace.h>
 #include <LibWeb/Painting/TextPaintable.h>