diff --git a/Libraries/LibWeb/CSS/Parser/CSSParser.cpp b/Libraries/LibWeb/CSS/Parser/CSSParser.cpp
index 991a9858ad..88780b6f1b 100644
--- a/Libraries/LibWeb/CSS/Parser/CSSParser.cpp
+++ b/Libraries/LibWeb/CSS/Parser/CSSParser.cpp
@@ -454,6 +454,16 @@ static Optional<CSS::ValueID> value_id_from_string(const String& string)
         return CSS::ValueID::LineThrough;
     if (string.equals_ignoring_case("blink"))
         return CSS::ValueID::Blink;
+    if (string.equals_ignoring_case("capitalize"))
+        return CSS::ValueID::Capitalize;
+    if (string.equals_ignoring_case("uppercase"))
+        return CSS::ValueID::Uppercase;
+    if (string.equals_ignoring_case("lowercase"))
+        return CSS::ValueID::Lowercase;
+    if (string.equals_ignoring_case("full-width"))
+        return CSS::ValueID::FullWidth;
+    if (string.equals_ignoring_case("full-size-kana"))
+        return CSS::ValueID::FullSizeKana;
     if (string.starts_with("-libweb-palette-", CaseSensitivity::CaseInsensitive))
         return value_id_for_palette_string(string.substring_view(16, string.length() - 16));
     return {};
diff --git a/Libraries/LibWeb/CSS/StyleProperties.cpp b/Libraries/LibWeb/CSS/StyleProperties.cpp
index 6af5ef0084..a0ee588764 100644
--- a/Libraries/LibWeb/CSS/StyleProperties.cpp
+++ b/Libraries/LibWeb/CSS/StyleProperties.cpp
@@ -430,4 +430,27 @@ Optional<CSS::TextDecorationLine> StyleProperties::text_decoration_line() const
     }
 }
 
+Optional<CSS::TextTransform> StyleProperties::text_transform() const
+{
+    auto value = property(CSS::PropertyID::TextTransform);
+    if (!value.has_value())
+        return {};
+    switch (value.value()->to_identifier()) {
+    case CSS::ValueID::None:
+        return CSS::TextTransform::None;
+    case CSS::ValueID::Lowercase:
+        return CSS::TextTransform::Lowercase;
+    case CSS::ValueID::Uppercase:
+        return CSS::TextTransform::Uppercase;
+    case CSS::ValueID::Capitalize:
+        return CSS::TextTransform::Capitalize;
+    case CSS::ValueID::FullWidth:
+        return CSS::TextTransform::FullWidth;
+    case CSS::ValueID::FullSizeKana:
+        return CSS::TextTransform::FullSizeKana;
+    default:
+        return {};
+    }
+}
+
 }
diff --git a/Libraries/LibWeb/CSS/StyleProperties.h b/Libraries/LibWeb/CSS/StyleProperties.h
index 78330438ba..4273edea35 100644
--- a/Libraries/LibWeb/CSS/StyleProperties.h
+++ b/Libraries/LibWeb/CSS/StyleProperties.h
@@ -67,6 +67,7 @@ public:
     Optional<CSS::WhiteSpace> white_space() const;
     Optional<CSS::LineStyle> line_style(CSS::PropertyID) const;
     Optional<CSS::TextDecorationLine> text_decoration_line() const;
+    Optional<CSS::TextTransform> text_transform() const;
 
     const Gfx::Font& font() const
     {
diff --git a/Libraries/LibWeb/CSS/StyleValue.h b/Libraries/LibWeb/CSS/StyleValue.h
index 8cf2dd47de..6523ff1a7b 100644
--- a/Libraries/LibWeb/CSS/StyleValue.h
+++ b/Libraries/LibWeb/CSS/StyleValue.h
@@ -151,6 +151,11 @@ enum class ValueID {
     Overline,
     LineThrough,
     Blink,
+    Capitalize,
+    Uppercase,
+    Lowercase,
+    FullWidth,
+    FullSizeKana,
 };
 
 enum class Position {
@@ -177,6 +182,15 @@ enum class TextDecorationLine {
     Blink,
 };
 
+enum class TextTransform {
+    None,
+    Capitalize,
+    Uppercase,
+    Lowercase,
+    FullWidth,
+    FullSizeKana,
+};
+
 enum class Display {
     None,
     Block,
diff --git a/Libraries/LibWeb/Layout/LayoutStyle.h b/Libraries/LibWeb/Layout/LayoutStyle.h
index 2c0b077ede..622fd67b40 100644
--- a/Libraries/LibWeb/Layout/LayoutStyle.h
+++ b/Libraries/LibWeb/Layout/LayoutStyle.h
@@ -40,6 +40,7 @@ public:
     static CSS::TextAlign text_align() { return CSS::TextAlign::Left; }
     static CSS::Position position() { return CSS::Position::Static; }
     static CSS::TextDecorationLine text_decoration_line() { return CSS::TextDecorationLine::None; }
+    static CSS::TextTransform text_transform() { return CSS::TextTransform::None; }
 };
 
 struct BorderData {
@@ -56,6 +57,7 @@ public:
     Optional<int> z_index() const { return m_z_index; }
     CSS::TextAlign text_align() const { return m_text_align; }
     CSS::TextDecorationLine text_decoration_line() const { return m_text_decoration_line; }
+    CSS::TextTransform text_transform() const { return m_text_transform; }
     CSS::Position position() const { return m_position; }
     CSS::WhiteSpace white_space() const { return m_white_space; }
     const CSS::Length& width() const { return m_width; }
@@ -80,6 +82,7 @@ protected:
     Optional<int> m_z_index;
     CSS::TextAlign m_text_align { InitialValues::text_align() };
     CSS::TextDecorationLine m_text_decoration_line { InitialValues::text_decoration_line() };
+    CSS::TextTransform m_text_transform { InitialValues::text_transform() };
     CSS::Position m_position { InitialValues::position() };
     CSS::WhiteSpace m_white_space { InitialValues::white_space() };
     CSS::Length m_width;
@@ -107,6 +110,7 @@ public:
     void set_z_index(Optional<int> value) { m_z_index = value; }
     void set_text_align(CSS::TextAlign text_align) { m_text_align = text_align; }
     void set_text_decoration_line(CSS::TextDecorationLine value) { m_text_decoration_line = value; }
+    void set_text_transform(CSS::TextTransform value) { m_text_transform = value; }
     void set_position(CSS::Position position) { m_position = position; }
     void set_white_space(CSS::WhiteSpace value) { m_white_space = value; }
     void set_width(const CSS::Length& width) { m_width = width; }
diff --git a/Libraries/LibWeb/Layout/Node.cpp b/Libraries/LibWeb/Layout/Node.cpp
index adf13069a6..bb1f62bab5 100644
--- a/Libraries/LibWeb/Layout/Node.cpp
+++ b/Libraries/LibWeb/Layout/Node.cpp
@@ -243,6 +243,10 @@ void NodeWithStyle::apply_style(const CSS::StyleProperties& specified_style)
     if (text_decoration_line.has_value())
         style.set_text_decoration_line(text_decoration_line.value());
 
+    auto text_transform = specified_style.text_transform();
+    if (text_transform.has_value())
+        style.set_text_transform(text_transform.value());
+
     style.set_z_index(specified_style.z_index());
     style.set_width(specified_style.length_or_fallback(CSS::PropertyID::Width, {}));
     style.set_min_width(specified_style.length_or_fallback(CSS::PropertyID::MinWidth, {}));
diff --git a/Libraries/LibWeb/Layout/TextNode.cpp b/Libraries/LibWeb/Layout/TextNode.cpp
index 8b241022b8..472c1bb4db 100644
--- a/Libraries/LibWeb/Layout/TextNode.cpp
+++ b/Libraries/LibWeb/Layout/TextNode.cpp
@@ -89,10 +89,10 @@ void TextNode::paint_fragment(PaintContext& context, const LineBoxFragment& frag
 
         // FIXME: text-transform should be done already in layout, since uppercase glyphs may be wider than lowercase, etc.
         auto text = m_text_for_rendering;
-        auto text_transform = specified_style().string_or_fallback(CSS::PropertyID::TextTransform, "none");
-        if (text_transform == "uppercase")
+        auto text_transform = style().text_transform();
+        if (text_transform == CSS::TextTransform::Uppercase)
             text = m_text_for_rendering.to_uppercase();
-        if (text_transform == "lowercase")
+        if (text_transform == CSS::TextTransform::Lowercase)
             text = m_text_for_rendering.to_lowercase();
 
         painter.draw_text(enclosing_int_rect(fragment.absolute_rect()), text.substring_view(fragment.start(), fragment.length()), Gfx::TextAlignment::CenterLeft, color);