diff --git a/Userland/Libraries/LibWeb/DOM/Element.cpp b/Userland/Libraries/LibWeb/DOM/Element.cpp
index 118dfa772b..88bce90727 100644
--- a/Userland/Libraries/LibWeb/DOM/Element.cpp
+++ b/Userland/Libraries/LibWeb/DOM/Element.cpp
@@ -160,6 +160,14 @@ WebIDL::ExceptionOr<void> Element::set_attribute(DeprecatedFlyString const& name
     return {};
 }
 
+WebIDL::ExceptionOr<void> Element::set_attribute(DeprecatedFlyString const& name, Optional<String> const& value)
+{
+    if (!value.has_value())
+        return set_attribute(name, DeprecatedString {});
+
+    return set_attribute(name, value->to_deprecated_string());
+}
+
 // https://dom.spec.whatwg.org/#validate-and-extract
 WebIDL::ExceptionOr<QualifiedName> validate_and_extract(JS::Realm& realm, DeprecatedFlyString namespace_, DeprecatedFlyString qualified_name)
 {
diff --git a/Userland/Libraries/LibWeb/DOM/Element.h b/Userland/Libraries/LibWeb/DOM/Element.h
index 512f578889..9a28516a23 100644
--- a/Userland/Libraries/LibWeb/DOM/Element.h
+++ b/Userland/Libraries/LibWeb/DOM/Element.h
@@ -96,6 +96,7 @@ public:
     DeprecatedString get_attribute_value(DeprecatedFlyString const& local_name, DeprecatedFlyString const& namespace_ = {}) const;
 
     virtual WebIDL::ExceptionOr<void> set_attribute(DeprecatedFlyString const& name, DeprecatedString const& value);
+    WebIDL::ExceptionOr<void> set_attribute(DeprecatedFlyString const& name, Optional<String> const& value);
     WebIDL::ExceptionOr<void> set_attribute_ns(DeprecatedFlyString const& namespace_, DeprecatedFlyString const& qualified_name, DeprecatedString const& value);
     void set_attribute_value(DeprecatedFlyString const& local_name, DeprecatedString const& value, DeprecatedFlyString const& prefix = {}, DeprecatedFlyString const& namespace_ = {});
     WebIDL::ExceptionOr<JS::GCPtr<Attr>> set_attribute_node(Attr&);
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLBRElement.idl b/Userland/Libraries/LibWeb/HTML/HTMLBRElement.idl
index 24109bc6f3..f4b1a5bee4 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLBRElement.idl
+++ b/Userland/Libraries/LibWeb/HTML/HTMLBRElement.idl
@@ -1,7 +1,7 @@
 #import <HTML/HTMLElement.idl>
 
 // https://html.spec.whatwg.org/multipage/semantics.html#htmlbrelement
-[Exposed=Window, UseDeprecatedAKString]
+[Exposed=Window]
 interface HTMLBRElement : HTMLElement {
 
     [HTMLConstructor] constructor();
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLBodyElement.idl b/Userland/Libraries/LibWeb/HTML/HTMLBodyElement.idl
index afb867caad..47ae014d18 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLBodyElement.idl
+++ b/Userland/Libraries/LibWeb/HTML/HTMLBodyElement.idl
@@ -2,7 +2,7 @@
 #import <HTML/HTMLElement.idl>
 
 // https://html.spec.whatwg.org/multipage/sections.html#htmlbodyelement
-[Exposed=Window, UseDeprecatedAKString]
+[Exposed=Window]
 interface HTMLBodyElement : HTMLElement {
 
     [HTMLConstructor] constructor();
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLDataElement.idl b/Userland/Libraries/LibWeb/HTML/HTMLDataElement.idl
index a148b50d1b..707351f8c7 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLDataElement.idl
+++ b/Userland/Libraries/LibWeb/HTML/HTMLDataElement.idl
@@ -1,7 +1,7 @@
 #import <HTML/HTMLElement.idl>
 
 // https://html.spec.whatwg.org/multipage/semantics.html#htmldataelement
-[Exposed=Window, UseDeprecatedAKString]
+[Exposed=Window]
 interface HTMLDataElement : HTMLElement {
 
     [HTMLConstructor] constructor();
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLDivElement.idl b/Userland/Libraries/LibWeb/HTML/HTMLDivElement.idl
index a264a4e53a..69e56031f4 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLDivElement.idl
+++ b/Userland/Libraries/LibWeb/HTML/HTMLDivElement.idl
@@ -1,7 +1,7 @@
 #import <HTML/HTMLElement.idl>
 
 // https://html.spec.whatwg.org/multipage/semantics.html#htmldivelement
-[Exposed=Window, UseDeprecatedAKString]
+[Exposed=Window]
 interface HTMLDivElement : HTMLElement {
 
     [HTMLConstructor] constructor();
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLEmbedElement.idl b/Userland/Libraries/LibWeb/HTML/HTMLEmbedElement.idl
index 109bfe001e..2cf3c34c1b 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLEmbedElement.idl
+++ b/Userland/Libraries/LibWeb/HTML/HTMLEmbedElement.idl
@@ -1,7 +1,7 @@
 #import <HTML/HTMLElement.idl>
 
 // https://html.spec.whatwg.org/multipage/semantics.html#htmlembedelement
-[Exposed=Window, UseDeprecatedAKString]
+[Exposed=Window]
 interface HTMLEmbedElement : HTMLElement {
 
     [HTMLConstructor] constructor();
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLFontElement.idl b/Userland/Libraries/LibWeb/HTML/HTMLFontElement.idl
index b778b671a9..9121dd32b3 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLFontElement.idl
+++ b/Userland/Libraries/LibWeb/HTML/HTMLFontElement.idl
@@ -1,7 +1,7 @@
 #import <HTML/HTMLElement.idl>
 
 // https://html.spec.whatwg.org/multipage/semantics.html#htmlfontelement
-[Exposed=Window, UseDeprecatedAKString]
+[Exposed=Window]
 interface HTMLFontElement : HTMLElement {
 
     [HTMLConstructor] constructor();
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLFrameElement.idl b/Userland/Libraries/LibWeb/HTML/HTMLFrameElement.idl
index 8290bbf894..89c4e229c5 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLFrameElement.idl
+++ b/Userland/Libraries/LibWeb/HTML/HTMLFrameElement.idl
@@ -1,7 +1,7 @@
 #import <HTML/HTMLElement.idl>
 
 // https://html.spec.whatwg.org/multipage/semantics.html#htmlframeelement
-[Exposed=Window, UseDeprecatedAKString]
+[Exposed=Window]
 interface HTMLFrameElement : HTMLElement {
 
     [HTMLConstructor] constructor();
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLFrameSetElement.idl b/Userland/Libraries/LibWeb/HTML/HTMLFrameSetElement.idl
index 10160ae86b..9e984482af 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLFrameSetElement.idl
+++ b/Userland/Libraries/LibWeb/HTML/HTMLFrameSetElement.idl
@@ -2,7 +2,7 @@
 #import <HTML/HTMLElement.idl>
 
 // https://html.spec.whatwg.org/multipage/semantics.html#htmlframesetelement
-[Exposed=Window, UseDeprecatedAKString]
+[Exposed=Window]
 interface HTMLFrameSetElement : HTMLElement {
 
     [HTMLConstructor] constructor();
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLHRElement.idl b/Userland/Libraries/LibWeb/HTML/HTMLHRElement.idl
index cb08c8b5dd..172e7a31a4 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLHRElement.idl
+++ b/Userland/Libraries/LibWeb/HTML/HTMLHRElement.idl
@@ -1,7 +1,7 @@
 #import <HTML/HTMLElement.idl>
 
 // https://html.spec.whatwg.org/multipage/grouping-content.html#htmlhrelement
-[Exposed=Window, UseDeprecatedAKString]
+[Exposed=Window]
 interface HTMLHRElement : HTMLElement {
 
     [HTMLConstructor] constructor();
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLHeadingElement.idl b/Userland/Libraries/LibWeb/HTML/HTMLHeadingElement.idl
index 605d0242ea..d1df2dcca2 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLHeadingElement.idl
+++ b/Userland/Libraries/LibWeb/HTML/HTMLHeadingElement.idl
@@ -1,7 +1,7 @@
 #import <HTML/HTMLElement.idl>
 
 // https://html.spec.whatwg.org/multipage/semantics.html#htmlheadingelement
-[Exposed=Window, UseDeprecatedAKString]
+[Exposed=Window]
 interface HTMLHeadingElement : HTMLElement {
 
     [HTMLConstructor] constructor();
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLHtmlElement.idl b/Userland/Libraries/LibWeb/HTML/HTMLHtmlElement.idl
index c09ac5cece..8c27c495ae 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLHtmlElement.idl
+++ b/Userland/Libraries/LibWeb/HTML/HTMLHtmlElement.idl
@@ -1,7 +1,7 @@
 #import <HTML/HTMLElement.idl>
 
 // https://html.spec.whatwg.org/multipage/semantics.html#htmlhtmlelement
-[Exposed=Window, UseDeprecatedAKString]
+[Exposed=Window]
 interface HTMLHtmlElement : HTMLElement {
 
     [HTMLConstructor] constructor();
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLIFrameElement.idl b/Userland/Libraries/LibWeb/HTML/HTMLIFrameElement.idl
index cd86fd3439..bff188e026 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLIFrameElement.idl
+++ b/Userland/Libraries/LibWeb/HTML/HTMLIFrameElement.idl
@@ -2,7 +2,7 @@
 #import <DOM/Document.idl>
 
 // https://html.spec.whatwg.org/multipage/iframe-embed-object.html#htmliframeelement
-[Exposed=Window, UseDeprecatedAKString]
+[Exposed=Window]
 interface HTMLIFrameElement : HTMLElement {
 
     [HTMLConstructor] constructor();
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLImageElement.idl b/Userland/Libraries/LibWeb/HTML/HTMLImageElement.idl
index f81f4a08b7..4304041b62 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLImageElement.idl
+++ b/Userland/Libraries/LibWeb/HTML/HTMLImageElement.idl
@@ -1,7 +1,7 @@
 #import <HTML/HTMLElement.idl>
 
 // https://html.spec.whatwg.org/multipage/embedded-content.html#htmlimageelement
-[Exposed=Window, LegacyFactoryFunction=Image(optional unsigned long width, optional unsigned long height), UseDeprecatedAKString]
+[Exposed=Window, LegacyFactoryFunction=Image(optional unsigned long width, optional unsigned long height)]
 interface HTMLImageElement : HTMLElement {
 
     [HTMLConstructor] constructor();
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLLIElement.idl b/Userland/Libraries/LibWeb/HTML/HTMLLIElement.idl
index e652f9fb7e..791e297972 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLLIElement.idl
+++ b/Userland/Libraries/LibWeb/HTML/HTMLLIElement.idl
@@ -1,7 +1,7 @@
 #import <HTML/HTMLElement.idl>
 
 // https://html.spec.whatwg.org/multipage/grouping-content.html#htmllielement
-[Exposed=Window, UseDeprecatedAKString]
+[Exposed=Window]
 interface HTMLLIElement : HTMLElement {
 
     [HTMLConstructor] constructor();
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLLabelElement.idl b/Userland/Libraries/LibWeb/HTML/HTMLLabelElement.idl
index 68a98cb7c4..002ecee32c 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLLabelElement.idl
+++ b/Userland/Libraries/LibWeb/HTML/HTMLLabelElement.idl
@@ -1,7 +1,7 @@
 #import <HTML/HTMLElement.idl>
 
 // https://html.spec.whatwg.org/multipage/forms.html#htmllabelelement
-[Exposed=Window, UseDeprecatedAKString]
+[Exposed=Window]
 interface HTMLLabelElement : HTMLElement {
 
     [HTMLConstructor] constructor();
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLLegendElement.idl b/Userland/Libraries/LibWeb/HTML/HTMLLegendElement.idl
index cb74b3f0aa..506853c9d9 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLLegendElement.idl
+++ b/Userland/Libraries/LibWeb/HTML/HTMLLegendElement.idl
@@ -1,7 +1,7 @@
 #import <HTML/HTMLElement.idl>
 
 // https://html.spec.whatwg.org/multipage/form-elements.html#htmllegendelement
-[Exposed=Window, UseDeprecatedAKString]
+[Exposed=Window]
 interface HTMLLegendElement : HTMLElement {
 
     [HTMLConstructor] constructor();
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLLinkElement.idl b/Userland/Libraries/LibWeb/HTML/HTMLLinkElement.idl
index 8d07677ed9..f503297d1d 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLLinkElement.idl
+++ b/Userland/Libraries/LibWeb/HTML/HTMLLinkElement.idl
@@ -1,7 +1,7 @@
 #import <HTML/HTMLElement.idl>
 
 // https://html.spec.whatwg.org/multipage/semantics.html#htmllinkelement
-[Exposed=Window, UseDeprecatedAKString]
+[Exposed=Window]
 interface HTMLLinkElement : HTMLElement {
 
     [HTMLConstructor] constructor();
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLMapElement.idl b/Userland/Libraries/LibWeb/HTML/HTMLMapElement.idl
index 70a18a3562..79da6e07ee 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLMapElement.idl
+++ b/Userland/Libraries/LibWeb/HTML/HTMLMapElement.idl
@@ -1,7 +1,7 @@
 #import <HTML/HTMLElement.idl>
 
 // https://html.spec.whatwg.org/multipage/image-maps.html#htmlmapelement
-[Exposed=Window, UseDeprecatedAKString]
+[Exposed=Window]
 interface HTMLMapElement : HTMLElement {
 
     [HTMLConstructor] constructor();
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLMarqueeElement.idl b/Userland/Libraries/LibWeb/HTML/HTMLMarqueeElement.idl
index 40a0aae52d..b9fd06c474 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLMarqueeElement.idl
+++ b/Userland/Libraries/LibWeb/HTML/HTMLMarqueeElement.idl
@@ -1,7 +1,7 @@
 #import <HTML/HTMLElement.idl>
 
 // https://html.spec.whatwg.org/multipage/obsolete.html#htmlmarqueeelement
-[Exposed=Window, UseDeprecatedAKString]
+[Exposed=Window]
 interface HTMLMarqueeElement : HTMLElement {
 
     [HTMLConstructor] constructor();
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLMetaElement.idl b/Userland/Libraries/LibWeb/HTML/HTMLMetaElement.idl
index 9845d869be..35bffbd246 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLMetaElement.idl
+++ b/Userland/Libraries/LibWeb/HTML/HTMLMetaElement.idl
@@ -1,7 +1,7 @@
 #import <HTML/HTMLElement.idl>
 
 // https://html.spec.whatwg.org/multipage/semantics.html#htmlmetaelement
-[Exposed=Window, UseDeprecatedAKString]
+[Exposed=Window]
 interface HTMLMetaElement : HTMLElement {
 
     [HTMLConstructor] constructor();
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLModElement.idl b/Userland/Libraries/LibWeb/HTML/HTMLModElement.idl
index 69b406f995..b3312f432b 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLModElement.idl
+++ b/Userland/Libraries/LibWeb/HTML/HTMLModElement.idl
@@ -1,7 +1,7 @@
 #import <HTML/HTMLElement.idl>
 
 // https://html.spec.whatwg.org/multipage/edits.html#htmlmodelement
-[Exposed=Window, UseDeprecatedAKString]
+[Exposed=Window]
 interface HTMLModElement : HTMLElement {
 
     [HTMLConstructor] constructor();
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLOListElement.idl b/Userland/Libraries/LibWeb/HTML/HTMLOListElement.idl
index 6d1bfa1923..61f70ae431 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLOListElement.idl
+++ b/Userland/Libraries/LibWeb/HTML/HTMLOListElement.idl
@@ -1,7 +1,7 @@
 #import <HTML/HTMLElement.idl>
 
 // https://html.spec.whatwg.org/multipage/grouping-content.html#htmlolistelement
-[Exposed=Window, UseDeprecatedAKString]
+[Exposed=Window]
 interface HTMLOListElement : HTMLElement {
 
     [HTMLConstructor] constructor();
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLOptGroupElement.idl b/Userland/Libraries/LibWeb/HTML/HTMLOptGroupElement.idl
index ecf52ac927..04b5872904 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLOptGroupElement.idl
+++ b/Userland/Libraries/LibWeb/HTML/HTMLOptGroupElement.idl
@@ -1,7 +1,7 @@
 #import <HTML/HTMLElement.idl>
 
 // https://html.spec.whatwg.org/multipage/form-elements.html#htmloptgroupelement
-[Exposed=Window, UseDeprecatedAKString]
+[Exposed=Window]
 interface HTMLOptGroupElement : HTMLElement {
 
     [HTMLConstructor] constructor();
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLParagraphElement.idl b/Userland/Libraries/LibWeb/HTML/HTMLParagraphElement.idl
index eba322cd99..0ca919f2e9 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLParagraphElement.idl
+++ b/Userland/Libraries/LibWeb/HTML/HTMLParagraphElement.idl
@@ -1,7 +1,7 @@
 #import <HTML/HTMLElement.idl>
 
 // https://html.spec.whatwg.org/multipage/semantics.html#htmlparagraphelement
-[Exposed=Window, UseDeprecatedAKString]
+[Exposed=Window]
 interface HTMLParagraphElement : HTMLElement {
 
     [HTMLConstructor] constructor();
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLParamElement.idl b/Userland/Libraries/LibWeb/HTML/HTMLParamElement.idl
index 629be0afc1..3623c58f08 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLParamElement.idl
+++ b/Userland/Libraries/LibWeb/HTML/HTMLParamElement.idl
@@ -1,7 +1,7 @@
 #import <HTML/HTMLElement.idl>
 
 // https://html.spec.whatwg.org/multipage/obsolete.html#htmlparamelement
-[Exposed=Window, UseDeprecatedAKString]
+[Exposed=Window]
 interface HTMLParamElement : HTMLElement {
 
     [HTMLConstructor] constructor();
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLQuoteElement.idl b/Userland/Libraries/LibWeb/HTML/HTMLQuoteElement.idl
index 77638027a6..623f73d3cd 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLQuoteElement.idl
+++ b/Userland/Libraries/LibWeb/HTML/HTMLQuoteElement.idl
@@ -1,7 +1,7 @@
 #import <HTML/HTMLElement.idl>
 
 // https://html.spec.whatwg.org/multipage/grouping-content.html#htmlquoteelement
-[Exposed=Window, UseDeprecatedAKString]
+[Exposed=Window]
 interface HTMLQuoteElement : HTMLElement {
 
     [HTMLConstructor] constructor();
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLSlotElement.idl b/Userland/Libraries/LibWeb/HTML/HTMLSlotElement.idl
index d34e5eced4..64cb999bd8 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLSlotElement.idl
+++ b/Userland/Libraries/LibWeb/HTML/HTMLSlotElement.idl
@@ -1,7 +1,7 @@
 #import <HTML/HTMLElement.idl>
 
 // https://html.spec.whatwg.org/multipage/scripting.html#htmlslotelement
-[Exposed=Window, UseDeprecatedAKString]
+[Exposed=Window]
 interface HTMLSlotElement : HTMLElement {
 
     [HTMLConstructor] constructor();
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLSourceElement.idl b/Userland/Libraries/LibWeb/HTML/HTMLSourceElement.idl
index e918b5e313..49aeb6d57a 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLSourceElement.idl
+++ b/Userland/Libraries/LibWeb/HTML/HTMLSourceElement.idl
@@ -1,7 +1,7 @@
 #import <HTML/HTMLElement.idl>
 
 // https://html.spec.whatwg.org/multipage/embedded-content.html#htmlsourceelement
-[Exposed=Window, UseDeprecatedAKString]
+[Exposed=Window]
 interface HTMLSourceElement : HTMLElement {
 
     [HTMLConstructor] constructor();
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLStyleElement.idl b/Userland/Libraries/LibWeb/HTML/HTMLStyleElement.idl
index ad1031e6c4..600459b4dd 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLStyleElement.idl
+++ b/Userland/Libraries/LibWeb/HTML/HTMLStyleElement.idl
@@ -3,7 +3,7 @@
 #import <HTML/HTMLElement.idl>
 
 // https://html.spec.whatwg.org/multipage/semantics.html#htmlstyleelement
-[Exposed=Window, UseDeprecatedAKString]
+[Exposed=Window]
 interface HTMLStyleElement : HTMLElement {
     [HTMLConstructor] constructor();
 
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLTableCaptionElement.idl b/Userland/Libraries/LibWeb/HTML/HTMLTableCaptionElement.idl
index e577bdd819..b0413d9dae 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLTableCaptionElement.idl
+++ b/Userland/Libraries/LibWeb/HTML/HTMLTableCaptionElement.idl
@@ -1,7 +1,7 @@
 #import <HTML/HTMLElement.idl>
 
 // https://html.spec.whatwg.org/multipage/tables.html#htmltablecaptionelement
-[Exposed=Window, UseDeprecatedAKString]
+[Exposed=Window]
 interface HTMLTableCaptionElement : HTMLElement {
 
     [HTMLConstructor] constructor();
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLTableCellElement.idl b/Userland/Libraries/LibWeb/HTML/HTMLTableCellElement.idl
index 6357509ffe..d9fddd3bbb 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLTableCellElement.idl
+++ b/Userland/Libraries/LibWeb/HTML/HTMLTableCellElement.idl
@@ -1,7 +1,7 @@
 #import <HTML/HTMLElement.idl>
 
 // https://html.spec.whatwg.org/multipage/tables.html#htmltablecellelement
-[Exposed=Window, UseDeprecatedAKString]
+[Exposed=Window]
 interface HTMLTableCellElement : HTMLElement {
 
     [HTMLConstructor] constructor();
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLTableColElement.idl b/Userland/Libraries/LibWeb/HTML/HTMLTableColElement.idl
index 89ebfd45a1..b84f50403b 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLTableColElement.idl
+++ b/Userland/Libraries/LibWeb/HTML/HTMLTableColElement.idl
@@ -1,7 +1,7 @@
 #import <HTML/HTMLElement.idl>
 
 // https://html.spec.whatwg.org/multipage/tables.html#htmltablecolelement
-[Exposed=Window, UseDeprecatedAKString]
+[Exposed=Window]
 interface HTMLTableColElement : HTMLElement {
 
     [HTMLConstructor] constructor();
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLTableElement.idl b/Userland/Libraries/LibWeb/HTML/HTMLTableElement.idl
index 4f4b8a94db..d6a2b1c8e1 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLTableElement.idl
+++ b/Userland/Libraries/LibWeb/HTML/HTMLTableElement.idl
@@ -5,7 +5,7 @@
 #import <DOM/HTMLCollection.idl>
 
 // https://html.spec.whatwg.org/multipage/tables.html#htmltableelement
-[Exposed=Window, UseDeprecatedAKString]
+[Exposed=Window]
 interface HTMLTableElement : HTMLElement {
 
     [HTMLConstructor] constructor();
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLTableRowElement.idl b/Userland/Libraries/LibWeb/HTML/HTMLTableRowElement.idl
index 6ca81df31b..9a35671b75 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLTableRowElement.idl
+++ b/Userland/Libraries/LibWeb/HTML/HTMLTableRowElement.idl
@@ -3,7 +3,7 @@
 #import <HTML/HTMLTableCellElement.idl>
 
 // https://html.spec.whatwg.org/multipage/tables.html#htmltablerowelement
-[Exposed=Window, UseDeprecatedAKString]
+[Exposed=Window]
 interface HTMLTableRowElement : HTMLElement {
 
     [HTMLConstructor] constructor();
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLTableSectionElement.idl b/Userland/Libraries/LibWeb/HTML/HTMLTableSectionElement.idl
index b1dcc6911e..d1ff615f05 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLTableSectionElement.idl
+++ b/Userland/Libraries/LibWeb/HTML/HTMLTableSectionElement.idl
@@ -3,7 +3,7 @@
 #import <HTML/HTMLTableRowElement.idl>
 
 // https://html.spec.whatwg.org/multipage/tables.html#htmltablesectionelement
-[Exposed=Window, UseDeprecatedAKString]
+[Exposed=Window]
 interface HTMLTableSectionElement : HTMLElement {
 
     [HTMLConstructor] constructor();
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLTextAreaElement.idl b/Userland/Libraries/LibWeb/HTML/HTMLTextAreaElement.idl
index 65e13d5844..2ade76aaca 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLTextAreaElement.idl
+++ b/Userland/Libraries/LibWeb/HTML/HTMLTextAreaElement.idl
@@ -1,7 +1,7 @@
 #import <HTML/HTMLElement.idl>
 
 // https://html.spec.whatwg.org/multipage/form-elements.html#htmltextareaelement
-[Exposed=Window, UseDeprecatedAKString]
+[Exposed=Window]
 interface HTMLTextAreaElement : HTMLElement {
 
     [HTMLConstructor] constructor();
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLTimeElement.idl b/Userland/Libraries/LibWeb/HTML/HTMLTimeElement.idl
index 25716bfe6a..76da859ad9 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLTimeElement.idl
+++ b/Userland/Libraries/LibWeb/HTML/HTMLTimeElement.idl
@@ -1,7 +1,7 @@
 #import <HTML/HTMLElement.idl>
 
 // https://html.spec.whatwg.org/multipage/text-level-semantics.html#htmltimeelement
-[Exposed=Window, UseDeprecatedAKString]
+[Exposed=Window]
 interface HTMLTimeElement : HTMLElement {
 
     [HTMLConstructor] constructor();
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLTrackElement.idl b/Userland/Libraries/LibWeb/HTML/HTMLTrackElement.idl
index 76b34bdaf4..f4ff0df664 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLTrackElement.idl
+++ b/Userland/Libraries/LibWeb/HTML/HTMLTrackElement.idl
@@ -1,7 +1,7 @@
 #import <HTML/HTMLElement.idl>
 
 // https://html.spec.whatwg.org/multipage/media.html#htmltrackelement
-[Exposed=Window, UseDeprecatedAKString]
+[Exposed=Window]
 interface HTMLTrackElement : HTMLElement {
 
     [HTMLConstructor] constructor();
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLUListElement.idl b/Userland/Libraries/LibWeb/HTML/HTMLUListElement.idl
index d3963751c5..207ffc08d7 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLUListElement.idl
+++ b/Userland/Libraries/LibWeb/HTML/HTMLUListElement.idl
@@ -1,7 +1,7 @@
 #import <HTML/HTMLElement.idl>
 
 // https://html.spec.whatwg.org/multipage/grouping-content.html#htmlulistelement
-[Exposed=Window, UseDeprecatedAKString]
+[Exposed=Window]
 interface HTMLUListElement : HTMLElement {
 
     [HTMLConstructor] constructor();
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLVideoElement.idl b/Userland/Libraries/LibWeb/HTML/HTMLVideoElement.idl
index 75303c1e6e..4e270ba3bf 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLVideoElement.idl
+++ b/Userland/Libraries/LibWeb/HTML/HTMLVideoElement.idl
@@ -1,7 +1,7 @@
 #import <HTML/HTMLMediaElement.idl>
 
 // https://html.spec.whatwg.org/multipage/media.html#htmlvideoelement
-[Exposed=Window, UseDeprecatedAKString]
+[Exposed=Window]
 interface HTMLVideoElement : HTMLMediaElement {
 
     [HTMLConstructor] constructor();
diff --git a/Userland/Libraries/LibWeb/Page/Page.cpp b/Userland/Libraries/LibWeb/Page/Page.cpp
index b3017d87e6..ab563208d1 100644
--- a/Userland/Libraries/LibWeb/Page/Page.cpp
+++ b/Userland/Libraries/LibWeb/Page/Page.cpp
@@ -337,7 +337,7 @@ WebIDL::ExceptionOr<void> Page::toggle_media_loop_state()
     if (media_element->has_attribute(HTML::AttributeNames::loop))
         media_element->remove_attribute(HTML::AttributeNames::loop);
     else
-        TRY(media_element->set_attribute(HTML::AttributeNames::loop, {}));
+        TRY(media_element->set_attribute(HTML::AttributeNames::loop, OptionalNone {}));
 
     return {};
 }
@@ -353,7 +353,7 @@ WebIDL::ExceptionOr<void> Page::toggle_media_controls_state()
     if (media_element->has_attribute(HTML::AttributeNames::controls))
         media_element->remove_attribute(HTML::AttributeNames::controls);
     else
-        TRY(media_element->set_attribute(HTML::AttributeNames::controls, {}));
+        TRY(media_element->set_attribute(HTML::AttributeNames::controls, OptionalNone {}));
 
     return {};
 }
diff --git a/Userland/Libraries/LibWeb/SVG/SVGStyleElement.idl b/Userland/Libraries/LibWeb/SVG/SVGStyleElement.idl
index 14d5d839fd..b1fcd5f7ba 100644
--- a/Userland/Libraries/LibWeb/SVG/SVGStyleElement.idl
+++ b/Userland/Libraries/LibWeb/SVG/SVGStyleElement.idl
@@ -1,7 +1,7 @@
 #import <CSS/LinkStyle.idl>
 #import <SVG/SVGElement.idl>
 
-[Exposed=Window, UseDeprecatedAKString]
+[Exposed=Window]
 interface SVGStyleElement : SVGElement {
   [Reflect] attribute DOMString type;
   [Reflect] attribute DOMString media;