diff --git a/Userland/Libraries/LibWeb/Cookie/ParsedCookie.cpp b/Userland/Libraries/LibWeb/Cookie/ParsedCookie.cpp
index 594763afd2..725967073c 100644
--- a/Userland/Libraries/LibWeb/Cookie/ParsedCookie.cpp
+++ b/Userland/Libraries/LibWeb/Cookie/ParsedCookie.cpp
@@ -12,6 +12,7 @@
 #include <AK/Vector.h>
 #include <LibIPC/Decoder.h>
 #include <LibIPC/Encoder.h>
+#include <LibWeb/Infra/Strings.h>
 #include <ctype.h>
 
 namespace Web::Cookie {
@@ -75,7 +76,7 @@ Optional<ParsedCookie> parse_cookie(StringView cookie_string)
         return {};
 
     // 6. The cookie-name is the name string, and the cookie-value is the value string.
-    ParsedCookie parsed_cookie { name, value };
+    ParsedCookie parsed_cookie { MUST(String::from_utf8(name)), MUST(String::from_utf8(value)) };
 
     parse_attributes(parsed_cookie, unparsed_attributes);
     return parsed_cookie;
@@ -197,7 +198,7 @@ void on_domain_attribute(ParsedCookie& parsed_cookie, StringView attribute_value
     }
 
     // Convert the cookie-domain to lower case.
-    parsed_cookie.domain = DeprecatedString(cookie_domain).to_lowercase();
+    parsed_cookie.domain = MUST(Infra::to_ascii_lowercase(cookie_domain));
 }
 
 void on_path_attribute(ParsedCookie& parsed_cookie, StringView attribute_value)
@@ -210,7 +211,7 @@ void on_path_attribute(ParsedCookie& parsed_cookie, StringView attribute_value)
         return;
 
     // Let cookie-path be the attribute-value
-    parsed_cookie.path = attribute_value;
+    parsed_cookie.path = MUST(String::from_utf8(attribute_value));
 }
 
 void on_secure_attribute(ParsedCookie& parsed_cookie)
@@ -373,12 +374,12 @@ ErrorOr<void> IPC::encode(Encoder& encoder, Web::Cookie::ParsedCookie const& coo
 template<>
 ErrorOr<Web::Cookie::ParsedCookie> IPC::decode(Decoder& decoder)
 {
-    auto name = TRY(decoder.decode<DeprecatedString>());
-    auto value = TRY(decoder.decode<DeprecatedString>());
+    auto name = TRY(decoder.decode<String>());
+    auto value = TRY(decoder.decode<String>());
     auto expiry_time_from_expires_attribute = TRY(decoder.decode<Optional<UnixDateTime>>());
     auto expiry_time_from_max_age_attribute = TRY(decoder.decode<Optional<UnixDateTime>>());
-    auto domain = TRY(decoder.decode<Optional<DeprecatedString>>());
-    auto path = TRY(decoder.decode<Optional<DeprecatedString>>());
+    auto domain = TRY(decoder.decode<Optional<String>>());
+    auto path = TRY(decoder.decode<Optional<String>>());
     auto secure_attribute_present = TRY(decoder.decode<bool>());
     auto http_only_attribute_present = TRY(decoder.decode<bool>());
     auto same_site_attribute = TRY(decoder.decode<Web::Cookie::SameSite>());
diff --git a/Userland/Libraries/LibWeb/Cookie/ParsedCookie.h b/Userland/Libraries/LibWeb/Cookie/ParsedCookie.h
index 5ffb185fba..3108896468 100644
--- a/Userland/Libraries/LibWeb/Cookie/ParsedCookie.h
+++ b/Userland/Libraries/LibWeb/Cookie/ParsedCookie.h
@@ -6,8 +6,8 @@
 
 #pragma once
 
-#include <AK/DeprecatedString.h>
 #include <AK/Optional.h>
+#include <AK/String.h>
 #include <AK/Time.h>
 #include <LibIPC/Forward.h>
 #include <LibWeb/Cookie/Cookie.h>
@@ -15,13 +15,13 @@
 namespace Web::Cookie {
 
 struct ParsedCookie {
-    DeprecatedString name;
-    DeprecatedString value;
+    String name;
+    String value;
     SameSite same_site_attribute { SameSite::Default };
     Optional<UnixDateTime> expiry_time_from_expires_attribute {};
     Optional<UnixDateTime> expiry_time_from_max_age_attribute {};
-    Optional<DeprecatedString> domain {};
-    Optional<DeprecatedString> path {};
+    Optional<String> domain {};
+    Optional<String> path {};
     bool secure_attribute_present { false };
     bool http_only_attribute_present { false };
 };
diff --git a/Userland/Libraries/LibWebView/CookieJar.cpp b/Userland/Libraries/LibWebView/CookieJar.cpp
index a9a48d004e..55f7a2c851 100644
--- a/Userland/Libraries/LibWebView/CookieJar.cpp
+++ b/Userland/Libraries/LibWebView/CookieJar.cpp
@@ -290,7 +290,7 @@ void CookieJar::store_cookie(Web::Cookie::ParsedCookie const& parsed_cookie, con
     // https://tools.ietf.org/html/rfc6265#section-5.3
 
     // 2. Create a new cookie with name cookie-name, value cookie-value. Set the creation-time and the last-access-time to the current date and time.
-    Web::Cookie::Cookie cookie { MUST(String::from_deprecated_string(parsed_cookie.name)), MUST(String::from_deprecated_string(parsed_cookie.value)), parsed_cookie.same_site_attribute };
+    Web::Cookie::Cookie cookie { parsed_cookie.name, parsed_cookie.value, parsed_cookie.same_site_attribute };
     cookie.creation_time = UnixDateTime::now();
     cookie.last_access_time = cookie.creation_time;
 
@@ -313,7 +313,7 @@ void CookieJar::store_cookie(Web::Cookie::ParsedCookie const& parsed_cookie, con
     // 4. If the cookie-attribute-list contains an attribute with an attribute-name of "Domain":
     if (parsed_cookie.domain.has_value()) {
         // Let the domain-attribute be the attribute-value of the last attribute in the cookie-attribute-list with an attribute-name of "Domain".
-        cookie.domain = MUST(String::from_deprecated_string(parsed_cookie.domain.value()));
+        cookie.domain = parsed_cookie.domain.value();
     }
 
     // 5. If the user agent is configured to reject "public suffixes" and the domain-attribute is a public suffix:
@@ -347,7 +347,7 @@ void CookieJar::store_cookie(Web::Cookie::ParsedCookie const& parsed_cookie, con
     // 7. If the cookie-attribute-list contains an attribute with an attribute-name of "Path":
     if (parsed_cookie.path.has_value()) {
         // Set the cookie's path to attribute-value of the last attribute in the cookie-attribute-list with an attribute-name of "Path".
-        cookie.path = MUST(String::from_deprecated_string(parsed_cookie.path.value()));
+        cookie.path = parsed_cookie.path.value();
     } else {
         cookie.path = MUST(String::from_deprecated_string(default_path(url)));
     }
diff --git a/Userland/Services/WebContent/WebDriverConnection.cpp b/Userland/Services/WebContent/WebDriverConnection.cpp
index 19c27b0f5e..031798acb9 100644
--- a/Userland/Services/WebContent/WebDriverConnection.cpp
+++ b/Userland/Services/WebContent/WebDriverConnection.cpp
@@ -1570,21 +1570,21 @@ Messages::WebDriverClient::AddCookieResponse WebDriverConnection::add_cookie(Jso
 
     // 7. Create a cookie in the cookie store associated with the active document’s address using cookie name name, cookie value value, and an attribute-value list of the following cookie concepts listed in the table for cookie conversion from data:
     Web::Cookie::ParsedCookie cookie {};
-    cookie.name = TRY(get_property(data, "name"sv));
-    cookie.value = TRY(get_property(data, "value"sv));
+    cookie.name = MUST(String::from_deprecated_string(TRY(get_property(data, "name"sv))));
+    cookie.value = MUST(String::from_deprecated_string(TRY(get_property(data, "value"sv))));
 
     // Cookie path
     //     The value if the entry exists, otherwise "/".
     if (data.has("path"sv))
-        cookie.path = TRY(get_property(data, "path"sv));
+        cookie.path = MUST(String::from_deprecated_string(TRY(get_property(data, "path"sv))));
     else
-        cookie.path = "/";
+        cookie.path = "/"_string;
 
     // Cookie domain
     //     The value if the entry exists, otherwise the current browsing context’s active document’s URL domain.
     // NOTE: The otherwise case is handled by the CookieJar
     if (data.has("domain"sv))
-        cookie.domain = TRY(get_property(data, "domain"sv));
+        cookie.domain = MUST(String::from_deprecated_string(TRY(get_property(data, "domain"sv))));
 
     // Cookie secure only
     //     The value if the entry exists, otherwise false.