diff --git a/Userland/Libraries/LibWeb/HTML/HTMLInputElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLInputElement.cpp
index abeece9e81..06a80791a2 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLInputElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLInputElement.cpp
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018-2022, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, Adam Hodgen <ant1441@gmail.com>
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -229,11 +230,18 @@ void HTMLInputElement::did_remove_attribute(FlyString const& name)
 
 String HTMLInputElement::type() const
 {
-    // FIXME: This should only reflect known values.
     auto value = attribute(HTML::AttributeNames::type);
-    if (value.is_null())
-        return "text";
-    return value;
+
+#define __ENUMERATE_HTML_INPUT_TYPE_ATTRIBUTE(keyword) \
+    if (value.equals_ignoring_case(#keyword))          \
+        return #keyword;
+    ENUMERATE_HTML_INPUT_TYPE_ATTRIBUTES
+#undef __ENUMERATE_HTML_INPUT_TYPE_ATTRIBUTE
+
+    // The missing value default and the invalid value default are the Text state.
+    // https://html.spec.whatwg.org/multipage/input.html#the-input-element:missing-value-default
+    // https://html.spec.whatwg.org/multipage/input.html#the-input-element:invalid-value-default
+    return "text";
 }
 
 void HTMLInputElement::set_type(String const& type)
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLInputElement.h b/Userland/Libraries/LibWeb/HTML/HTMLInputElement.h
index 2b1302affb..9b8b2be17c 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLInputElement.h
+++ b/Userland/Libraries/LibWeb/HTML/HTMLInputElement.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018-2022, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, Adam Hodgen <ant1441@gmail.com>
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -11,6 +12,31 @@
 
 namespace Web::HTML {
 
+// https://html.spec.whatwg.org/multipage/input.html#attr-input-type
+#define ENUMERATE_HTML_INPUT_TYPE_ATTRIBUTES                \
+    __ENUMERATE_HTML_INPUT_TYPE_ATTRIBUTE(hidden)           \
+    __ENUMERATE_HTML_INPUT_TYPE_ATTRIBUTE(text)             \
+    __ENUMERATE_HTML_INPUT_TYPE_ATTRIBUTE(search)           \
+    __ENUMERATE_HTML_INPUT_TYPE_ATTRIBUTE(tel)              \
+    __ENUMERATE_HTML_INPUT_TYPE_ATTRIBUTE(url)              \
+    __ENUMERATE_HTML_INPUT_TYPE_ATTRIBUTE(email)            \
+    __ENUMERATE_HTML_INPUT_TYPE_ATTRIBUTE(password)         \
+    __ENUMERATE_HTML_INPUT_TYPE_ATTRIBUTE(date)             \
+    __ENUMERATE_HTML_INPUT_TYPE_ATTRIBUTE(month)            \
+    __ENUMERATE_HTML_INPUT_TYPE_ATTRIBUTE(week)             \
+    __ENUMERATE_HTML_INPUT_TYPE_ATTRIBUTE(time)             \
+    __ENUMERATE_HTML_INPUT_TYPE_ATTRIBUTE("datetime-local") \
+    __ENUMERATE_HTML_INPUT_TYPE_ATTRIBUTE(number)           \
+    __ENUMERATE_HTML_INPUT_TYPE_ATTRIBUTE(range)            \
+    __ENUMERATE_HTML_INPUT_TYPE_ATTRIBUTE(color)            \
+    __ENUMERATE_HTML_INPUT_TYPE_ATTRIBUTE(checkbox)         \
+    __ENUMERATE_HTML_INPUT_TYPE_ATTRIBUTE(radio)            \
+    __ENUMERATE_HTML_INPUT_TYPE_ATTRIBUTE(file)             \
+    __ENUMERATE_HTML_INPUT_TYPE_ATTRIBUTE(submit)           \
+    __ENUMERATE_HTML_INPUT_TYPE_ATTRIBUTE(image)            \
+    __ENUMERATE_HTML_INPUT_TYPE_ATTRIBUTE(reset)            \
+    __ENUMERATE_HTML_INPUT_TYPE_ATTRIBUTE(button)
+
 class HTMLInputElement final : public FormAssociatedElement {
 public:
     using WrapperType = Bindings::HTMLInputElementWrapper;