diff --git a/Userland/Libraries/LibWeb/HTML/AttributeNames.cpp b/Userland/Libraries/LibWeb/HTML/AttributeNames.cpp
index a9e7b64c690..2e73cb25113 100644
--- a/Userland/Libraries/LibWeb/HTML/AttributeNames.cpp
+++ b/Userland/Libraries/LibWeb/HTML/AttributeNames.cpp
@@ -41,33 +41,48 @@ void initialize_strings()
 // https://html.spec.whatwg.org/#boolean-attribute
 bool is_boolean_attribute(FlyString const& attribute)
 {
-    // NOTE: This is the list of attributes from https://html.spec.whatwg.org/#attributes-3
-    //       with a Value column value of "Boolean attribute".
-    return attribute.is_one_of(
-        AttributeNames::allowfullscreen,
-        AttributeNames::async,
-        AttributeNames::autofocus,
-        AttributeNames::autoplay,
-        AttributeNames::checked,
-        AttributeNames::controls,
-        AttributeNames::default_,
-        AttributeNames::defer,
-        AttributeNames::disabled,
-        AttributeNames::formnovalidate,
-        AttributeNames::inert,
-        AttributeNames::ismap,
-        AttributeNames::itemscope,
-        AttributeNames::loop,
-        AttributeNames::multiple,
-        AttributeNames::muted,
-        AttributeNames::nomodule,
-        AttributeNames::novalidate,
-        AttributeNames::open,
-        AttributeNames::playsinline,
-        AttributeNames::readonly,
-        AttributeNames::required,
-        AttributeNames::reversed,
-        AttributeNames::selected);
+    // NOTE: For web compatibility, this matches the list of attributes which Chromium considers to be booleans,
+    //       excluding attributes that are only used by Chromium itself:
+    //       https://source.chromium.org/chromium/chromium/src/+/460b7c003cf89fc9493e721701906f19e5f6a387:chrome/test/chromedriver/element_commands.cc;l=48-94
+    return attribute.equals_ignoring_ascii_case(AttributeNames::allowfullscreen)
+        || attribute.equals_ignoring_ascii_case(AttributeNames::async)
+        || attribute.equals_ignoring_ascii_case(AttributeNames::autofocus)
+        || attribute.equals_ignoring_ascii_case(AttributeNames::autoplay)
+        || attribute.equals_ignoring_ascii_case(AttributeNames::checked)
+        || attribute.equals_ignoring_ascii_case(AttributeNames::compact)
+        || attribute.equals_ignoring_ascii_case(AttributeNames::controls)
+        || attribute.equals_ignoring_ascii_case(AttributeNames::declare)
+        || attribute.equals_ignoring_ascii_case(AttributeNames::default_)
+        || attribute.equals_ignoring_ascii_case(AttributeNames::defaultchecked)
+        || attribute.equals_ignoring_ascii_case(AttributeNames::defaultselected)
+        || attribute.equals_ignoring_ascii_case(AttributeNames::defer)
+        || attribute.equals_ignoring_ascii_case(AttributeNames::disabled)
+        || attribute.equals_ignoring_ascii_case(AttributeNames::ended)
+        || attribute.equals_ignoring_ascii_case(AttributeNames::formnovalidate)
+        || attribute.equals_ignoring_ascii_case(AttributeNames::hidden)
+        || attribute.equals_ignoring_ascii_case(AttributeNames::indeterminate)
+        || attribute.equals_ignoring_ascii_case(AttributeNames::iscontenteditable)
+        || attribute.equals_ignoring_ascii_case(AttributeNames::ismap)
+        || attribute.equals_ignoring_ascii_case(AttributeNames::itemscope)
+        || attribute.equals_ignoring_ascii_case(AttributeNames::loop)
+        || attribute.equals_ignoring_ascii_case(AttributeNames::multiple)
+        || attribute.equals_ignoring_ascii_case(AttributeNames::muted)
+        || attribute.equals_ignoring_ascii_case(AttributeNames::nohref)
+        || attribute.equals_ignoring_ascii_case(AttributeNames::nomodule)
+        || attribute.equals_ignoring_ascii_case(AttributeNames::noresize)
+        || attribute.equals_ignoring_ascii_case(AttributeNames::noshade)
+        || attribute.equals_ignoring_ascii_case(AttributeNames::novalidate)
+        || attribute.equals_ignoring_ascii_case(AttributeNames::nowrap)
+        || attribute.equals_ignoring_ascii_case(AttributeNames::open)
+        || attribute.equals_ignoring_ascii_case(AttributeNames::paused)
+        || attribute.equals_ignoring_ascii_case(AttributeNames::playsinline)
+        || attribute.equals_ignoring_ascii_case(AttributeNames::readonly)
+        || attribute.equals_ignoring_ascii_case(AttributeNames::required)
+        || attribute.equals_ignoring_ascii_case(AttributeNames::reversed)
+        || attribute.equals_ignoring_ascii_case(AttributeNames::seeking)
+        || attribute.equals_ignoring_ascii_case(AttributeNames::selected)
+        || attribute.equals_ignoring_ascii_case(AttributeNames::truespeed)
+        || attribute.equals_ignoring_ascii_case(AttributeNames::willvalidate);
 }
 
 }
diff --git a/Userland/Libraries/LibWeb/HTML/AttributeNames.h b/Userland/Libraries/LibWeb/HTML/AttributeNames.h
index 0f2544f633c..6dc4c95cbca 100644
--- a/Userland/Libraries/LibWeb/HTML/AttributeNames.h
+++ b/Userland/Libraries/LibWeb/HTML/AttributeNames.h
@@ -60,6 +60,8 @@ namespace AttributeNames {
     __ENUMERATE_HTML_ATTRIBUTE(datetime)                   \
     __ENUMERATE_HTML_ATTRIBUTE(declare)                    \
     __ENUMERATE_HTML_ATTRIBUTE(default_)                   \
+    __ENUMERATE_HTML_ATTRIBUTE(defaultchecked)             \
+    __ENUMERATE_HTML_ATTRIBUTE(defaultselected)            \
     __ENUMERATE_HTML_ATTRIBUTE(defer)                      \
     __ENUMERATE_HTML_ATTRIBUTE(dir)                        \
     __ENUMERATE_HTML_ATTRIBUTE(direction)                  \
@@ -67,6 +69,7 @@ namespace AttributeNames {
     __ENUMERATE_HTML_ATTRIBUTE(disabled)                   \
     __ENUMERATE_HTML_ATTRIBUTE(download)                   \
     __ENUMERATE_HTML_ATTRIBUTE(enctype)                    \
+    __ENUMERATE_HTML_ATTRIBUTE(ended)                      \
     __ENUMERATE_HTML_ATTRIBUTE(event)                      \
     __ENUMERATE_HTML_ATTRIBUTE(face)                       \
     __ENUMERATE_HTML_ATTRIBUTE(fetchpriority)              \
@@ -90,9 +93,11 @@ namespace AttributeNames {
     __ENUMERATE_HTML_ATTRIBUTE(id)                         \
     __ENUMERATE_HTML_ATTRIBUTE(imagesizes)                 \
     __ENUMERATE_HTML_ATTRIBUTE(imagesrcset)                \
+    __ENUMERATE_HTML_ATTRIBUTE(indeterminate)              \
     __ENUMERATE_HTML_ATTRIBUTE(inert)                      \
     __ENUMERATE_HTML_ATTRIBUTE(integrity)                  \
     __ENUMERATE_HTML_ATTRIBUTE(is)                         \
+    __ENUMERATE_HTML_ATTRIBUTE(iscontenteditable)          \
     __ENUMERATE_HTML_ATTRIBUTE(ismap)                      \
     __ENUMERATE_HTML_ATTRIBUTE(itemscope)                  \
     __ENUMERATE_HTML_ATTRIBUTE(kind)                       \
@@ -212,6 +217,7 @@ namespace AttributeNames {
     __ENUMERATE_HTML_ATTRIBUTE(open)                       \
     __ENUMERATE_HTML_ATTRIBUTE(optimum)                    \
     __ENUMERATE_HTML_ATTRIBUTE(pattern)                    \
+    __ENUMERATE_HTML_ATTRIBUTE(paused)                     \
     __ENUMERATE_HTML_ATTRIBUTE(ping)                       \
     __ENUMERATE_HTML_ATTRIBUTE(placeholder)                \
     __ENUMERATE_HTML_ATTRIBUTE(playsinline)                \
@@ -232,6 +238,7 @@ namespace AttributeNames {
     __ENUMERATE_HTML_ATTRIBUTE(scrollamount)               \
     __ENUMERATE_HTML_ATTRIBUTE(scrolldelay)                \
     __ENUMERATE_HTML_ATTRIBUTE(scrolling)                  \
+    __ENUMERATE_HTML_ATTRIBUTE(seeking)                    \
     __ENUMERATE_HTML_ATTRIBUTE(selected)                   \
     __ENUMERATE_HTML_ATTRIBUTE(shadowrootclonable)         \
     __ENUMERATE_HTML_ATTRIBUTE(shadowrootdelegatesfocus)   \
@@ -265,6 +272,7 @@ namespace AttributeNames {
     __ENUMERATE_HTML_ATTRIBUTE(vlink)                      \
     __ENUMERATE_HTML_ATTRIBUTE(vspace)                     \
     __ENUMERATE_HTML_ATTRIBUTE(width)                      \
+    __ENUMERATE_HTML_ATTRIBUTE(willvalidate)               \
     __ENUMERATE_HTML_ATTRIBUTE(wrap)
 
 #define __ENUMERATE_HTML_ATTRIBUTE(name) extern FlyString name;
diff --git a/Userland/Services/WebContent/WebDriverConnection.cpp b/Userland/Services/WebContent/WebDriverConnection.cpp
index ecd32df6c1e..f230f00ae81 100644
--- a/Userland/Services/WebContent/WebDriverConnection.cpp
+++ b/Userland/Services/WebContent/WebDriverConnection.cpp
@@ -1302,36 +1302,33 @@ Messages::WebDriverClient::IsElementSelectedResponse WebDriverConnection::is_ele
 // 12.4.2 Get Element Attribute, https://w3c.github.io/webdriver/#dfn-get-element-attribute
 Messages::WebDriverClient::GetElementAttributeResponse WebDriverConnection::get_element_attribute(String const& element_id, String const& name)
 {
-    // 1. If the current browsing context is no longer open, return error with error code no such window.
+    // 1. If session's current browsing context is no longer open, return error with error code no such window.
     TRY(ensure_current_browsing_context_is_open());
 
-    // 2. Handle any user prompts and return its value if it is an error.
+    // 2. Try to handle any user prompts with session.
     handle_any_user_prompts([this, element_id, name]() {
-        // 3. Let element be the result of trying to get a known connected element with url variable element id.
+        // 3. Let element be the result of trying to get a known element with session and URL variables' element id.
         auto element = WEBDRIVER_TRY(Web::WebDriver::get_known_element(current_browsing_context(), element_id));
 
-        // 4. Let result be the result of the first matching condition:
-        Optional<ByteString> result;
+        // 4. Let name be URL variables["name"].
+        // 5. Let result be the result of the first matching condition:
+        String result {};
 
         // -> If name is a boolean attribute
         if (Web::HTML::is_boolean_attribute(name)) {
-            // "true" (string) if the element has the attribute, otherwise null.
+            // "true" (string) if the element hasAttribute() with name, otherwise null.
             if (element->has_attribute(name))
-                result = "true"sv;
+                result = "true"_string;
         }
         // -> Otherwise
         else {
             // The result of getting an attribute by name name.
             if (auto attr = element->get_attribute(name); attr.has_value())
-                result = attr->to_byte_string();
+                result = attr.release_value();
         }
 
         // 5. Return success with data result.
-        if (result.has_value()) {
-            async_driver_execution_complete({ result.release_value() });
-            return;
-        }
-        async_driver_execution_complete(JsonValue {});
+        async_driver_execution_complete({ result.to_byte_string() });
     });
 
     return JsonValue {};