diff --git a/Ladybird/HelperProcess.cpp b/Ladybird/HelperProcess.cpp
index a677e7aee73..b00d95d10be 100644
--- a/Ladybird/HelperProcess.cpp
+++ b/Ladybird/HelperProcess.cpp
@@ -59,6 +59,8 @@ ErrorOr<NonnullRefPtr<WebView::WebContentClient>> launch_web_content_process(
                 arguments.append("--log-all-js-exceptions"sv);
             if (web_content_options.enable_idl_tracing == Ladybird::EnableIDLTracing::Yes)
                 arguments.append("--enable-idl-tracing"sv);
+            if (web_content_options.expose_internals_object == Ladybird::ExposeInternalsObject::Yes)
+                arguments.append("--expose-internals-object"sv);
             if (auto server = mach_server_name(); server.has_value()) {
                 arguments.append("--mach-server-name"sv);
                 arguments.append(server.value());
diff --git a/Ladybird/Qt/main.cpp b/Ladybird/Qt/main.cpp
index 4a34eed8db4..578a34ffcbe 100644
--- a/Ladybird/Qt/main.cpp
+++ b/Ladybird/Qt/main.cpp
@@ -82,6 +82,7 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
     bool enable_callgrind_profiling = false;
     bool disable_sql_database = false;
     bool enable_qt_networking = false;
+    bool expose_internals_object = false;
     bool use_gpu_painting = false;
     bool debug_web_content = false;
     bool log_all_js_exceptions = false;
@@ -99,6 +100,7 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
     args_parser.add_option(certificates, "Path to a certificate file", "certificate", 'C', "certificate");
     args_parser.add_option(log_all_js_exceptions, "Log all JavaScript exceptions", "log-all-js-exceptions");
     args_parser.add_option(enable_idl_tracing, "Enable IDL tracing", "enable-idl-tracing");
+    args_parser.add_option(expose_internals_object, "Expose internals object", "expose-internals-object");
     args_parser.parse(arguments);
 
     WebView::ProcessManager::initialize();
@@ -149,6 +151,7 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
         .wait_for_debugger = debug_web_content ? Ladybird::WaitForDebugger::Yes : Ladybird::WaitForDebugger::No,
         .log_all_js_exceptions = log_all_js_exceptions ? Ladybird::LogAllJSExceptions::Yes : Ladybird::LogAllJSExceptions::No,
         .enable_idl_tracing = enable_idl_tracing ? Ladybird::EnableIDLTracing::Yes : Ladybird::EnableIDLTracing::No,
+        .expose_internals_object = expose_internals_object ? Ladybird::ExposeInternalsObject::Yes : Ladybird::ExposeInternalsObject::No,
     };
 
     Ladybird::BrowserWindow window(initial_urls, cookie_jar, web_content_options, webdriver_content_ipc_path);
diff --git a/Ladybird/Types.h b/Ladybird/Types.h
index 476c7351971..db42ea73c58 100644
--- a/Ladybird/Types.h
+++ b/Ladybird/Types.h
@@ -45,6 +45,11 @@ enum class EnableIDLTracing {
     Yes
 };
 
+enum class ExposeInternalsObject {
+    No,
+    Yes
+};
+
 struct WebContentOptions {
     String command_line;
     String executable_path;
@@ -55,6 +60,7 @@ struct WebContentOptions {
     WaitForDebugger wait_for_debugger { WaitForDebugger::No };
     LogAllJSExceptions log_all_js_exceptions { LogAllJSExceptions::No };
     EnableIDLTracing enable_idl_tracing { EnableIDLTracing::No };
+    ExposeInternalsObject expose_internals_object { ExposeInternalsObject::No };
 };
 
 }
diff --git a/Ladybird/WebContent/main.cpp b/Ladybird/WebContent/main.cpp
index c3c417faf9b..417e36777f5 100644
--- a/Ladybird/WebContent/main.cpp
+++ b/Ladybird/WebContent/main.cpp
@@ -94,6 +94,7 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
     Vector<ByteString> certificates;
     int request_server_socket { -1 };
     bool is_layout_test_mode = false;
+    bool expose_internals_object = false;
     bool use_lagom_networking = false;
     bool use_gpu_painting = false;
     bool wait_for_debugger = false;
@@ -105,6 +106,7 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
     args_parser.add_option(executable_path, "Chrome process executable path", "executable-path", 0, "executable_path");
     args_parser.add_option(request_server_socket, "File descriptor of the socket for the RequestServer connection", "request-server-socket", 'r', "request_server_socket");
     args_parser.add_option(is_layout_test_mode, "Is layout test mode", "layout-test-mode");
+    args_parser.add_option(expose_internals_object, "Expose internals object", "expose-internals-object");
     args_parser.add_option(use_lagom_networking, "Enable Lagom servers for networking", "use-lagom-networking");
     args_parser.add_option(use_gpu_painting, "Enable GPU painting", "use-gpu-painting");
     args_parser.add_option(wait_for_debugger, "Wait for debugger", "wait-for-debugger");
@@ -118,6 +120,10 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
         Core::Process::wait_for_debugger_and_break();
     }
 
+    // Layout test mode implies internals object is exposed
+    if (is_layout_test_mode)
+        expose_internals_object = true;
+
     Web::set_chrome_process_command_line(command_line);
     Web::set_chrome_process_executable_path(executable_path);
     if (use_gpu_painting) {
@@ -137,7 +143,7 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
 #endif
         TRY(initialize_lagom_networking(request_server_socket));
 
-    Web::HTML::Window::set_internals_object_exposed(is_layout_test_mode);
+    Web::HTML::Window::set_internals_object_exposed(expose_internals_object);
 
     Web::Platform::FontPlugin::install(*new Ladybird::FontPlugin(is_layout_test_mode));