diff --git a/content/utility/utility_main.cc b/content/utility/utility_main.cc
index 30fd82de7901d6..791ef502d64393 100644
--- a/content/utility/utility_main.cc
+++ b/content/utility/utility_main.cc
@@ -103,8 +103,15 @@ int UtilityMain(const MainFunctionParams& parameters) {
   base::SingleThreadTaskExecutor main_thread_task_executor(message_pump_type);
   base::PlatformThread::SetName("CrUtilityMain");
 
-  if (parameters.command_line.HasSwitch(switches::kUtilityStartupDialog))
-    WaitForDebugger("Utility");
+  if (parameters.command_line.HasSwitch(switches::kUtilityStartupDialog)) {
+    auto dialog_match = parameters.command_line.GetSwitchValueASCII(
+        switches::kUtilityStartupDialog);
+    auto sub_type =
+        parameters.command_line.GetSwitchValueASCII(switches::kUtilitySubType);
+    if (dialog_match.empty() || dialog_match == sub_type) {
+      WaitForDebugger(sub_type.empty() ? "Utility" : sub_type);
+    }
+  }
 
 #if defined(OS_LINUX) || defined(OS_CHROMEOS)
   // Initializes the sandbox before any threads are created.
diff --git a/docs/linux/debugging.md b/docs/linux/debugging.md
index 9ecefa546cd473..38e4d9603bea2a 100644
--- a/docs/linux/debugging.md
+++ b/docs/linux/debugging.md
@@ -83,6 +83,10 @@ to debug the renderer code. Go to
 https://www.chromium.org/blink/getting-started-with-blink-debugging for more
 information on how this can be done.
 
+For utilities you can use `--utility-startup-dialog` to have all utilities
+prompt, or `--utility-startup-dialog=data_decoder.mojom.DataDecoderService`
+to debug only a particular service type.
+
 #### Choosing which renderers to debug
 
 If you are starting multiple renderers then the above means that multiple gdb's
diff --git a/docs/mac/debugging.md b/docs/mac/debugging.md
index 8cd36e961c05ee..420faef475523a 100644
--- a/docs/mac/debugging.md
+++ b/docs/mac/debugging.md
@@ -173,7 +173,7 @@ these startup-dialog switches for the relevant process type:
 
 * `--renderer-startup-dialog`
 * `--utility-startup-dialog`
-* `--renderer-startup-dialog`
+* `--utility-startup-dialog=data_decoder.mojom.DataDecoderService`
 
 After the process launches, it will print a message like this to standard error: