diff --git a/backends/imgui_impl_emscripten.cpp b/backends/imgui_impl_emscripten.cpp
index 05b6de3d8..4aad0717b 100644
--- a/backends/imgui_impl_emscripten.cpp
+++ b/backends/imgui_impl_emscripten.cpp
@@ -451,16 +451,33 @@ void ImGui_ImplEmscripten_Init() {
       auto const key{translate_key(key_event->code)};
       auto &imgui_io{ImGui::GetIO()};
       imgui_io.AddKeyEvent(key, true);
-
-      switch(key) {                                                             // special cases for certain key events that need to be consumed to prevent unwanted behaviour
+      switch(key) {                                                             // special cases for certain key events
+      case ImGuiKey_LeftCtrl:                                                   // additional events for modifier keys
+      case ImGuiKey_RightCtrl:
+        imgui_io.AddKeyEvent(ImGuiMod_Ctrl, true);
+        break;
+      case ImGuiKey_LeftShift:
+      case ImGuiKey_RightShift:
+        imgui_io.AddKeyEvent(ImGuiMod_Shift, true);
+        break;
+      case ImGuiKey_LeftAlt:
+      case ImGuiKey_RightAlt:
+        imgui_io.AddKeyEvent(ImGuiMod_Alt, true);
+        break;
+      case ImGuiKey_LeftSuper:
+      case ImGuiKey_RightSuper:
+        imgui_io.AddKeyEvent(ImGuiMod_Super, true);
+        break;
+      // TODO: case ImGuiKey_Menu: do we want to do anything with this?
       case ImGuiKey_Tab:                                                        // consuming tab prevents the user tabbing to other parts of the browser interface outside the window content
         return imgui_io.WantCaptureKeyboard;                                    // the event was consumed only if imgui wants to capture the keyboard
       case ImGuiKey_Enter:                                                      // consuming enter prevents the word "Enter" appearing in text input via the keypress callback
       case ImGuiKey_Delete:                                                     // consuming enter prevents the word "Delete" appearing in text input via the keypress callback
         return imgui_io.WantTextInput;                                          // the event was consumed only if we're currently accepting text input
       default:
-        return false;                                                           // the event was not consumed
+        break;
       }
+      return false;                                                             // if no special handling, the event was not consumed
     }
   );
   emscripten_set_keyup_callback(
@@ -468,7 +485,29 @@ void ImGui_ImplEmscripten_Init() {
     nullptr,                                                                    // userData
     false,                                                                      // useCapture
     [](int /*event_type*/, EmscriptenKeyboardEvent const *key_event, void */*data*/){ // callback, event_type == EMSCRIPTEN_EVENT_KEYUP
-      ImGui::GetIO().AddKeyEvent(translate_key(key_event->code), false);
+      auto const key{translate_key(key_event->code)};
+      auto &imgui_io{ImGui::GetIO()};
+      imgui_io.AddKeyEvent(key, false);
+      switch(key) {                                                             // special cases for certain key events
+      case ImGuiKey_LeftCtrl:                                                   // additional events for modifier keys
+      case ImGuiKey_RightCtrl:
+        imgui_io.AddKeyEvent(ImGuiMod_Ctrl, false);
+        break;
+      case ImGuiKey_LeftShift:
+      case ImGuiKey_RightShift:
+        imgui_io.AddKeyEvent(ImGuiMod_Shift, false);
+        break;
+      case ImGuiKey_LeftAlt:
+      case ImGuiKey_RightAlt:
+        imgui_io.AddKeyEvent(ImGuiMod_Alt, false);
+        break;
+      case ImGuiKey_LeftSuper:
+      case ImGuiKey_RightSuper:
+        imgui_io.AddKeyEvent(ImGuiMod_Super, false);
+        break;
+      default:
+        break;
+      }
       return false;                                                             // the event was not consumed
     }
   );