diff --git a/backends/imgui_impl_emscripten.cpp b/backends/imgui_impl_emscripten.cpp
index 03a682472..59f9beb7e 100644
--- a/backends/imgui_impl_emscripten.cpp
+++ b/backends/imgui_impl_emscripten.cpp
@@ -4,6 +4,7 @@
 //
 // CHANGELOG
 // (minor and older changes stripped away, please see git history for details)
+//  2026-09-06: DPI: Added public ImGui_ImplEmscripten_UpdateDisplayProperties() wrapper.
 //  2026-09-06: Inputs: Exposed mouse button and key translation functions as public.
 //  2026-09-06: DPI: Added ImGui_ImplEmscripten_GetCssToImGuiScale() getter.
 //  2026-09-05: DPI: Use the canvas framebuffer dimensions for display sizing and exact per-axis mouse coordinate scaling.
@@ -406,6 +407,13 @@ ImVec2 ImGui_ImplEmscripten_GetCssToImGuiScale()
     return bd != nullptr ? bd->CssToImGuiScale : ImVec2(1.0f, 1.0f);
 }
 
+void ImGui_ImplEmscripten_UpdateDisplayProperties()
+{
+    ImGui_ImplEmscripten_Data* bd = ImGui_ImplEmscripten_GetBackendData();
+    IM_ASSERT(bd != nullptr && "Context or backend not initialized? Did you call ImGui_ImplEmscripten_Init()?");
+    if (bd != nullptr) ImGui_ImplEmscripten_UpdateDisplayProperties(ImGui::GetIO(), bd);
+}
+
 void ImGui_ImplEmscripten_Shutdown()
 {
     ImGui_ImplEmscripten_Data* bd = ImGui_ImplEmscripten_GetBackendData();
diff --git a/backends/imgui_impl_emscripten.h b/backends/imgui_impl_emscripten.h
index b7a8a707e..7589e2669 100644
--- a/backends/imgui_impl_emscripten.h
+++ b/backends/imgui_impl_emscripten.h
@@ -50,6 +50,9 @@ IMGUI_IMPL_API void ImGui_ImplEmscripten_SetTargetDevicePixelRatio(float target_
 // Return the scale used to convert browser CSS pixel coordinates to Dear ImGui coordinates. Valid after Init().
 IMGUI_IMPL_API ImVec2 ImGui_ImplEmscripten_GetCssToImGuiScale();
 
+// Refresh display size and scaling properties immediately. Call after changing the canvas framebuffer or CSS size.
+IMGUI_IMPL_API void ImGui_ImplEmscripten_UpdateDisplayProperties();
+
 // Input translation helpers.
 IMGUI_IMPL_API ImGuiMouseButton ImGui_ImplEmscripten_TranslateMouseButton(unsigned short emscripten_button);
 IMGUI_IMPL_API ImGuiKey         ImGui_ImplEmscripten_TranslateKey(const char* emscripten_key);