diff --git a/src/Magnum/Platform/GlfwApplication.cpp b/src/Magnum/Platform/GlfwApplication.cpp
index ef46be6c5..3b8539e87 100644
--- a/src/Magnum/Platform/GlfwApplication.cpp
+++ b/src/Magnum/Platform/GlfwApplication.cpp
@@ -150,6 +150,12 @@ GlfwApplication::~GlfwApplication() {
     glfwTerminate();
 }
 
+Vector2i GlfwApplication::windowSize() {
+    Vector2i size;
+    glfwGetWindowSize(_window, &size.x(), &size.y());
+    return size;
+}
+
 void GlfwApplication::setSwapInterval(const Int interval) {
     glfwSwapInterval(interval);
 }
diff --git a/src/Magnum/Platform/GlfwApplication.h b/src/Magnum/Platform/GlfwApplication.h
index fae1fbcde..1379663e2 100644
--- a/src/Magnum/Platform/GlfwApplication.h
+++ b/src/Magnum/Platform/GlfwApplication.h
@@ -167,6 +167,17 @@ class GlfwApplication {
 
         /** @{ @name Screen handling */
 
+        #ifndef CORRADE_TARGET_EMSCRIPTEN
+        /**
+         * @brief Window size
+         *
+         * Window size to which all input event coordinates can be related.
+         * Note that especially on HiDPI systems the reported window size might
+         * not be the same as framebuffer size.
+         */
+        Vector2i windowSize();
+        #endif
+
         /**
          * @brief Swap buffers
          *