diff --git a/demos/html5/MAKE.bat b/demos/html5/MAKE.bat
index d34226c..c447f43 100644
--- a/demos/html5/MAKE.bat
+++ b/demos/html5/MAKE.bat
@@ -49,7 +49,7 @@ if not exist "emsdk" (
 if "%EMSDK%"=="" call emsdk\emsdk_env.bat --system
 
 rem cook art
-..\..\tools\cook.exe --cook-jobs=1 --cook-ini=..\..\tools\cook_web.ini
+..\..\tools\cook.exe --cook-jobs=1 --cook-ini=..\..\tools\cook.ini
 
 rem host webserver, compile and launch
 rem start python -m http.server --bind 127.0.0.1 8000
diff --git a/demos/html5/demo_collide.c b/demos/html5/demo_collide.c
index 56b9368..b3c1bdd 100644
--- a/demos/html5/demo_collide.c
+++ b/demos/html5/demo_collide.c
@@ -14,7 +14,6 @@ void game_loop(void *userdata) {
     // key handler
     // if (input_down(KEY_F11) ) window_fullscreen( window_has_fullscreen()^1 );
     // if (input_down(KEY_ESC) ) window_loop_exit(); // @todo: break -> window_close()
-    window_resize();
 
     // animation
     static float dx = 0, dy = 0;
@@ -602,7 +601,7 @@ void game_loop(void *userdata) {
 
 int main(void) {
     // 75% sized, msaa x4 enabled
-    window_create(0.75f, WINDOW_MSAA4);
+    window_create(0.75f, WINDOW_MSAA4/*|WINDOW_FIXED*/);
     window_title( "V4K - SPACE pauses simulation" );
 
     // fx_load("fx**.fs");
diff --git a/demos/html5/template.html b/demos/html5/template.html
index 12bef2c..0a0fcbe 100644
--- a/demos/html5/template.html
+++ b/demos/html5/template.html
@@ -104,8 +104,10 @@
                 canvas.height = window.innerHeight;
 
                 window.addEventListener('resize', () => {
-                    canvas.width = window.innerWidth;
-                    canvas.height = window.innerHeight;
+                    if (canvas.canResize) {
+                        canvas.width = window.innerWidth;
+                        canvas.height = window.innerHeight;
+                    }
                 })
                 return canvas;
             })(),
diff --git a/engine/bind/v4k.lua b/engine/bind/v4k.lua
index 16028b1..02bc5fb 100644
--- a/engine/bind/v4k.lua
+++ b/engine/bind/v4k.lua
@@ -2869,7 +2869,6 @@ WINDOW_VSYNC_DISABLED =8192,
  int      window_swap();
  void     window_loop(void (*function)(void* loopArg), void* loopArg );
  void     window_loop_exit();
- void     window_resize();
  void     window_title(const char *title);
  void     window_icon(const char *file_icon);
  void     window_color(unsigned color);
diff --git a/engine/joint/v4k.h b/engine/joint/v4k.h
index 7f4a6fb..5966866 100644
--- a/engine/joint/v4k.h
+++ b/engine/joint/v4k.h
@@ -17326,7 +17326,6 @@ API int      window_swap(); // single function that combines above functions (de
 
 API void     window_loop(void (*function)(void* loopArg), void* loopArg ); // run main loop function continuously (emscripten only)
 API void     window_loop_exit(); // exit from main loop function (emscripten only)
-API void     window_resize(); // resize if canvas size has changed (emscripten only)
 
 API void     window_title(const char *title);
 API void     window_icon(const char *file_icon);
@@ -348962,6 +348961,7 @@ static int locked_aspect_ratio = 0;
 struct app {
     GLFWwindow *window;
     int width, height, keep_running;
+    unsigned flags;
 
     struct nk_context *ctx;
     struct nk_glfw *nk_glfw;
@@ -349055,6 +349055,8 @@ void window_hints(unsigned flags) {
     if(flags & WINDOW_MSAA2) glfwWindowHint(GLFW_SAMPLES, 2); // x2 AA
     if(flags & WINDOW_MSAA4) glfwWindowHint(GLFW_SAMPLES, 4); // x4 AA
     if(flags & WINDOW_MSAA8) glfwWindowHint(GLFW_SAMPLES, 8); // x8 AA
+
+    g->flags = flags;
 }
 
 struct nk_glfw *window_handle_nkglfw() {
@@ -349436,9 +349438,31 @@ int window_swap() {
 static
 void (*window_render_callback)(void* loopArg);
 
+static vec2 last_canvas_size;
+
+static
+void window_resize() {
+#if is(ems)
+    EM_ASM(canvas.canResize = 0);
+    if (g->flags&WINDOW_FIXED) return;
+    EM_ASM(canvas.canResize = 1);
+    vec2 size = window_canvas();
+    do_once last_canvas_size = size;
+    if (size.x != last_canvas_size.x || size.y != last_canvas_size.y) {
+        w = size.x;
+        h = size.y;
+        g->width  = w;
+        g->height = h;
+        glfwSetWindowSize(g->window, w, h);
+        // emscripten_set_canvas_size(w, h);
+    }
+#endif /* __EMSCRIPTEN__ */
+}
+
 static
 void window_loop_wrapper( void *loopArg ) {
     if( window_frame_begin() ) {
+        window_resize();
         window_render_callback(loopArg);
         window_frame_end();
         window_frame_swap();
@@ -349479,23 +349503,6 @@ vec2 window_canvas() {
 #endif /* __EMSCRIPTEN__ */
 }
 
-static vec2 last_canvas_size;
-
-void window_resize() {
-#if is(ems)
-    vec2 size = window_canvas();
-    do_once last_canvas_size = size;
-    if (size.x != last_canvas_size.x || size.y != last_canvas_size.y) {
-        w = size.x;
-        h = size.y;
-        g->width  = w;
-        g->height = h;
-        glfwSetWindowSize(g->window, w, h);
-        // emscripten_set_canvas_size(w, h);
-    }
-#endif /* __EMSCRIPTEN__ */
-}
-
 int window_width() {
     return w;
 }
diff --git a/engine/split/v4k_window.c b/engine/split/v4k_window.c
index 03d0b64..08ba120 100644
--- a/engine/split/v4k_window.c
+++ b/engine/split/v4k_window.c
@@ -114,6 +114,7 @@ static int locked_aspect_ratio = 0;
 struct app {
     GLFWwindow *window;
     int width, height, keep_running;
+    unsigned flags;
 
     struct nk_context *ctx;
     struct nk_glfw *nk_glfw;
@@ -207,6 +208,8 @@ void window_hints(unsigned flags) {
     if(flags & WINDOW_MSAA2) glfwWindowHint(GLFW_SAMPLES, 2); // x2 AA
     if(flags & WINDOW_MSAA4) glfwWindowHint(GLFW_SAMPLES, 4); // x4 AA
     if(flags & WINDOW_MSAA8) glfwWindowHint(GLFW_SAMPLES, 8); // x8 AA
+
+    g->flags = flags;
 }
 
 struct nk_glfw *window_handle_nkglfw() {
@@ -588,9 +591,31 @@ int window_swap() {
 static
 void (*window_render_callback)(void* loopArg);
 
+static vec2 last_canvas_size;
+
+static
+void window_resize() {
+#if is(ems)
+    EM_ASM(canvas.canResize = 0);
+    if (g->flags&WINDOW_FIXED) return;
+    EM_ASM(canvas.canResize = 1);
+    vec2 size = window_canvas();
+    do_once last_canvas_size = size;
+    if (size.x != last_canvas_size.x || size.y != last_canvas_size.y) {
+        w = size.x;
+        h = size.y;
+        g->width  = w;
+        g->height = h;
+        glfwSetWindowSize(g->window, w, h);
+        // emscripten_set_canvas_size(w, h);
+    }
+#endif /* __EMSCRIPTEN__ */
+}
+
 static
 void window_loop_wrapper( void *loopArg ) {
     if( window_frame_begin() ) {
+        window_resize();
         window_render_callback(loopArg);
         window_frame_end();
         window_frame_swap();
@@ -631,23 +656,6 @@ vec2 window_canvas() {
 #endif /* __EMSCRIPTEN__ */
 }
 
-static vec2 last_canvas_size;
-
-void window_resize() {
-#if is(ems)
-    vec2 size = window_canvas();
-    do_once last_canvas_size = size;
-    if (size.x != last_canvas_size.x || size.y != last_canvas_size.y) {
-        w = size.x;
-        h = size.y;
-        g->width  = w;
-        g->height = h;
-        glfwSetWindowSize(g->window, w, h);
-        // emscripten_set_canvas_size(w, h);
-    }
-#endif /* __EMSCRIPTEN__ */
-}
-
 int window_width() {
     return w;
 }
diff --git a/engine/split/v4k_window.h b/engine/split/v4k_window.h
index ab10e8b..39f74d3 100644
--- a/engine/split/v4k_window.h
+++ b/engine/split/v4k_window.h
@@ -33,7 +33,6 @@ API int      window_swap(); // single function that combines above functions (de
 
 API void     window_loop(void (*function)(void* loopArg), void* loopArg ); // run main loop function continuously (emscripten only)
 API void     window_loop_exit(); // exit from main loop function (emscripten only)
-API void     window_resize(); // resize if canvas size has changed (emscripten only)
 
 API void     window_title(const char *title);
 API void     window_icon(const char *file_icon);
diff --git a/engine/v4k.c b/engine/v4k.c
index 98ff3c9..8ffc898 100644
--- a/engine/v4k.c
+++ b/engine/v4k.c
@@ -19870,6 +19870,7 @@ static int locked_aspect_ratio = 0;
 struct app {
     GLFWwindow *window;
     int width, height, keep_running;
+    unsigned flags;
 
     struct nk_context *ctx;
     struct nk_glfw *nk_glfw;
@@ -19963,6 +19964,8 @@ void window_hints(unsigned flags) {
     if(flags & WINDOW_MSAA2) glfwWindowHint(GLFW_SAMPLES, 2); // x2 AA
     if(flags & WINDOW_MSAA4) glfwWindowHint(GLFW_SAMPLES, 4); // x4 AA
     if(flags & WINDOW_MSAA8) glfwWindowHint(GLFW_SAMPLES, 8); // x8 AA
+
+    g->flags = flags;
 }
 
 struct nk_glfw *window_handle_nkglfw() {
@@ -20344,9 +20347,31 @@ int window_swap() {
 static
 void (*window_render_callback)(void* loopArg);
 
+static vec2 last_canvas_size;
+
+static
+void window_resize() {
+#if is(ems)
+    EM_ASM(canvas.canResize = 0);
+    if (g->flags&WINDOW_FIXED) return;
+    EM_ASM(canvas.canResize = 1);
+    vec2 size = window_canvas();
+    do_once last_canvas_size = size;
+    if (size.x != last_canvas_size.x || size.y != last_canvas_size.y) {
+        w = size.x;
+        h = size.y;
+        g->width  = w;
+        g->height = h;
+        glfwSetWindowSize(g->window, w, h);
+        // emscripten_set_canvas_size(w, h);
+    }
+#endif /* __EMSCRIPTEN__ */
+}
+
 static
 void window_loop_wrapper( void *loopArg ) {
     if( window_frame_begin() ) {
+        window_resize();
         window_render_callback(loopArg);
         window_frame_end();
         window_frame_swap();
@@ -20387,23 +20412,6 @@ vec2 window_canvas() {
 #endif /* __EMSCRIPTEN__ */
 }
 
-static vec2 last_canvas_size;
-
-void window_resize() {
-#if is(ems)
-    vec2 size = window_canvas();
-    do_once last_canvas_size = size;
-    if (size.x != last_canvas_size.x || size.y != last_canvas_size.y) {
-        w = size.x;
-        h = size.y;
-        g->width  = w;
-        g->height = h;
-        glfwSetWindowSize(g->window, w, h);
-        // emscripten_set_canvas_size(w, h);
-    }
-#endif /* __EMSCRIPTEN__ */
-}
-
 int window_width() {
     return w;
 }
diff --git a/engine/v4k.h b/engine/v4k.h
index 2ddd4a8..681a4fc 100644
--- a/engine/v4k.h
+++ b/engine/v4k.h
@@ -3409,7 +3409,6 @@ API int      window_swap(); // single function that combines above functions (de
 
 API void     window_loop(void (*function)(void* loopArg), void* loopArg ); // run main loop function continuously (emscripten only)
 API void     window_loop_exit(); // exit from main loop function (emscripten only)
-API void     window_resize(); // resize if canvas size has changed (emscripten only)
 
 API void     window_title(const char *title);
 API void     window_icon(const char *file_icon);