diff --git a/.gitignore b/.gitignore
index 158090a0c..a55e1cf2b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,7 +1,7 @@
 **/target
 **/*.rs.bk
 **/Cargo.lock
-*profile.json
+profile*.json
 **/*.expanded.rs
 dump.*
 dump*.*
diff --git a/examples/gradient.rs b/examples/gradient.rs
index 9f6d83d2f..ff40c24fc 100644
--- a/examples/gradient.rs
+++ b/examples/gradient.rs
@@ -1,7 +1,6 @@
 #![cfg_attr(not(debug_assertions), windows_subsystem = "windows")]
 use zero_ui::prelude::*;
 
-use zero_ui::properties::events::widget::on_deinit;
 use zero_ui_view_prebuilt as zero_ui_view;
 
 fn main() {
@@ -30,12 +29,11 @@ fn app_main() {
                     ];
                 };
             };
-            #[cfg(feature = "app_profiler")]
-            on_deinit = hn!(|_, _| {
-                zero_ui::core::profiler::write_profile("resize-profile.json", false);
-            });
         }
-    })
+    });
+
+    #[cfg(feature = "app_profiler")]
+    zero_ui::core::profiler::write_profile("profile-gradient.json", false);
 }
 
 fn title(title: &'static str) -> impl Widget {
diff --git a/zero-ui-core/src/app.rs b/zero-ui-core/src/app.rs
index 1edbb0332..a50dbb81d 100644
--- a/zero-ui-core/src/app.rs
+++ b/zero-ui-core/src/app.rs
@@ -801,7 +801,7 @@ impl<E: AppExtension> RunningApp<E> {
         }
 
         {
-            profile_scope!("extensions::init");
+            profile_scope!("extensions.init");
             extensions.init(&mut ctx);
         }
 
@@ -1347,6 +1347,8 @@ impl<E: AppExtension> RunningApp<E> {
                         profile_scope!("events");
 
                         for event in u.events {
+                            profile_scope!("{:?}", event);
+
                             self.extensions.event_preview(&mut ctx, &event);
                             observer.event_preview(&mut ctx, &event);
                             Events::on_pre_events(&mut ctx, &event);
@@ -1404,6 +1406,7 @@ impl<E: AppExtension> RunningApp<E> {
 }
 impl<E: AppExtension> Drop for RunningApp<E> {
     fn drop(&mut self) {
+        profile_scope!("extensions.deinit");
         let mut ctx = self.owned_ctx.borrow();
         self.extensions.deinit(&mut ctx);
     }
@@ -2080,7 +2083,7 @@ pub mod view_process {
 
         /// Open a window and associate it with the `window_id`.
         pub fn open_window(&self, config: WindowRequest) -> Result<(ViewWindow, WindowOpenData)> {
-            profile_scope!("ViewProcess::open_window");
+            profile_scope!("ViewProcess.open_window");
 
             let mut app = self.0.borrow_mut();
             let _ = app.check_generation();
@@ -2104,7 +2107,7 @@ pub mod view_process {
         /// Note that no actual window is created, only the renderer, the use of window-ids to identify
         /// this renderer is only for convenience.
         pub fn open_headless(&self, config: HeadlessRequest) -> Result<ViewHeadless> {
-            profile_scope!("ViewProcess::open_headless");
+            profile_scope!("ViewProcess.open_headless");
 
             let mut app = self.0.borrow_mut();
 
diff --git a/zero-ui-core/src/debug.rs b/zero-ui-core/src/debug.rs
index 9b82fde51..3003e81b8 100644
--- a/zero-ui-core/src/debug.rs
+++ b/zero-ui-core/src/debug.rs
@@ -673,7 +673,7 @@ impl UiNode for PropertyInfoNode {
     }
 
     fn render(&self, ctx: &mut RenderContext, frame: &mut FrameBuilder) {
-        profile_scope!("{}::render", self.info.borrow().property_name);
+        profile_scope!("{}.render", self.info.borrow().property_name);
 
         let t = Instant::now();
         self.child.render(ctx, frame);
diff --git a/zero-ui-core/src/window.rs b/zero-ui-core/src/window.rs
index 19e2ba67a..c2035479d 100644
--- a/zero-ui-core/src/window.rs
+++ b/zero-ui-core/src/window.rs
@@ -1901,12 +1901,12 @@ impl AppWindow {
 
     fn on_update(&mut self, ctx: &mut AppContext) {
         if self.first_update {
-            profile_scope!("window({})::on_update::init", self.id.sequential());
+            profile_scope!("window({}).on_update-init", self.id.sequential());
 
             self.context.init(ctx);
             self.first_update = false;
         } else {
-            profile_scope!("window({})::on_update", self.id.sequential());
+            profile_scope!("window({}).on_update", self.id.sequential());
 
             self.context.update(ctx);
 
@@ -2141,7 +2141,7 @@ impl AppWindow {
             return;
         }
 
-        profile_scope!("window({})::on_layout", self.id.sequential());
+        profile_scope!("window({}).on_layout", self.id.sequential());
 
         // layout using the "system" size, it can still be overwritten by auto_size.
         let (size, _, _) = self.layout_size(ctx, true);
@@ -2167,7 +2167,7 @@ impl AppWindow {
     fn on_init_layout(&mut self, ctx: &mut AppContext) {
         debug_assert!(self.first_layout);
 
-        profile_scope!("window({})::on_init_layout", self.id.sequential());
+        profile_scope!("window({}).on_init_layout", self.id.sequential());
 
         self.first_layout = false;
 
@@ -2501,7 +2501,7 @@ impl AppWindow {
             return;
         }
 
-        profile_scope!("window({})::on_render", self.id.sequential());
+        profile_scope!("window({}).on_render", self.id.sequential());
 
         let frame = self.render_frame(ctx);
 
@@ -2519,7 +2519,7 @@ impl AppWindow {
             return;
         }
 
-        profile_scope!("window({})::on_render_update", self.id.sequential());
+        profile_scope!("window({}).on_render_update", self.id.sequential());
 
         let capture_image = self.take_capture_image(ctx.vars);