diff --git a/bridge/core/api/api.cc b/bridge/core/api/api.cc
index eb8b31fe4e..976fed70cc 100644
--- a/bridge/core/api/api.cc
+++ b/bridge/core/api/api.cc
@@ -72,18 +72,23 @@ void evaluateQuickjsByteCodeInternal(void* page_,
 
 void evaluateWbcInternal(void* page_,
                          uint8_t* bytes,
-                         int32_t byteLen,
+                         int32_t byte_len,
+                         int64_t profile_id,
                          Dart_PersistentHandle persistent_handle,
                          EvaluateQuickjsByteCodeCallback result_callback) {
   auto page = reinterpret_cast<webf::WebFPage*>(page_);
   assert(std::this_thread::get_id() == page->currentThread());
 
+  page->dartIsolateContext()->profiler()->StartTrackEvaluation(profile_id);
+
   size_t dataBlockSize;
   bool is_success;
   webf::Wbc wbc = webf::Wbc();
-  uint8_t* dataBlockBytes = wbc.prepareWbc(bytes, byteLen, &dataBlockSize);
+  uint8_t* dataBlockBytes = wbc.prepareWbc(bytes, byte_len, &dataBlockSize);
   if (dataBlockBytes == nullptr) {
+#if ENABLE_LOG
     WEBF_LOG(ERROR) << "prepareWbc error" << std::endl;
+#endif
     is_success = false;
   } else {
     std::vector<char> decompressedBytes;
@@ -95,14 +100,21 @@ void evaluateWbcInternal(void* page_,
     dataBlockBytes = NULL;
 
     if (decompressedSize < 0) {
+#if ENABLE_LOG
       WEBF_LOG(ERROR) << "LZ4 decompression failed with error code: " << decompressedSize << std::endl;
+#endif
       is_success = false;
     } else {
+#if ENABLE_LOG
       WEBF_LOG(VERBOSE) << "LZ4 decompression success! " << decompressedSize << std::endl;
+#endif
       is_success = page->evaluateByteCode(reinterpret_cast<uint8_t*>(decompressedBytes.data()), decompressedSize);
+      WEBF_LOG(VERBOSE) << " SUCCESS: " << is_success;
     }
   }
 
+  page->dartIsolateContext()->profiler()->FinishTrackEvaluation(profile_id);
+
   page->dartIsolateContext()->dispatcher()->PostToDart(page->isDedicated(), ReturnEvaluateQuickjsByteCodeResultToDart,
                                                        persistent_handle, result_callback, is_success);
 }
diff --git a/bridge/core/api/api.h b/bridge/core/api/api.h
index 97a28c627f..e73d8e6f75 100644
--- a/bridge/core/api/api.h
+++ b/bridge/core/api/api.h
@@ -30,7 +30,8 @@ void evaluateQuickjsByteCodeInternal(void* page_,
 
 void evaluateWbcInternal(void* page_,
                          uint8_t* bytes,
-                         int32_t byteLen,
+                         int32_t byte_len,
+                         int64_t profile_id,
                          Dart_PersistentHandle persistent_handle,
                          EvaluateQuickjsByteCodeCallback result_callback);
 void parseHTMLInternal(void* page_,
diff --git a/bridge/include/webf_bridge.h b/bridge/include/webf_bridge.h
index 535c9d15b3..d01b7d900c 100644
--- a/bridge/include/webf_bridge.h
+++ b/bridge/include/webf_bridge.h
@@ -100,6 +100,14 @@ void dumpQuickjsByteCode(void* page,
                          DumpQuickjsByteCodeCallback result_callback);
 
 WEBF_EXPORT_C
+void evaluateWbc(void* page_,
+                 uint8_t* bytes,
+                 int32_t byte_len,
+                 int64_t profile_id,
+                 Dart_Handle dart_handle,
+                 EvaluateQuickjsByteCodeCallback result_callback);
+
+    WEBF_EXPORT_C
 void parseHTML(void* page,
                char* code,
                int32_t length,
diff --git a/bridge/webf_bridge.cc b/bridge/webf_bridge.cc
index fc716d78c1..90a1dc3775 100644
--- a/bridge/webf_bridge.cc
+++ b/bridge/webf_bridge.cc
@@ -205,7 +205,8 @@ void parseHTML(void* page_,
 
 void evaluateWbc(void* page_,
                  uint8_t* bytes,
-                 int32_t byteLen,
+                 int32_t byte_len,
+                 int64_t profile_id,
                  Dart_Handle dart_handle,
                  EvaluateQuickjsByteCodeCallback result_callback) {
 #if ENABLE_LOG
@@ -214,7 +215,7 @@ void evaluateWbc(void* page_,
     auto page = reinterpret_cast<webf::WebFPage*>(page_);
     Dart_PersistentHandle persistent_handle = Dart_NewPersistentHandle_DL(dart_handle);
     page->dartIsolateContext()->dispatcher()->PostToJs(page->isDedicated(), page->contextId(),
-                                                       webf::evaluateWbcInternal, page_, bytes, byteLen,
+                                                       webf::evaluateWbcInternal, page_, bytes, byte_len, profile_id,
                                                        persistent_handle, result_callback);
 }
 
diff --git a/webf/example/assets/bundle.html b/webf/example/assets/bundle.html
index 431559ebb8..1be47ec9f3 100644
--- a/webf/example/assets/bundle.html
+++ b/webf/example/assets/bundle.html
@@ -46,6 +46,6 @@
     <script>
       console.log('Welcome to webf!');
     </script>
-    <script src="./bundle.js"></script>
+    <script src="./bundle.wbc1"></script>
   </body>
 </html>
diff --git a/webf/example/assets/bundle.wbc1 b/webf/example/assets/bundle.wbc1
new file mode 100644
index 0000000000..a69e018f83
Binary files /dev/null and b/webf/example/assets/bundle.wbc1 differ
diff --git a/webf/lib/src/bridge/to_native.dart b/webf/lib/src/bridge/to_native.dart
index b69ffa0dba..ea2a6d36ec 100644
--- a/webf/lib/src/bridge/to_native.dart
+++ b/webf/lib/src/bridge/to_native.dart
@@ -389,7 +389,7 @@ Future<bool> evaluateQuickjsByteCode(double contextId, Uint8List bytes, { Evalua
   return completer.future;
 }
 
-Future<bool> evaluateWbc(double contextId, Uint8List bytes) async {
+Future<bool> evaluateWbc(double contextId, Uint8List bytes,  { EvaluateOpItem? profileOp }) async {
   if (WebFController.getControllerOfJSContextId(contextId) == null) {
     return false;
   }
@@ -403,7 +403,7 @@ Future<bool> evaluateWbc(double contextId, Uint8List bytes) async {
   Pointer<NativeFunction<NativeEvaluateQuickjsByteCodeCallback>> nativeCallback =
   Pointer.fromFunction(handleEvaluateQuickjsByteCodeResult);
 
-  _evaluateWbc(_allocatedPages[contextId]!, byteData, bytes.length, context, nativeCallback);
+  _evaluateWbc(_allocatedPages[contextId]!, byteData, bytes.length, profileOp?.hashCode ?? 0, context, nativeCallback);
 
   return completer.future;
 }
diff --git a/webf/lib/src/html/script.dart b/webf/lib/src/html/script.dart
index 36c2af91f4..5376960bd2 100644
--- a/webf/lib/src/html/script.dart
+++ b/webf/lib/src/html/script.dart
@@ -49,11 +49,12 @@ class ScriptRunner {
       }
     } else if (bundle.isBytecode) {
       bool result = false;
-      if (bundle.url.contains('.kbc1')) {
-        result = await evaluateQuickjsByteCode(contextId, bundle.data!, profileOp: profileOp);
-      } else if (bundle.url.contains('.wbc1')) {
+      if (bundle.url.contains('.wbc1')) {
         result = await evaluateWbc(contextId, bundle.data!, profileOp: profileOp);
+      } else {
+        result = await evaluateQuickjsByteCode(contextId, bundle.data!, profileOp: profileOp);
       }
+      print('result: $result');
 
       if (!result) {
         throw FlutterError('Bytecode are not valid to execute.');