diff --git a/package.json b/package.json
index 3646f604..70740b99 100644
--- a/package.json
+++ b/package.json
@@ -61,6 +61,7 @@
     "./packages/hyperion-react",
     "./packages/hyperion-autologging",
     "./packages/hyperion-autologging-plugin-eventhash",
+    "./packages/hyperion-autologging-plugin-network-performance-timing",
     "./packages/hyperion-autologging-visualizer",
     "./packages/hyperion-util",
     "./packages/hyperion-react-testapp",
@@ -70,6 +71,7 @@
     "hyperion-async-counter": "*",
     "hyperion-autologging": "*",
     "hyperion-autologging-plugin-eventhash": "*",
+    "hyperion-autologging-plugin-network-performance-timing": "*",
     "hyperion-autologging-visualizer": "*",
     "hyperion-channel": "*",
     "hyperion-core": "*",
diff --git a/packages/hyperion-autologging-plugin-network-performance-timing/.gitignore b/packages/hyperion-autologging-plugin-network-performance-timing/.gitignore
new file mode 100644
index 00000000..11995f85
--- /dev/null
+++ b/packages/hyperion-autologging-plugin-network-performance-timing/.gitignore
@@ -0,0 +1,7 @@
+*.log
+.DS_Store
+node_modules
+dist
+coverage
+package-lock.json
+test/**/*.js
diff --git a/packages/hyperion-autologging-plugin-network-performance-timing/.npmignore b/packages/hyperion-autologging-plugin-network-performance-timing/.npmignore
new file mode 100644
index 00000000..17c50f99
--- /dev/null
+++ b/packages/hyperion-autologging-plugin-network-performance-timing/.npmignore
@@ -0,0 +1,6 @@
+*.log
+.DS_Store
+coverage
+test/**/*.js
+jest.config.js
+babel.config.js
diff --git a/packages/hyperion-autologging-plugin-network-performance-timing/babel.config.js b/packages/hyperion-autologging-plugin-network-performance-timing/babel.config.js
new file mode 100644
index 00000000..a933e2ea
--- /dev/null
+++ b/packages/hyperion-autologging-plugin-network-performance-timing/babel.config.js
@@ -0,0 +1,2 @@
+const baseConfig = require('hyperion-devtools/babel.config');
+module.exports = baseConfig;
\ No newline at end of file
diff --git a/packages/hyperion-autologging-plugin-network-performance-timing/jest.config.js b/packages/hyperion-autologging-plugin-network-performance-timing/jest.config.js
new file mode 100644
index 00000000..e5536729
--- /dev/null
+++ b/packages/hyperion-autologging-plugin-network-performance-timing/jest.config.js
@@ -0,0 +1,6 @@
+const baseConfig = require('hyperion-devtools/jest.config');
+/*
+ * For a detailed explanation regarding each configuration property and type check, visit:
+ * https://jestjs.io/docs/configuration
+ */
+module.exports = baseConfig;
diff --git a/packages/hyperion-autologging-plugin-network-performance-timing/package.json b/packages/hyperion-autologging-plugin-network-performance-timing/package.json
new file mode 100644
index 00000000..865f51a2
--- /dev/null
+++ b/packages/hyperion-autologging-plugin-network-performance-timing/package.json
@@ -0,0 +1,41 @@
+{
+  "name": "hyperion-autologging-plugin-network-performance-timing",
+  "description": "plugin for autologging to add performance timing data to network responses",
+  "version": "0.3.4",
+  "license": "MIT",
+  "scripts": {
+    "build": "tsc",
+    "build-react": "react-scripts build",
+    "watch": "npm run build -- --watch",
+    "start": "npm run watch",
+    "test": "npm run build & jest"
+  },
+  "workspaces": [
+    "../hyperion-devtools",
+    "../hyperion-globals",
+    "../hyperion-channel"
+  ],
+  "dependencies": {
+    "hyperion-channel": "*",
+    "hyperion-globals": "*",
+    "xxhashjs": "^0.2.2"
+  },
+  "devDependencies": {
+    "hyperion-devtools": "*",
+    "@types/jest": "^29.5.14",
+    "@types/xxhashjs": "^0.2.4"
+  },
+  "eslintConfig": {},
+  "browserslist": {
+    "production": [
+      ">0.2%",
+      "not dead",
+      "not op_mini all"
+    ],
+    "development": [
+      "last 1 chrome version",
+      "last 1 firefox version",
+      "last 1 safari version"
+    ]
+  }
+}
diff --git a/packages/hyperion-autologging-plugin-network-performance-timing/src/index.ts b/packages/hyperion-autologging-plugin-network-performance-timing/src/index.ts
new file mode 100644
index 00000000..10d6decd
--- /dev/null
+++ b/packages/hyperion-autologging-plugin-network-performance-timing/src/index.ts
@@ -0,0 +1,42 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates. All Rights Reserved.
+ */
+
+'use strict';
+import * as ALEventExtension from "hyperion-autologging/src/ALEventExtension";
+import { ALNetworkResponseEvent } from "hyperion-autologging/src/ALNetworkPublisher";
+import type { ALChannelEvent } from "hyperion-autologging/src/AutoLogging";
+import { Channel } from "hyperion-channel";
+import { assert } from "hyperion-globals";
+import { TimedTrigger } from "hyperion-timed-trigger/src/TimedTrigger";
+
+export function init(channel: Channel<ALChannelEvent>): void {
+
+  const urls = new Map<string, ALNetworkResponseEvent>();
+  const observer = new PerformanceObserver((list) => {
+    for (const entry of list.getEntries()) {
+      assert(entry.entryType === 'resource', "Unexpected entry type!");
+      const url = entry.name;
+      const response = urls.get(url);
+      if (response) {
+        ALEventExtension.setEventExtension(response, 'perf', entry);
+        urls.delete(url);
+      }
+    }
+  });
+  observer.observe({ entryTypes: ['resource'] });
+
+  const cleaner = new TimedTrigger(() => {
+    urls.clear();
+  }, 1000 * 60); // Clear every  minutes
+
+  channel.addListener('al_network_response', eventData => {
+    urls.set(eventData.requestEvent.url, eventData);
+    if (cleaner.isDone()) {
+      cleaner.restart();
+    } else {
+      cleaner.delay();
+    }
+  });
+
+}
\ No newline at end of file
diff --git a/packages/hyperion-autologging-plugin-network-performance-timing/test/index.test.ts b/packages/hyperion-autologging-plugin-network-performance-timing/test/index.test.ts
new file mode 100644
index 00000000..e7e80d39
--- /dev/null
+++ b/packages/hyperion-autologging-plugin-network-performance-timing/test/index.test.ts
@@ -0,0 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates. All Rights Reserved.
+ *
+ * @jest-environment jsdom
+ */
+'use strict';
+
+test("empty test", () => {
+  expect(0);
+});
\ No newline at end of file
diff --git a/packages/hyperion-autologging-plugin-network-performance-timing/tsconfig.json b/packages/hyperion-autologging-plugin-network-performance-timing/tsconfig.json
new file mode 100644
index 00000000..b92b796f
--- /dev/null
+++ b/packages/hyperion-autologging-plugin-network-performance-timing/tsconfig.json
@@ -0,0 +1,11 @@
+{
+  // see https://www.typescriptlang.org/tsconfig to better understand tsconfigs
+  "extends": "hyperion-devtools",
+  "compilerOptions": {
+    // "jsx": "react-jsx",
+    "jsx": "preserve",
+  },
+  "include": [
+    "src",
+  ],
+}
\ No newline at end of file
diff --git a/packages/hyperion-autologging/src/ALNetworkPublisher.ts b/packages/hyperion-autologging/src/ALNetworkPublisher.ts
index 9778c933..56d27101 100644
--- a/packages/hyperion-autologging/src/ALNetworkPublisher.ts
+++ b/packages/hyperion-autologging/src/ALNetworkPublisher.ts
@@ -11,9 +11,9 @@ import { assert } from "hyperion-globals";
 import * as Types from "hyperion-util/src/Types";
 import performanceAbsoluteNow from "hyperion-util/src/performanceAbsoluteNow";
 import * as ALEventIndex from "./ALEventIndex";
-import { ALLoggableEvent, ALOptionalFlowletEvent, ALSharedInitOptions } from "./ALType";
+import { ALExtensibleEvent, ALLoggableEvent, ALOptionalFlowletEvent, ALSharedInitOptions } from "./ALType";
 
-type ALNetworkEvent = ALLoggableEvent & ALOptionalFlowletEvent & Readonly<{
+type ALNetworkEvent = ALLoggableEvent & ALOptionalFlowletEvent & ALExtensibleEvent & Readonly<{
   initiatorType: "fetch" | "xmlhttprequest"; // https://developer.mozilla.org/en-US/docs/Web/API/PerformanceResourceTiming/initiatorType
 }>;
 
diff --git a/packages/hyperion-react-testapp/package.json b/packages/hyperion-react-testapp/package.json
index d82799a7..9a757b61 100644
--- a/packages/hyperion-react-testapp/package.json
+++ b/packages/hyperion-react-testapp/package.json
@@ -9,7 +9,8 @@
     "../hyperion-react",
     "../hyperion-autologging",
     "../hyperion-autologging-visualizer",
-    "../hyperion-autologging-plugin-eventhash"
+    "../hyperion-autologging-plugin-eventhash",
+    "../hyperion-autologging-plugin-network-performance-timing"
   ],
   "dependencies": {
     "@testing-library/jest-dom": "^6.6.3",
@@ -22,6 +23,8 @@
     "@vitejs/plugin-react": "^4.3.4",
     "hyperion-autologging": "*",
     "hyperion-autologging-visualizer": "*",
+    "hyperion-autologging-plugin-eventhash": "*",
+    "hyperion-autologging-plugin-network-performance-timing": "*",
     "hyperion-globals": "*",
     "hyperion-hook": "*",
     "hyperion-react": "*",
@@ -60,4 +63,4 @@
       "last 1 safari version"
     ]
   }
-}
+}
\ No newline at end of file
diff --git a/packages/hyperion-react-testapp/src/AutoLoggingWrapper.ts b/packages/hyperion-react-testapp/src/AutoLoggingWrapper.ts
index b4a9d543..e0ba8b6c 100644
--- a/packages/hyperion-react-testapp/src/AutoLoggingWrapper.ts
+++ b/packages/hyperion-react-testapp/src/AutoLoggingWrapper.ts
@@ -19,6 +19,7 @@ import * as Flags from "hyperion-globals/src/Flags";
 import "hyperion-autologging/src/reference";
 import * as PluginEventHash from "hyperion-autologging-plugin-eventhash/src/index";
 import { getSessionFlowID } from "hyperion-autologging/src/ALSessionFlowID";
+import * as PluginNetworkPerformanceTiming from "hyperion-autologging-plugin-network-performance-timing/src/index";
 
 export let interceptionStatus = "disabled";
 
@@ -69,7 +70,8 @@ export function init() {
     flowletManager,
     channel,
     plugins: [
-      PluginEventHash.init
+      PluginEventHash.init,
+      PluginNetworkPerformanceTiming.init,
     ],
     componentNameValidator: testCompValidator,
     flowletPublisher: {