diff --git a/testing/web-platform/tests/service-workers/service-worker/clients-matchall-frozen.https.html b/testing/web-platform/tests/service-workers/service-worker/clients-matchall-frozen.https.html
new file mode 100644
index 0000000000000..ef27ac3d372e5
--- /dev/null
+++ b/testing/web-platform/tests/service-workers/service-worker/clients-matchall-frozen.https.html
@@ -0,0 +1,103 @@
+<!DOCTYPE html>
+<title>Service Worker: Clients.matchAll</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="resources/test-helpers.sub.js"></script>
+<script>
+var scope = 'resources/clients-frame-freeze.html';
+var windows = [];
+var expected_window_1 =
+    {visibilityState: 'visible', focused: false, lifecycleState: "frozen", url: new URL(scope + '#1', location).toString(), type: 'window', frameType: 'top-level'};
+var expected_window_2 =
+    {visibilityState: 'visible', focused: false, lifecycleState: "active", url: new URL(scope + '#2', location).toString(), type: 'window', frameType: 'top-level'};
+function with_window(url, name) {
+  return new Promise(function(resolve) {
+    var child = window.open(url, name);
+    window.onmessage = () => {resolve(child)};
+  });
+}
+
+promise_test(function(t) {
+    return service_worker_unregister_and_register(
+        t, 'resources/clients-matchall-worker.js', scope)
+      .then(function(registration) {
+          t.add_cleanup(function() {
+              return service_worker_unregister(t, scope);
+            });
+
+          return wait_for_state(t, registration.installing, 'activated');
+        })
+      .then(function() { return with_window(scope + '#1', 'Child 1'); })
+      .then(function(window1) {
+          windows.push(window1);
+          return with_window(scope + '#2', 'Child 2');
+        })
+      .then(function(window2) {
+          windows.push(window2);
+          return new Promise(function(resolve) {
+              window.onmessage = resolve;
+              windows[0].postMessage('freeze');
+            });
+        })
+      .then(function() {
+          var channel = new MessageChannel();
+
+          return new Promise(function(resolve) {
+              channel.port1.onmessage = resolve;
+              windows[1].navigator.serviceWorker.controller.postMessage(
+                  {port:channel.port2, includeLifecycleState: true}, [channel.port2]);
+            });
+        })
+      .then(function(e) {
+          assert_equals(e.data.length, 1);
+          assert_object_equals(e.data[0], expected_window_2);
+        })
+      .then(function() {
+          var channel = new MessageChannel();
+
+          return new Promise(function(resolve) {
+              channel.port1.onmessage = resolve;
+              windows[1].navigator.serviceWorker.controller.postMessage(
+                  {port:channel.port2, options: {lifecycleState: "all"}, includeLifecycleState: true}, [channel.port2]);
+            });
+        })
+      .then(function(e) {
+          assert_equals(e.data.length, 2);
+          // No specific order is required, so support inversion.
+          if (e.data[0][3] == new URL(scope + '#2', location)) {
+            assert_object_equals(e.data[0], expected_window_2);
+            assert_object_equals(e.data[1], expected_window_1);
+          } else {
+            assert_object_equals(e.data[0], expected_window_1);
+            assert_object_equals(e.data[1], expected_window_2);
+          }
+        })
+      .then(function() {
+          var channel = new MessageChannel();
+
+          return new Promise(function(resolve) {
+              channel.port1.onmessage = resolve;
+              windows[1].navigator.serviceWorker.controller.postMessage(
+                  {port:channel.port2, options: {lifecycleState: "frozen"}, includeLifecycleState: true}, [channel.port2]);
+            });
+        })
+      .then(function(e) {
+          assert_equals(e.data.length, 1);
+          assert_object_equals(e.data[0], expected_window_1);
+        })
+      .then(function() {
+          var channel = new MessageChannel();
+
+          return new Promise(function(resolve) {
+              channel.port1.onmessage = resolve;
+              windows[1].navigator.serviceWorker.controller.postMessage(
+                  {port:channel.port2, options: {lifecycleState: "active"}, includeLifecycleState: true}, [channel.port2]);
+            });
+        })
+      .then(function(e) {
+          assert_equals(e.data.length, 1);
+          assert_object_equals(e.data[0], expected_window_2);
+      });
+}, 'Test Clients.matchAll()');
+
+</script>
diff --git a/testing/web-platform/tests/service-workers/service-worker/resources/clients-frame-freeze.html b/testing/web-platform/tests/service-workers/service-worker/resources/clients-frame-freeze.html
new file mode 100644
index 0000000000000..7468a660e9085
--- /dev/null
+++ b/testing/web-platform/tests/service-workers/service-worker/resources/clients-frame-freeze.html
@@ -0,0 +1,15 @@
+<!DOCTYPE html>
+<script src="/resources/testdriver.js"></script>
+<script src="/resources/testdriver-vendor.js"></script>
+<script>
+  document.addEventListener('freeze', () => {
+      opener.postMessage('frozen', "*");
+  });
+
+  window.onmessage = (e) => {
+    if (e.data == 'freeze') {
+      test_driver.freeze();
+    }
+  };
+  opener.postMessage('loaded', '*');
+</script>
diff --git a/testing/web-platform/tests/service-workers/service-worker/resources/clients-matchall-worker.js b/testing/web-platform/tests/service-workers/service-worker/resources/clients-matchall-worker.js
index d6634f4d40ef6..13e111a2f9146 100644
--- a/testing/web-platform/tests/service-workers/service-worker/resources/clients-matchall-worker.js
+++ b/testing/web-platform/tests/service-workers/service-worker/resources/clients-matchall-worker.js
@@ -13,11 +13,20 @@ self.onmessage = function(e) {
               // In that case, just pretend it's top-level!
               frame_type = 'top-level';
             }
-            message.push([client.visibilityState,
-                          client.focused,
-                          client.url,
-                          client.type,
-                          frame_type]);
+            if (e.data.includeLifecycleState) {
+              message.push({visibilityState: client.visibilityState,
+                            focused: client.focused,
+                            url: client.url,
+                            lifecycleState: client.lifecycleState,
+                            type: client.type,
+                            frameType: frame_type});
+            } else {
+              message.push([client.visibilityState,
+                            client.focused,
+                            client.url,
+                            client.type,
+                            frame_type]);
+            }
           });
         // Sort by url
         if (!e.data.disableSort) {
