diff --git a/packages/playwright-core/src/utils/isomorphic/utilityScriptSerializers.ts b/packages/playwright-core/src/utils/isomorphic/utilityScriptSerializers.ts
index a523528f27975..6be0773adb097 100644
--- a/packages/playwright-core/src/utils/isomorphic/utilityScriptSerializers.ts
+++ b/packages/playwright-core/src/utils/isomorphic/utilityScriptSerializers.ts
@@ -28,7 +28,8 @@ export type SerializedValue =
     { o: { k: string, v: SerializedValue }[], id: number } |
     { ref: number } |
     { h: number } |
-    { ta: { b: string, k: TypedArrayKind } };
+    { ta: { b: string, k: TypedArrayKind } } |
+    { ab: { b: string } };
 
 type HandleOrValue = { h: number } | { fallThrough: any };
 
@@ -78,6 +79,14 @@ function isTypedArray(obj: any, constructor: Function): boolean {
   }
 }
 
+function isArrayBuffer(obj: any): obj is ArrayBuffer {
+  try {
+    return obj instanceof ArrayBuffer || Object.prototype.toString.call(obj) === '[object ArrayBuffer]';
+  } catch (error) {
+    return false;
+  }
+}
+
 const typedArrayConstructors: Record<TypedArrayKind, Function> = {
   i8: Int8Array,
   ui8: Uint8Array,
@@ -170,6 +179,8 @@ export function parseEvaluationResultValue(value: SerializedValue, handles: any[
       return handles[value.h];
     if ('ta' in value)
       return base64ToTypedArray(value.ta.b, typedArrayConstructors[value.ta.k]);
+    if ('ab' in value)
+      return base64ToTypedArray(value.ab.b, Uint8Array).buffer;
   }
   return value;
 }
@@ -244,6 +255,8 @@ function innerSerialize(value: any, handleSerializer: (value: any) => HandleOrVa
     if (isTypedArray(value, ctor))
       return { ta: { b: typedArrayToBase64(value), k } };
   }
+  if (isArrayBuffer(value))
+    return { ab: { b: typedArrayToBase64(new Uint8Array(value)) } };
 
   const id = visitorInfo.visited.get(value);
   if (id)
diff --git a/tests/assets/to-do-notifications/scripts/todo.js b/tests/assets/to-do-notifications/scripts/todo.js
index 52fee476a9545..42dd19a0c4097 100644
--- a/tests/assets/to-do-notifications/scripts/todo.js
+++ b/tests/assets/to-do-notifications/scripts/todo.js
@@ -91,11 +91,13 @@ window.onload = () => {
       }
       
       // Check which suffix the deadline day of the month needs
-      const { hours, minutes, day, month, year, notified, taskTitle } = cursor.value;
+      const { hours, minutes, day, month, year, notified, taskTitle, binaryTitle } = cursor.value;
       const ordDay = ordinal(day);
 
+      const decodedBinaryTitle = new TextDecoder().decode(new Uint8Array(binaryTitle));
+
       // Build the to-do list entry and put it into the list item.
-      const toDoText = `${taskTitle} — ${hours}:${minutes}, ${month} ${ordDay} ${year}.`;
+      const toDoText = `${taskTitle} [${decodedBinaryTitle}] — ${hours}:${minutes}, ${month} ${ordDay} ${year}.`;
       const listItem = createListItem(toDoText);
 
       if (notified === 'yes') {
@@ -140,7 +142,7 @@ window.onload = () => {
     
     // Grab the values entered into the form fields and store them in an object ready for being inserted into the IndexedDB
     const newItem = [
-      { taskTitle: title.value, hours: hours.value, minutes: minutes.value, day: day.value, month: month.value, year: year.value, notified: 'no' },
+      { taskTitle: title.value, hours: hours.value, minutes: minutes.value, day: day.value, month: month.value, year: year.value, notified: 'no', binaryTitle: new TextEncoder().encode(title.value).buffer },
     ];
 
     // Open a read/write DB transaction, ready for adding the data
diff --git a/tests/library/browsercontext-storage-state.spec.ts b/tests/library/browsercontext-storage-state.spec.ts
index 4f4fca6cee201..b3e0d5bae94b2 100644
--- a/tests/library/browsercontext-storage-state.spec.ts
+++ b/tests/library/browsercontext-storage-state.spec.ts
@@ -409,14 +409,18 @@ it('should support IndexedDB', async ({ page, server, contextFactory }) => {
               keyPath: 'taskTitle',
               records: [
                 {
-                  value: {
-                    day: '01',
-                    hours: '1',
-                    minutes: '1',
-                    month: 'January',
-                    notified: 'no',
-                    taskTitle: 'Pet the cat',
-                    year: '2025',
+                  valueEncoded: {
+                    id: 1,
+                    o: [
+                      { k: 'taskTitle', v: 'Pet the cat' },
+                      { k: 'hours', v: '1' },
+                      { k: 'minutes', v: '1' },
+                      { k: 'day', v: '01' },
+                      { k: 'month', v: 'January' },
+                      { k: 'year', v: '2025' },
+                      { k: 'notified', v: 'no' },
+                      { k: 'binaryTitle', v: { ab: { b: 'UGV0IHRoZSBjYXQ=' } }, }
+                    ]
                   },
                 },
               ],
@@ -473,7 +477,7 @@ it('should support IndexedDB', async ({ page, server, contextFactory }) => {
   await expect(recreatedPage.locator('#task-list')).toMatchAriaSnapshot(`
     - list:
       - listitem:
-        - text: /Pet the cat/
+        - text: /Pet the cat \\[Pet the cat\\]/
   `);
 
   expect(await context.storageState()).toEqual({ cookies: [], origins: [] });