diff --git a/src/index.ts b/src/index.ts
index 93e200c5..abf0520b 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -120,7 +120,11 @@ export * from './enums/alignment.js';
  */
 export { type DiscriminatedItem, getMimetype } from './item/item.js';
 export * from './item/itemSettings.js';
-export { type PackedItem } from './item/packedItem.js';
+export {
+  type PackedItem,
+  ThumbnailSizeInPackedItem,
+  type ThumbnailsBySize,
+} from './item/packedItem.js';
 export * from './item/itemType.js';
 export * from './item/itemUtils.js';
 export * from './item/events/itemFeedbackOperationEvent.js';
diff --git a/src/item/packedItem.ts b/src/item/packedItem.ts
index a9009d45..5cf95c75 100644
--- a/src/item/packedItem.ts
+++ b/src/item/packedItem.ts
@@ -1,12 +1,23 @@
 import { ItemMembership } from '../itemMembership/itemMembership.js';
 import { DiscriminatedItem } from './item.js';
 import { ItemSettings } from './itemSettings.js';
+import { ThumbnailSize } from '@/enums/thumbnailSizes.js';
 import { ItemTag } from '@/itemTag/itemTag.js';
+import { UnionOfConst } from '@/typeUtils.js';
+
+export const ThumbnailSizeInPackedItem = {
+  [ThumbnailSize.Small]: ThumbnailSize.Small,
+  [ThumbnailSize.Medium]: ThumbnailSize.Medium,
+} as const;
+export type ThumbnailsBySize = {
+  [thumbnailSize in UnionOfConst<typeof ThumbnailSizeInPackedItem>]: string;
+};
 
 export type PackedInformation = {
   permission: ItemMembership['permission'] | null;
   hidden?: ItemTag;
   public?: ItemTag;
+  thumbnails?: ThumbnailsBySize;
 };
 
 /**