diff --git a/web/src/lib/storage/memory.ts b/web/src/lib/storage/memory.ts
index f238b1a1..2652c8cb 100644
--- a/web/src/lib/storage/memory.ts
+++ b/web/src/lib/storage/memory.ts
@@ -48,7 +48,7 @@ export class MemoryStorage extends AbstractStorage {
             }
         }
 
-        return new Blob(outputView);
+        return new File(outputView, crypto.randomUUID());
     }
 
     #expand(size: number) {
diff --git a/web/src/lib/storage/storage.ts b/web/src/lib/storage/storage.ts
index 4df68633..5b50eceb 100644
--- a/web/src/lib/storage/storage.ts
+++ b/web/src/lib/storage/storage.ts
@@ -7,8 +7,7 @@ export abstract class AbstractStorage {
         return false;
     }
 
-    abstract res(): Promise<Blob>;
+    abstract res(): Promise<File>;
     abstract write(data: Uint8Array | Int8Array, offset: number): Promise<number>;
     abstract destroy(): Promise<void>;
 };
-