diff --git a/package.json b/package.json
index 67eb017..e91eafa 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "arkvault",
   "private": true,
-  "version": "0.5.0",
+  "version": "0.5.1",
   "type": "module",
   "scripts": {
     "dev": "vite dev",
diff --git a/src/lib/indexedDB/filesystem.ts b/src/lib/indexedDB/filesystem.ts
index 1c2c060..cf60b93 100644
--- a/src/lib/indexedDB/filesystem.ts
+++ b/src/lib/indexedDB/filesystem.ts
@@ -25,6 +25,7 @@ interface CategoryInfo {
   parentId: CategoryId;
   name: string;
   files: { id: number; isRecursive: boolean }[];
+  isFileRecursive: boolean;
 }
 
 const filesystem = new Dexie("filesystem") as Dexie & {
@@ -33,11 +34,21 @@ const filesystem = new Dexie("filesystem") as Dexie & {
   category: EntityTable<CategoryInfo, "id">;
 };
 
-filesystem.version(2).stores({
-  directory: "id, parentId",
-  file: "id, parentId",
-  category: "id, parentId",
-});
+filesystem
+  .version(3)
+  .stores({
+    directory: "id, parentId",
+    file: "id, parentId",
+    category: "id, parentId",
+  })
+  .upgrade(async (trx) => {
+    await trx
+      .table("category")
+      .toCollection()
+      .modify((category) => {
+        category.isFileRecursive = false;
+      });
+  });
 
 export const getDirectoryInfos = async (parentId: DirectoryId) => {
   return await filesystem.directory.where({ parentId }).toArray();
@@ -87,6 +98,10 @@ export const storeCategoryInfo = async (categoryInfo: CategoryInfo) => {
   await filesystem.category.put(categoryInfo);
 };
 
+export const updateCategoryInfo = async (id: number, changes: { isFileRecursive?: boolean }) => {
+  await filesystem.category.update(id, changes);
+};
+
 export const deleteCategoryInfo = async (id: number) => {
   await filesystem.category.delete(id);
 };
diff --git a/src/lib/modules/filesystem.ts b/src/lib/modules/filesystem.ts
index eaf1d1a..c160534 100644
--- a/src/lib/modules/filesystem.ts
+++ b/src/lib/modules/filesystem.ts
@@ -12,6 +12,7 @@ import {
   getCategoryInfos as getCategoryInfosFromIndexedDB,
   getCategoryInfo as getCategoryInfoFromIndexedDB,
   storeCategoryInfo,
+  updateCategoryInfo as updateCategoryInfoInIndexedDB,
   deleteCategoryInfo,
   type DirectoryId,
   type CategoryId,
@@ -62,6 +63,7 @@ export type CategoryInfo =
       name?: undefined;
       subCategoryIds: number[];
       files?: undefined;
+      isFileRecursive?: undefined;
     }
   | {
       id: number;
@@ -70,6 +72,7 @@ export type CategoryInfo =
       name: string;
       subCategoryIds: number[];
       files: { id: number; isRecursive: boolean }[];
+      isFileRecursive: boolean;
     };
 
 const directoryInfoStore = new Map<DirectoryId, Writable<DirectoryInfo | null>>();
@@ -255,7 +258,13 @@ const fetchCategoryInfoFromIndexedDB = async (
     info.set({ id, subCategoryIds });
   } else {
     if (!category) return;
-    info.set({ id, name: category.name, subCategoryIds, files: category.files });
+    info.set({
+      id,
+      name: category.name,
+      subCategoryIds,
+      files: category.files,
+      isFileRecursive: category.isFileRecursive,
+    });
   }
 };
 
@@ -288,20 +297,28 @@ const fetchCategoryInfoFromServer = async (
 
     const { files }: CategoryFileListResponse = await res.json();
     const filesMapped = files.map(({ file, isRecursive }) => ({ id: file, isRecursive }));
+    let isFileRecursive: boolean | undefined = undefined;
 
-    info.set({
-      id,
-      dataKey,
-      dataKeyVersion: new Date(metadata!.dekVersion),
-      name,
-      subCategoryIds: subCategories,
-      files: filesMapped,
+    info.update((value) => {
+      const newValue = {
+        isFileRecursive: false,
+        ...value,
+        id,
+        dataKey,
+        dataKeyVersion: new Date(metadata!.dekVersion),
+        name,
+        subCategoryIds: subCategories,
+        files: filesMapped,
+      };
+      isFileRecursive = newValue.isFileRecursive;
+      return newValue;
     });
     await storeCategoryInfo({
       id,
       parentId: metadata!.parent,
       name,
       files: filesMapped,
+      isFileRecursive: isFileRecursive!,
     });
   }
 };
@@ -327,3 +344,17 @@ export const getCategoryInfo = (categoryId: CategoryId, masterKey: CryptoKey) =>
   fetchCategoryInfo(categoryId, info, masterKey); // Intended
   return info;
 };
+
+export const updateCategoryInfo = async (
+  categoryId: number,
+  changes: { isFileRecursive?: boolean },
+) => {
+  await updateCategoryInfoInIndexedDB(categoryId, changes);
+  categoryInfoStore.get(categoryId)?.update((value) => {
+    if (!value) return value;
+    if (changes.isFileRecursive !== undefined) {
+      value.isFileRecursive = changes.isFileRecursive;
+    }
+    return value;
+  });
+};
diff --git a/src/lib/modules/thumbnail.ts b/src/lib/modules/thumbnail.ts
index 9c009bd..2d5cd55 100644
--- a/src/lib/modules/thumbnail.ts
+++ b/src/lib/modules/thumbnail.ts
@@ -32,7 +32,7 @@ const capture = (
 
     drawer(context, scaledWidth, scaledHeight);
     canvas.toBlob((blob) => {
-      if (blob) {
+      if (blob && blob.type === "image/webp") {
         resolve(blob);
       } else {
         reject(new Error("Failed to generate thumbnail"));
@@ -83,18 +83,26 @@ const generateVideoThumbnail = (videoUrl: string, time = 0) => {
 export const generateThumbnail = async (fileBuffer: ArrayBuffer, fileType: string) => {
   let url;
   try {
-    if (fileType === "image/heic") {
-      const { default: heic2any } = await import("heic2any");
-      url = URL.createObjectURL(
-        (await heic2any({
-          blob: new Blob([fileBuffer], { type: fileType }),
-          toType: "image/png",
-        })) as Blob,
-      );
-      return await generateImageThumbnail(url);
-    } else if (fileType.startsWith("image/")) {
-      url = URL.createObjectURL(new Blob([fileBuffer], { type: fileType }));
-      return await generateImageThumbnail(url);
+    if (fileType.startsWith("image/")) {
+      const fileBlob = new Blob([fileBuffer], { type: fileType });
+      url = URL.createObjectURL(fileBlob);
+
+      try {
+        return await generateImageThumbnail(url);
+      } catch {
+        URL.revokeObjectURL(url);
+        url = undefined;
+
+        if (fileType === "image/heic") {
+          const { default: heic2any } = await import("heic2any");
+          url = URL.createObjectURL(
+            (await heic2any({ blob: fileBlob, toType: "image/png" })) as Blob,
+          );
+          return await generateImageThumbnail(url);
+        } else {
+          return null;
+        }
+      }
     } else if (fileType.startsWith("video/")) {
       url = URL.createObjectURL(new Blob([fileBuffer], { type: fileType }));
       return await generateVideoThumbnail(url);
diff --git a/src/routes/(fullscreen)/auth/changePassword/+page.svelte b/src/routes/(fullscreen)/auth/changePassword/+page.svelte
index 25ded91..b8cabff 100644
--- a/src/routes/(fullscreen)/auth/changePassword/+page.svelte
+++ b/src/routes/(fullscreen)/auth/changePassword/+page.svelte
@@ -6,8 +6,14 @@
 
   let oldPassword = $state("");
   let newPassword = $state("");
+  let confirmPassword = $state("");
 
   const changePassword = async () => {
+    if (newPassword !== confirmPassword) {
+      // TODO: Alert
+      return;
+    }
+
     if (await requestPasswordChange(oldPassword, newPassword)) {
       await goto("/menu");
     }
@@ -30,6 +36,7 @@
 
     <TextInput bind:value={oldPassword} placeholder="기존 비밀번호" type="password" />
     <TextInput bind:value={newPassword} placeholder="새 비밀번호" type="password" />
+    <TextInput bind:value={confirmPassword} placeholder="새 비밀번호 확인" type="password" />
   </TitledDiv>
   <BottomDiv>
     <Button onclick={changePassword} class="w-full">비밀번호 바꾸기</Button>
diff --git a/src/routes/(fullscreen)/file/[id]/+page.svelte b/src/routes/(fullscreen)/file/[id]/+page.svelte
index 61465bd..4047e7c 100644
--- a/src/routes/(fullscreen)/file/[id]/+page.svelte
+++ b/src/routes/(fullscreen)/file/[id]/+page.svelte
@@ -43,22 +43,31 @@
   let isDownloadRequested = $state(false);
   let viewerType: "image" | "video" | undefined = $state();
   let fileBlobUrl: string | undefined = $state();
+  let heicBlob: Blob | undefined = $state();
   let videoElement: HTMLVideoElement | undefined = $state();
 
   const updateViewer = async (buffer: ArrayBuffer, contentType: string) => {
     const fileBlob = new Blob([buffer], { type: contentType });
-    if (contentType === "image/heic") {
-      const { default: heic2any } = await import("heic2any");
-      fileBlobUrl = URL.createObjectURL(
-        (await heic2any({ blob: fileBlob, toType: "image/jpeg" })) as Blob,
-      );
-    } else if (viewerType) {
+    if (viewerType) {
       fileBlobUrl = URL.createObjectURL(fileBlob);
+      heicBlob = contentType === "image/heic" ? fileBlob : undefined;
     }
-
     return fileBlob;
   };
 
+  const convertHeicToJpeg = async () => {
+    if (!heicBlob) return;
+
+    URL.revokeObjectURL(fileBlobUrl!);
+    fileBlobUrl = undefined;
+
+    const { default: heic2any } = await import("heic2any");
+    fileBlobUrl = URL.createObjectURL(
+      (await heic2any({ blob: heicBlob, toType: "image/jpeg" })) as Blob,
+    );
+    heicBlob = undefined;
+  };
+
   const updateThumbnail = async (dataKey: CryptoKey, dataKeyVersion: Date) => {
     const thumbnail = await captureVideoThumbnail(videoElement!);
     await requestThumbnailUpload(data.id, thumbnail, dataKey, dataKeyVersion);
@@ -136,7 +145,7 @@
 
         {#if viewerType === "image"}
           {#if fileBlobUrl}
-            <img src={fileBlobUrl} alt={$info.name} />
+            <img src={fileBlobUrl} alt={$info.name} onerror={convertHeicToJpeg} />
           {:else}
             {@render viewerLoading("이미지를 불러오고 있어요.")}
           {/if}
diff --git a/src/routes/(main)/category/[[id]]/+page.svelte b/src/routes/(main)/category/[[id]]/+page.svelte
index 9bfa2a4..9cbc41c 100644
--- a/src/routes/(main)/category/[[id]]/+page.svelte
+++ b/src/routes/(main)/category/[[id]]/+page.svelte
@@ -3,7 +3,7 @@
   import { goto } from "$app/navigation";
   import { TopBar } from "$lib/components/molecules";
   import { Category, CategoryCreateModal } from "$lib/components/organisms";
-  import { getCategoryInfo, type CategoryInfo } from "$lib/modules/filesystem";
+  import { getCategoryInfo, updateCategoryInfo, type CategoryInfo } from "$lib/modules/filesystem";
   import { masterKeyStore } from "$lib/stores";
   import CategoryDeleteModal from "./CategoryDeleteModal.svelte";
   import CategoryMenuBottomSheet from "./CategoryMenuBottomSheet.svelte";
@@ -21,7 +21,7 @@
 
   let info: Writable<CategoryInfo | null> | undefined = $state();
 
-  let isFileRecursive = $state(false);
+  let isFileRecursive: boolean | undefined = $state();
 
   let isCategoryCreateModalOpen = $state(false);
   let isCategoryMenuBottomSheetOpen = $state(false);
@@ -30,6 +30,19 @@
 
   $effect(() => {
     info = getCategoryInfo(data.id, $masterKeyStore?.get(1)?.key!);
+    isFileRecursive = undefined;
+  });
+
+  $effect(() => {
+    if ($info && isFileRecursive === undefined) {
+      isFileRecursive = $info.isFileRecursive ?? false;
+    }
+  });
+
+  $effect(() => {
+    if (data.id !== "root" && $info?.isFileRecursive !== isFileRecursive) {
+      updateCategoryInfo(data.id as number, { isFileRecursive });
+    }
   });
 </script>
 
@@ -41,7 +54,7 @@
   <TopBar title={$info?.name} />
 {/if}
 <div class="min-h-full bg-gray-100 pb-[5.5em]">
-  {#if $info}
+  {#if $info && isFileRecursive !== undefined}
     <Category
       bind:isFileRecursive
       info={$info}