diff --git a/projects/ucap-webmessenger-app/src/app/layouts/common/dialogs/file-viewer.dialog.component.ts b/projects/ucap-webmessenger-app/src/app/layouts/common/dialogs/file-viewer.dialog.component.ts
index 489bd5fc..f56ba5fa 100644
--- a/projects/ucap-webmessenger-app/src/app/layouts/common/dialogs/file-viewer.dialog.component.ts
+++ b/projects/ucap-webmessenger-app/src/app/layouts/common/dialogs/file-viewer.dialog.component.ts
@@ -3,18 +3,10 @@ import { Component, OnInit, OnDestroy, Inject } from '@angular/core';
 import { MatDialogRef, MAT_DIALOG_DATA } from '@angular/material';
 import { NGXLogger } from 'ngx-logger';
 import { FileEventJson } from '@ucap-webmessenger/protocol-event';
-import { DeviceType, FileUtil, MimeUtil } from '@ucap-webmessenger/core';
-import { NativeService, UCAP_NATIVE_SERVICE } from '@ucap-webmessenger/native';
-import { take, map, finalize, tap } from 'rxjs/operators';
-import {
-  SnackBarService,
-  AlertSnackbarComponent,
-  AlertSnackbarData
-} from '@ucap-webmessenger/ui';
+import { DeviceType } from '@ucap-webmessenger/core';
 import { FileDownloadItem } from '@ucap-webmessenger/api';
 import { CommonApiService } from '@ucap-webmessenger/api-common';
-import { TranslateService } from '@ngx-translate/core';
-import { FileProtocolService } from '@ucap-webmessenger/protocol-file';
+import { AppFileService } from '@app/services/file.service';
 
 export interface FileViewerDialogData {
   fileInfo: FileEventJson;
@@ -46,11 +38,8 @@ export class FileViewerDialogComponent implements OnInit, OnDestroy {
       FileViewerDialogResult
     >,
     @Inject(MAT_DIALOG_DATA) public data: FileViewerDialogData,
-    @Inject(UCAP_NATIVE_SERVICE) private nativeService: NativeService,
-    private translateService: TranslateService,
-    private snackBarService: SnackBarService,
     private commonApiService: CommonApiService,
-    private fileProtocolService: FileProtocolService,
+    private appFileService: AppFileService,
     private logger: NGXLogger
   ) {
     this.fileInfo = data.fileInfo;
@@ -75,93 +64,17 @@ export class FileViewerDialogComponent implements OnInit, OnDestroy {
   ngOnDestroy(): void {}
 
   onDownload(fileDownloadItem: FileDownloadItem): void {
-    this.commonApiService
-      .fileTalkDownload(
-        {
-          userSeq: this.userSeq,
-          deviceType: this.deviceType,
-          token: this.token,
-          attachmentsSeq: this.fileInfo.attachmentSeq,
-          fileDownloadItem
-        },
-        this.downloadUrl
-      )
-      .pipe(
-        take(1),
-        map(async rawBlob => {
-          const mimeType = MimeUtil.getMimeFromExtension(this.fileInfo.fileExt);
-          const blob = rawBlob.slice(0, rawBlob.size, mimeType);
-
-          FileUtil.fromBlobToBuffer(blob)
-            .then(buffer => {
-              /** download check */
-              this.fileProtocolService
-                .downCheck({
-                  seq: this.fileInfo.attachmentSeq
-                })
-                .pipe(take(1))
-                .subscribe();
-
-              this.nativeService
-                .saveFile(buffer, this.fileInfo.fileName, mimeType)
-                .then(result => {
-                  if (!!result) {
-                    this.snackBarService.open(
-                      this.translateService.instant(
-                        'common.file.results.savedToPath',
-                        {
-                          path: result
-                        }
-                      ),
-                      '',
-                      {
-                        duration: 3000,
-                        verticalPosition: 'bottom'
-                      }
-                    );
-                  } else {
-                    this.snackBarService.openFromComponent<
-                      AlertSnackbarComponent,
-                      AlertSnackbarData
-                    >(AlertSnackbarComponent, {
-                      data: {
-                        html: this.translateService.instant(
-                          'common.file.errors.failToSave'
-                        ),
-                        buttonText: this.translateService.instant(
-                          'common.file.errors.label'
-                        )
-                      }
-                    });
-                  }
-                })
-                .catch(reason => {
-                  this.snackBarService.openFromComponent<
-                    AlertSnackbarComponent,
-                    AlertSnackbarData
-                  >(AlertSnackbarComponent, {
-                    data: {
-                      html: this.translateService.instant(
-                        'common.file.errors.failToSave'
-                      ),
-                      buttonText: this.translateService.instant(
-                        'common.file.errors.label'
-                      )
-                    }
-                  });
-                });
-            })
-            .catch(reason => {
-              this.logger.error('download', reason);
-            });
-        }),
-        finalize(() => {
-          setTimeout(() => {
-            fileDownloadItem.downloadingProgress$ = undefined;
-          }, 1000);
-        })
-      )
-      .subscribe();
+    this.appFileService.fileTalkDownlod({
+      req: {
+        userSeq: this.userSeq,
+        deviceType: this.deviceType,
+        token: this.token,
+        attachmentsSeq: this.fileInfo.attachmentSeq,
+        fileDownloadItem
+      },
+      fileName: this.fileInfo.fileName,
+      fileDownloadUrl: this.downloadUrl
+    });
   }
 
   onClosedViewer(): void {
diff --git a/projects/ucap-webmessenger-app/src/app/layouts/messenger/components/messages.component.ts b/projects/ucap-webmessenger-app/src/app/layouts/messenger/components/messages.component.ts
index 7bbecb02..b3cca3fc 100644
--- a/projects/ucap-webmessenger-app/src/app/layouts/messenger/components/messages.component.ts
+++ b/projects/ucap-webmessenger-app/src/app/layouts/messenger/components/messages.component.ts
@@ -8,9 +8,7 @@ import {
   EventEmitter,
   Inject,
   ChangeDetectorRef,
-  ChangeDetectionStrategy,
-  ElementRef,
-  NgZone
+  ChangeDetectionStrategy
 } from '@angular/core';
 import {
   ucapAnimations,
@@ -24,20 +22,11 @@ import {
   AlertDialogData,
   AlertDialogResult,
   FileUploadQueueComponent,
-  StringUtil,
-  AlertSnackbarComponent,
-  AlertSnackbarData
+  StringUtil
 } from '@ucap-webmessenger/ui';
 import { Store, select } from '@ngrx/store';
 import { NGXLogger } from 'ngx-logger';
-import {
-  Observable,
-  Subscription,
-  forkJoin,
-  combineLatest,
-  of,
-  BehaviorSubject
-} from 'rxjs';
+import { Observable, Subscription, forkJoin, of, BehaviorSubject } from 'rxjs';
 
 import {
   Info,
@@ -78,7 +67,7 @@ import {
   RoomType,
   UserInfoShort
 } from '@ucap-webmessenger/protocol-room';
-import { tap, take, map, catchError, finalize } from 'rxjs/operators';
+import { take, map, catchError } from 'rxjs/operators';
 import {
   FormComponent as UCapUiChatFormComponent,
   MessagesComponent as UCapUiChatMessagesComponent
@@ -108,7 +97,7 @@ import {
   FileViewerDialogData,
   FileViewerDialogResult
 } from '@app/layouts/common/dialogs/file-viewer.dialog.component';
-import { FileUtil, StickerFilesInfo, MimeUtil } from '@ucap-webmessenger/core';
+import { FileUtil, StickerFilesInfo } from '@ucap-webmessenger/core';
 
 import { StatusCode } from '@ucap-webmessenger/api';
 import {
@@ -131,12 +120,13 @@ import { NativeService, UCAP_NATIVE_SERVICE } from '@ucap-webmessenger/native';
 import { TranslateService } from '@ngx-translate/core';
 import { TranslatePipe } from 'projects/ucap-webmessenger-ui/src/lib/pipes/translate.pipe';
 import { TranslateService as UiTranslateService } from '@ucap-webmessenger/ui';
-import { FileProtocolService } from '@ucap-webmessenger/protocol-file';
+
 import {
   ClipboardDialogComponent,
   ClipboardDialogData,
   ClipboardDialogResult
 } from '../dialogs/chat/clipboard.dialog.component';
+import { AppFileService } from '@app/services/file.service';
 
 @Component({
   selector: 'app-layout-messenger-messages',
@@ -241,7 +231,6 @@ export class MessagesComponent implements OnInit, OnDestroy, AfterViewInit {
     private sessionStorageService: SessionStorageService,
     private localStorageService: LocalStorageService,
     private commonApiService: CommonApiService,
-    private fileProtocolService: FileProtocolService,
     private clipboardService: ClipboardService,
     private uiTranslateService: UiTranslateService,
     private translateService: TranslateService,
@@ -249,7 +238,7 @@ export class MessagesComponent implements OnInit, OnDestroy, AfterViewInit {
     private dialogService: DialogService,
     private snackBarService: SnackBarService,
     @Inject(UCAP_NATIVE_SERVICE) private nativeService: NativeService,
-    private ngZone: NgZone,
+    private appFileService: AppFileService,
     private logger: NGXLogger
   ) {
     this.sessionVerInfo = this.sessionStorageService.get<VersionInfo2Response>(
@@ -482,7 +471,7 @@ export class MessagesComponent implements OnInit, OnDestroy, AfterViewInit {
 
     // Chat Formfield Clear..
     if (!!this.chatForm) {
-      this.chatForm.replyForm.reset();
+      this.chatForm.replyInput.nativeElement.value = '';
     }
   }
 
@@ -693,7 +682,7 @@ export class MessagesComponent implements OnInit, OnDestroy, AfterViewInit {
         req: {
           roomSeq: this.roomInfoSubject.value.roomSeq,
           eventType: EventType.Character,
-          sentMessage: message
+          sentMessage: StringUtil.escapeHtml(message)
         }
       })
     );
@@ -728,7 +717,7 @@ export class MessagesComponent implements OnInit, OnDestroy, AfterViewInit {
     const stickerJson: StickerEventJson = {
       name: '스티커',
       file: this.selectedSticker.index,
-      chat: !!message ? message.trim() : ''
+      chat: !!message ? StringUtil.escapeHtml(message.trim()) : ''
     };
     this.store.dispatch(
       EventStore.send({
@@ -761,7 +750,7 @@ export class MessagesComponent implements OnInit, OnDestroy, AfterViewInit {
   /** Send Translation message */
   sendMessageOfTranslate(message: string) {
     const destLocale = this.destLocale;
-    const original = message;
+    const original = StringUtil.escapeHtml(message);
     const roomSeq = this.roomInfoSubject.value.roomSeq;
 
     if (!!this.isTranslationProcess) {
@@ -1052,103 +1041,17 @@ export class MessagesComponent implements OnInit, OnDestroy, AfterViewInit {
     },
     savePath?: string
   ) {
-    this.commonApiService
-      .fileTalkDownload({
+    this.appFileService.fileTalkDownlod({
+      req: {
         userSeq: this.loginResSubject.value.userSeq,
         deviceType: this.environmentsInfo.deviceType,
         token: this.loginResSubject.value.tokenString,
         attachmentsSeq: value.fileInfo.attachmentSeq,
         fileDownloadItem: value.fileDownloadItem
-      })
-      .pipe(
-        take(1),
-        map(async rawBlob => {
-          const mimeType = MimeUtil.getMimeFromExtension(
-            FileUtil.getExtension(value.fileInfo.fileName)
-          );
-          const blob = rawBlob.slice(0, rawBlob.size, mimeType);
-
-          FileUtil.fromBlobToBuffer(blob)
-            .then(buffer => {
-              /** download check */
-              this.fileProtocolService
-                .downCheck({
-                  seq: value.fileInfo.attachmentSeq
-                })
-                .pipe(take(1))
-                .subscribe();
-
-              this.nativeService
-                .saveFile(buffer, value.fileInfo.fileName, mimeType, savePath)
-                .then(result => {
-                  if (!!result) {
-                    const snackBarRef = this.snackBarService.open(
-                      this.translateService.instant(
-                        'common.file.results.savedToPath',
-                        {
-                          path: result
-                        }
-                      ),
-                      this.translateService.instant('common.file.open'),
-                      {
-                        duration: 3000,
-                        verticalPosition: 'bottom',
-                        horizontalPosition: 'center'
-                      }
-                    );
-
-                    snackBarRef.onAction().subscribe(() => {
-                      this.ngZone.runOutsideAngular(() => {
-                        this.nativeService
-                          .openTargetItem(result)
-                          .catch(reason => {
-                            this.logger.warn(reason);
-                          });
-                      });
-                    });
-                  } else {
-                    this.snackBarService.openFromComponent<
-                      AlertSnackbarComponent,
-                      AlertSnackbarData
-                    >(AlertSnackbarComponent, {
-                      data: {
-                        html: this.translateService.instant(
-                          'common.file.errors.failToSave'
-                        ),
-                        buttonText: this.translateService.instant(
-                          'common.file.errors.label'
-                        )
-                      }
-                    });
-                  }
-                })
-                .catch(reason => {
-                  this.snackBarService.openFromComponent<
-                    AlertSnackbarComponent,
-                    AlertSnackbarData
-                  >(AlertSnackbarComponent, {
-                    data: {
-                      html: this.translateService.instant(
-                        'common.file.errors.failToSave'
-                      ),
-                      buttonText: this.translateService.instant(
-                        'common.file.errors.label'
-                      )
-                    }
-                  });
-                });
-            })
-            .catch(reason => {
-              this.logger.error('download', reason);
-            });
-        }),
-        finalize(() => {
-          setTimeout(() => {
-            value.fileDownloadItem.downloadingProgress$ = undefined;
-          }, 1000);
-        })
-      )
-      .subscribe();
+      },
+      fileName: value.fileInfo.fileName,
+      savePath
+    });
   }
 
   async onFileSelected(fileUploadItems: FileUploadItem[]) {
@@ -2028,7 +1931,7 @@ export class MessagesComponent implements OnInit, OnDestroy, AfterViewInit {
         });
 
         if (result.selected.text) {
-          this.onSendMessage(data.text);
+          this.onSendMessage(data.text.replace(/\t/g, '    '));
         }
 
         if (result.selected.image) {
diff --git a/projects/ucap-webmessenger-app/src/app/layouts/messenger/components/right-drawer/album-box.component.ts b/projects/ucap-webmessenger-app/src/app/layouts/messenger/components/right-drawer/album-box.component.ts
index e8fc9e0d..2a579ef2 100644
--- a/projects/ucap-webmessenger-app/src/app/layouts/messenger/components/right-drawer/album-box.component.ts
+++ b/projects/ucap-webmessenger-app/src/app/layouts/messenger/components/right-drawer/album-box.component.ts
@@ -9,15 +9,14 @@ import {
 import {
   FileInfo,
   FileDownloadInfo,
-  FileType,
-  FileProtocolService
+  FileType
 } from '@ucap-webmessenger/protocol-file';
 import { Subscription, combineLatest } from 'rxjs';
 import { Store, select } from '@ngrx/store';
 
 import * as AppStore from '@app/store';
-import { tap, map, take, finalize } from 'rxjs/operators';
-import { FileUtil, MimeUtil } from '@ucap-webmessenger/core';
+import { tap } from 'rxjs/operators';
+import { FileUtil } from '@ucap-webmessenger/core';
 import { CommonApiService } from '@ucap-webmessenger/api-common';
 import { LoginResponse } from '@ucap-webmessenger/protocol-authentication';
 import { SessionStorageService } from '@ucap-webmessenger/web-storage';
@@ -30,15 +29,10 @@ import {
 import { VersionInfo2Response } from '@ucap-webmessenger/api-public';
 import { UCAP_NATIVE_SERVICE, NativeService } from '@ucap-webmessenger/native';
 import { NGXLogger } from 'ngx-logger';
-import {
-  SnackBarService,
-  AlertSnackbarComponent,
-  AlertSnackbarData
-} from '@ucap-webmessenger/ui';
 import { FileDownloadItem } from '@ucap-webmessenger/api';
 import { ModuleConfig } from '@ucap-webmessenger/api-common';
 import { _MODULE_CONFIG } from 'projects/ucap-webmessenger-api-common/src/lib/config/token';
-import { TranslateService } from '@ngx-translate/core';
+import { AppFileService } from '@app/services/file.service';
 
 export interface FileInfoTotal {
   info: FileInfo;
@@ -78,10 +72,8 @@ export class AlbumBoxComponent implements OnInit, OnDestroy {
     private store: Store<any>,
     private sessionStorageService: SessionStorageService,
     private commonApiService: CommonApiService,
-    private fileProtocolService: FileProtocolService,
-    private translateService: TranslateService,
-    private snackBarService: SnackBarService,
     @Inject(UCAP_NATIVE_SERVICE) private nativeService: NativeService,
+    private appFileService: AppFileService,
     @Inject(_MODULE_CONFIG) private moduleConfig: ModuleConfig,
     private logger: NGXLogger
   ) {
@@ -229,92 +221,16 @@ export class AlbumBoxComponent implements OnInit, OnDestroy {
   }
 
   onClickDownload(fileInfo: FileInfoTotal) {
-    this.commonApiService
-      .fileTalkDownload({
+    this.appFileService.fileTalkDownlod({
+      req: {
         userSeq: this.loginRes.userSeq,
         deviceType: this.environmentsInfo.deviceType,
         token: this.loginRes.tokenString,
         attachmentsSeq: fileInfo.info.seq,
         fileDownloadItem: fileInfo.fileDownloadItem
-      })
-      .pipe(
-        take(1),
-        map(async rawBlob => {
-          const mimeType = MimeUtil.getMimeFromExtension(
-            FileUtil.getExtension(fileInfo.info.name)
-          );
-          const blob = rawBlob.slice(0, rawBlob.size, mimeType);
-
-          FileUtil.fromBlobToBuffer(blob)
-            .then(buffer => {
-              /** download check */
-              this.fileProtocolService
-                .downCheck({
-                  seq: fileInfo.info.seq
-                })
-                .pipe(take(1))
-                .subscribe();
-
-              this.nativeService
-                .saveFile(buffer, fileInfo.info.name, mimeType)
-                .then(result => {
-                  if (!!result) {
-                    this.snackBarService.open(
-                      this.translateService.instant(
-                        'common.file.results.savedToPath',
-                        {
-                          path: result
-                        }
-                      ),
-                      '',
-                      {
-                        duration: 3000,
-                        verticalPosition: 'bottom'
-                      }
-                    );
-                  } else {
-                    this.snackBarService.openFromComponent<
-                      AlertSnackbarComponent,
-                      AlertSnackbarData
-                    >(AlertSnackbarComponent, {
-                      data: {
-                        html: this.translateService.instant(
-                          'common.file.errors.failToSave'
-                        ),
-                        buttonText: this.translateService.instant(
-                          'common.file.errors.label'
-                        )
-                      }
-                    });
-                  }
-                })
-                .catch(reason => {
-                  this.snackBarService.openFromComponent<
-                    AlertSnackbarComponent,
-                    AlertSnackbarData
-                  >(AlertSnackbarComponent, {
-                    data: {
-                      html: this.translateService.instant(
-                        'common.file.errors.failToSave'
-                      ),
-                      buttonText: this.translateService.instant(
-                        'common.file.errors.label'
-                      )
-                    }
-                  });
-                });
-            })
-            .catch(reason => {
-              this.logger.error('download', reason);
-            });
-        }),
-        finalize(() => {
-          setTimeout(() => {
-            fileInfo.fileDownloadItem.downloadingProgress$ = undefined;
-          }, 1000);
-        })
-      )
-      .subscribe();
+      },
+      fileName: fileInfo.info.name
+    });
   }
 
   onClickDownloadAll(): void {
diff --git a/projects/ucap-webmessenger-app/src/app/layouts/messenger/components/right-drawer/file-box.component.ts b/projects/ucap-webmessenger-app/src/app/layouts/messenger/components/right-drawer/file-box.component.ts
index 54ae3229..844eea06 100644
--- a/projects/ucap-webmessenger-app/src/app/layouts/messenger/components/right-drawer/file-box.component.ts
+++ b/projects/ucap-webmessenger-app/src/app/layouts/messenger/components/right-drawer/file-box.component.ts
@@ -3,16 +3,16 @@ import { MatPaginator, MatTableDataSource, MatSort } from '@angular/material';
 import {
   FileInfo,
   FileDownloadInfo,
-  FileType,
-  FileProtocolService
+  FileType
 } from '@ucap-webmessenger/protocol-file';
 import { Subscription, combineLatest } from 'rxjs';
 import { Store, select } from '@ngrx/store';
 
 import * as AppStore from '@app/store';
 import * as EventStore from '@app/store/messenger/event';
-import { tap, map, take, finalize } from 'rxjs/operators';
-import { FileUtil, MimeUtil } from '@ucap-webmessenger/core';
+
+import { tap } from 'rxjs/operators';
+import { FileUtil } from '@ucap-webmessenger/core';
 import { LoginResponse } from '@ucap-webmessenger/protocol-authentication';
 import { SessionStorageService } from '@ucap-webmessenger/web-storage';
 import { KEY_LOGIN_RES_INFO } from '@app/types/login-res-info.type';
@@ -20,16 +20,12 @@ import { NativeService, UCAP_NATIVE_SERVICE } from '@ucap-webmessenger/native';
 import { NGXLogger } from 'ngx-logger';
 import { FileDownloadItem } from '@ucap-webmessenger/api';
 import {
-  SnackBarService,
   DialogService,
   ConfirmDialogComponent,
   ConfirmDialogResult,
   ConfirmDialogData,
-  DateOptions,
-  AlertSnackbarComponent,
-  AlertSnackbarData
+  DateOptions
 } from '@ucap-webmessenger/ui';
-import { CommonApiService } from '@ucap-webmessenger/api-common';
 import { EventType } from '@ucap-webmessenger/protocol-event';
 import {
   CreateChatDialogComponent,
@@ -43,6 +39,7 @@ import {
 } from '@app/types';
 import { RoomInfo } from '@ucap-webmessenger/protocol-room';
 import { TranslateService } from '@ngx-translate/core';
+import { AppFileService } from '@app/services/file.service';
 
 export interface FileInfoTotal {
   info: FileInfo;
@@ -78,11 +75,9 @@ export class FileBoxComponent implements OnInit, OnDestroy {
   constructor(
     private store: Store<any>,
     private sessionStorageService: SessionStorageService,
-    private commonApiService: CommonApiService,
-    private fileProtocolService: FileProtocolService,
     private translateService: TranslateService,
-    private snackBarService: SnackBarService,
     @Inject(UCAP_NATIVE_SERVICE) private nativeService: NativeService,
+    private appFileService: AppFileService,
     private dialogService: DialogService,
     private logger: NGXLogger
   ) {
@@ -259,92 +254,16 @@ export class FileBoxComponent implements OnInit, OnDestroy {
   }
 
   onClickDownload(fileInfo: FileInfoTotal) {
-    this.commonApiService
-      .fileTalkDownload({
+    this.appFileService.fileTalkDownlod({
+      req: {
         userSeq: this.loginRes.userSeq,
         deviceType: this.environmentsInfo.deviceType,
         token: this.loginRes.tokenString,
         attachmentsSeq: fileInfo.info.seq,
         fileDownloadItem: fileInfo.fileDownloadItem
-      })
-      .pipe(
-        take(1),
-        map(async rawBlob => {
-          const mimeType = MimeUtil.getMimeFromExtension(
-            FileUtil.getExtension(fileInfo.info.name)
-          );
-          const blob = rawBlob.slice(0, rawBlob.size, mimeType);
-
-          FileUtil.fromBlobToBuffer(blob)
-            .then(buffer => {
-              /** download check */
-              this.fileProtocolService
-                .downCheck({
-                  seq: fileInfo.info.seq
-                })
-                .pipe(take(1))
-                .subscribe();
-
-              this.nativeService
-                .saveFile(buffer, fileInfo.info.name, mimeType)
-                .then(result => {
-                  if (!!result) {
-                    this.snackBarService.open(
-                      this.translateService.instant(
-                        'common.file.results.savedToPath',
-                        {
-                          path: result
-                        }
-                      ),
-                      '',
-                      {
-                        duration: 3000,
-                        verticalPosition: 'bottom'
-                      }
-                    );
-                  } else {
-                    this.snackBarService.openFromComponent<
-                      AlertSnackbarComponent,
-                      AlertSnackbarData
-                    >(AlertSnackbarComponent, {
-                      data: {
-                        html: this.translateService.instant(
-                          'common.file.errors.failToSave'
-                        ),
-                        buttonText: this.translateService.instant(
-                          'common.file.errors.label'
-                        )
-                      }
-                    });
-                  }
-                })
-                .catch(reason => {
-                  this.snackBarService.openFromComponent<
-                    AlertSnackbarComponent,
-                    AlertSnackbarData
-                  >(AlertSnackbarComponent, {
-                    data: {
-                      html: this.translateService.instant(
-                        'common.file.errors.failToSave'
-                      ),
-                      buttonText: this.translateService.instant(
-                        'common.file.errors.label'
-                      )
-                    }
-                  });
-                });
-            })
-            .catch(reason => {
-              this.logger.error('download', reason);
-            });
-        }),
-        finalize(() => {
-          setTimeout(() => {
-            fileInfo.fileDownloadItem.downloadingProgress$ = undefined;
-          }, 1000);
-        })
-      )
-      .subscribe();
+      },
+      fileName: fileInfo.info.name
+    });
   }
 
   onClickDownloadAll(): void {
diff --git a/projects/ucap-webmessenger-app/src/app/layouts/messenger/dialogs/chat/clipboard.dialog.component.html b/projects/ucap-webmessenger-app/src/app/layouts/messenger/dialogs/chat/clipboard.dialog.component.html
index 72850943..c62eb016 100644
--- a/projects/ucap-webmessenger-app/src/app/layouts/messenger/dialogs/chat/clipboard.dialog.component.html
+++ b/projects/ucap-webmessenger-app/src/app/layouts/messenger/dialogs/chat/clipboard.dialog.component.html
@@ -4,7 +4,7 @@
       cdkDrag
       cdkDragRootElement=".cdk-overlay-pane"
       cdkDragHandle
-      >{{ 'settings.label' | translate }}</mat-card-title
+      >{{ 'chat.sendFromClipboard' | translate }}</mat-card-title
     >
     <button class="icon-button btn-dialog-close" (click)="onClickChoice(false)">
       <i class="mdi mdi-window-close"></i>
@@ -21,7 +21,7 @@
             }}</span>
           </ng-template>
           <perfect-scrollbar>
-            <div>{{ data.content.text }}</div>
+            <div style="white-space: pre-wrap;">{{ data.content.text }}</div>
           </perfect-scrollbar>
         </mat-tab>
         <!-- <mat-tab *ngIf="data.content.rtf">
@@ -73,10 +73,10 @@
       (click)="onClickChoice(false)"
       class="mat-primary"
     >
-      {{ 'common.messages.no' | translate }}
+      {{ 'common.messages.cancel' | translate }}
     </button>
     <button mat-flat-button (click)="onClickChoice(true)" class="mat-primary">
-      {{ 'common.messages.yes' | translate }}
+      {{ 'chat.send' | translate }}
     </button>
   </mat-card-actions>
 </mat-card>
diff --git a/projects/ucap-webmessenger-app/src/app/pages/account/components/login.page.component.ts b/projects/ucap-webmessenger-app/src/app/pages/account/components/login.page.component.ts
index 1f9d2f9c..592166f0 100644
--- a/projects/ucap-webmessenger-app/src/app/pages/account/components/login.page.component.ts
+++ b/projects/ucap-webmessenger-app/src/app/pages/account/components/login.page.component.ts
@@ -146,7 +146,7 @@ export class LoginPageComponent implements OnInit, OnDestroy {
                 data: {
                   title: '',
                   html: this.translateService.instant(
-                    'accounts.errors.loginFail'
+                    'accounts.errors.loginFailedIdPw'
                   )
                 }
               });
diff --git a/projects/ucap-webmessenger-app/src/app/resolvers/messenger.resolver.ts b/projects/ucap-webmessenger-app/src/app/resolvers/messenger.resolver.ts
index 81674ec1..a50999ec 100644
--- a/projects/ucap-webmessenger-app/src/app/resolvers/messenger.resolver.ts
+++ b/projects/ucap-webmessenger-app/src/app/resolvers/messenger.resolver.ts
@@ -41,7 +41,6 @@ import {
   LoginResponse
 } from '@ucap-webmessenger/protocol-authentication';
 
-import * as AuthenticationStore from '@app/store/account/authentication';
 import { NGXLogger } from 'ngx-logger';
 import {
   QueryProtocolService,
@@ -52,6 +51,7 @@ import { OptionProtocolService } from '@ucap-webmessenger/protocol-option';
 import { TranslateService as UCapTranslateService } from '@ucap-webmessenger/ui';
 
 import * as AppStore from '@app/store';
+import * as AuthenticationStore from '@app/store/account/authentication';
 import * as CompanyStore from '@app/store/setting/company';
 import * as VersionInfoStore from '@app/store/setting/version-info';
 import * as OptionStore from '@app/store/messenger/option';
@@ -72,6 +72,7 @@ import {
 import { StatusCode } from '@ucap-webmessenger/api';
 import { UCAP_NATIVE_SERVICE, NativeService } from '@ucap-webmessenger/native';
 import { AppUserInfo, KEY_APP_USER_INFO } from '@app/types/app-user-info.type';
+import { TranslateService } from '@ngx-translate/core';
 
 @Injectable()
 export class AppMessengerResolver implements Resolve<void> {
@@ -89,6 +90,7 @@ export class AppMessengerResolver implements Resolve<void> {
     private innerProtocolService: InnerProtocolService,
     private appNativeService: AppNativeService,
     private snackBarService: SnackBarService,
+    private translateService: TranslateService,
     private logger: NGXLogger
   ) {}
 
@@ -185,6 +187,7 @@ export class AppMessengerResolver implements Resolve<void> {
               })
               .pipe(
                 catchError(err => {
+                  this.logger.error('ServerErrorCode', err);
                   switch (err as ServerErrorCode) {
                     case ServerErrorCode.ERRCD_IDPW:
                       break;
@@ -285,6 +288,17 @@ export class AppMessengerResolver implements Resolve<void> {
             resolve();
           },
           err => {
+            this.snackBarService.open(
+              this.translateService.instant('accounts.errors.loginFailed'),
+              '',
+              {
+                duration: 3000,
+                verticalPosition: 'bottom',
+                horizontalPosition: 'center'
+              }
+            );
+
+            this.store.dispatch(AuthenticationStore.loginRedirect());
             reject(err);
           }
         );
diff --git a/projects/ucap-webmessenger-app/src/app/services/app.service.ts b/projects/ucap-webmessenger-app/src/app/services/app.service.ts
index 10f1dbf2..3b62e016 100644
--- a/projects/ucap-webmessenger-app/src/app/services/app.service.ts
+++ b/projects/ucap-webmessenger-app/src/app/services/app.service.ts
@@ -9,7 +9,9 @@ import { TranslateService as UCapTranslateService } from '@ucap-webmessenger/ui'
 import { DateService as UCapDateService } from '@ucap-webmessenger/ui';
 import { TranslateService } from '@ngx-translate/core';
 import { EnviromentsService } from '@ucap-webmessenger/enviroments';
-import { NGXLogger } from 'ngx-logger';
+import { NGXLogger, NgxLoggerLevel } from 'ngx-logger';
+
+import { environment } from '../../environments/environment';
 
 @Injectable()
 export class AppService {
@@ -33,6 +35,10 @@ export class AppService {
     this.ucapDateService.setDefaultTimezone('Asia/Seoul');
     this.ucapDateService.use('Asia/Seoul');
     this.ucapDateService.setLocale(this.translateService.currentLang);
+
+    this.logger.updateConfig({
+      level: environment.production ? NgxLoggerLevel.WARN : NgxLoggerLevel.DEBUG
+    });
   }
 
   public postInit(): Promise<any> {
diff --git a/projects/ucap-webmessenger-app/src/app/services/file.service.ts b/projects/ucap-webmessenger-app/src/app/services/file.service.ts
new file mode 100644
index 00000000..febcdf0c
--- /dev/null
+++ b/projects/ucap-webmessenger-app/src/app/services/file.service.ts
@@ -0,0 +1,129 @@
+import { Injectable, Inject, NgZone } from '@angular/core';
+import {
+  FileTalkDownloadRequest,
+  CommonApiService
+} from '@ucap-webmessenger/api-common';
+import { map, take, finalize, catchError } from 'rxjs/operators';
+import { MimeUtil, FileUtil } from '@ucap-webmessenger/core';
+import { FileProtocolService } from '@ucap-webmessenger/protocol-file';
+import { UCAP_NATIVE_SERVICE, NativeService } from '@ucap-webmessenger/native';
+import {
+  SnackBarService,
+  AlertSnackbarComponent,
+  AlertSnackbarData
+} from '@ucap-webmessenger/ui';
+import { TranslateService } from '@ngx-translate/core';
+import { NGXLogger } from 'ngx-logger';
+import { of } from 'rxjs';
+
+@Injectable({
+  providedIn: 'root'
+})
+export class AppFileService {
+  constructor(
+    private commonApiService: CommonApiService,
+    private fileProtocolService: FileProtocolService,
+    @Inject(UCAP_NATIVE_SERVICE) private nativeService: NativeService,
+    private snackBarService: SnackBarService,
+    private translateService: TranslateService,
+    private ngZone: NgZone,
+    private logger: NGXLogger
+  ) {}
+
+  fileTalkDownlod(param: {
+    req: FileTalkDownloadRequest;
+    fileName: string;
+    fileDownloadUrl?: string;
+    savePath?: string;
+  }) {
+    const req = param.req;
+    const fileName = param.fileName;
+    const fileDownloadItem = req.fileDownloadItem;
+    const fileDownloadUrl = param.fileDownloadUrl;
+    const savePath = param.savePath;
+
+    const fileTalkDownloadError = (reason: any) => {
+      this.logger.warn(reason);
+      this.snackBarService.openFromComponent<
+        AlertSnackbarComponent,
+        AlertSnackbarData
+      >(AlertSnackbarComponent, {
+        data: {
+          html: this.translateService.instant('common.file.errors.failToSave'),
+          buttonText: this.translateService.instant('common.file.errors.label')
+        }
+      });
+    };
+
+    this.commonApiService
+      .fileTalkDownload(req, fileDownloadUrl)
+      .pipe(
+        take(1),
+        map(rawBlob => {
+          const mimeType = MimeUtil.getMimeFromExtension(
+            FileUtil.getExtension(fileName)
+          );
+          const blob = rawBlob.slice(0, rawBlob.size, mimeType);
+          FileUtil.fromBlobToBuffer(blob)
+            .then(buffer => {
+              /** download check */
+              this.fileProtocolService
+                .downCheck({
+                  seq: req.attachmentsSeq
+                })
+                .pipe(take(1))
+                .subscribe();
+
+              this.nativeService
+                .saveFile(buffer, fileName, mimeType, savePath)
+                .then(filePath => {
+                  if (!!filePath) {
+                    const snackBarRef = this.snackBarService.open(
+                      this.translateService.instant(
+                        'common.file.results.savedToPath',
+                        {
+                          path: filePath
+                        }
+                      ),
+                      this.translateService.instant('common.file.open'),
+                      {
+                        duration: 3000,
+                        verticalPosition: 'bottom',
+                        horizontalPosition: 'center'
+                      }
+                    );
+
+                    snackBarRef.onAction().subscribe(() => {
+                      snackBarRef.dismiss();
+                      this.ngZone.runOutsideAngular(() => {
+                        this.nativeService
+                          .openTargetItem(filePath)
+                          .catch(reason => {
+                            this.logger.warn(reason);
+                          });
+                      });
+                    });
+                  } else {
+                    fileTalkDownloadError('fail');
+                  }
+                })
+                .catch(reason => {
+                  fileTalkDownloadError(reason);
+                });
+            })
+            .catch(reason => {
+              fileTalkDownloadError(reason);
+            });
+        }),
+        finalize(() => {
+          if (!!fileDownloadItem) {
+            setTimeout(() => {
+              fileDownloadItem.downloadingProgress$ = undefined;
+            }, 1000);
+          }
+        }),
+        catchError(error => of(error))
+      )
+      .subscribe();
+  }
+}
diff --git a/projects/ucap-webmessenger-app/src/app/services/index.ts b/projects/ucap-webmessenger-app/src/app/services/index.ts
index 699b607c..fc7e460b 100644
--- a/projects/ucap-webmessenger-app/src/app/services/index.ts
+++ b/projects/ucap-webmessenger-app/src/app/services/index.ts
@@ -3,11 +3,13 @@ import { AppAuthenticationService } from './authentication.service';
 import { AppLoaderService } from './loader.service';
 import { AppNotificationService } from './notification.service';
 import { AppNativeService } from './native.service';
+import { AppFileService } from './file.service';
 
 export const SERVICES = [
   AppService,
   AppAuthenticationService,
   AppLoaderService,
   AppNotificationService,
-  AppNativeService
+  AppNativeService,
+  AppFileService
 ];
diff --git a/projects/ucap-webmessenger-app/src/app/store/messenger/chat/actions.ts b/projects/ucap-webmessenger-app/src/app/store/messenger/chat/actions.ts
index b4f100f2..ac7f6f1a 100644
--- a/projects/ucap-webmessenger-app/src/app/store/messenger/chat/actions.ts
+++ b/projects/ucap-webmessenger-app/src/app/store/messenger/chat/actions.ts
@@ -1,10 +1,16 @@
 import { createAction, props } from '@ngrx/store';
-import { Info, EventJson } from '@ucap-webmessenger/protocol-event';
+import {
+  Info,
+  EventJson,
+  FileEventJson
+} from '@ucap-webmessenger/protocol-event';
 import {
   MassTalkDownloadRequest,
-  MassTalkDownloadResponse
+  MassTalkDownloadResponse,
+  FileTalkDownloadRequest
 } from '@ucap-webmessenger/api-common';
 import { RightDrawer } from '@app/types';
+import { FileDownloadItem } from '@ucap-webmessenger/api';
 
 export const selectedRoom = createAction(
   '[Messenger::Chat] selectedRoom',
diff --git a/projects/ucap-webmessenger-app/src/assets/i18n/en.json b/projects/ucap-webmessenger-app/src/assets/i18n/en.json
index b75a81f2..fd89a055 100644
--- a/projects/ucap-webmessenger-app/src/assets/i18n/en.json
+++ b/projects/ucap-webmessenger-app/src/assets/i18n/en.json
@@ -43,7 +43,8 @@
       "notSatisfiedCombineForPassword": "Combination of two or more kinds of letters, numbers and special characters.",
       "minLengthCombineForPassword": "Password must be {{lengthOfPassword}} characters if {{countOfCombine}} combination.",
       "failToChangePassword": "Failed to change password.",
-      "loginFail": "Username or password do not match.",
+      "loginFailed": "Failed to login",
+      "loginFailedIdPw": "Username or password do not match.",
       "loginFailOverTry": "Password error count exceeded. <br/> Check your password <br/> Please try again later."
     }
   },
@@ -183,6 +184,7 @@
     "label": "Chat",
     "room": "Chat room",
     "send": "Send",
+    "sendFromClipboard": "Send from clipboard",
     "searchRoomByName": "Search by room name",
     "searchEventByText": "Search by chat",
     "searchEventByTextEnd": "Complate Search by chat",
diff --git a/projects/ucap-webmessenger-app/src/assets/i18n/ko.json b/projects/ucap-webmessenger-app/src/assets/i18n/ko.json
index 7a6a87a7..7a39ac99 100644
--- a/projects/ucap-webmessenger-app/src/assets/i18n/ko.json
+++ b/projects/ucap-webmessenger-app/src/assets/i18n/ko.json
@@ -43,7 +43,8 @@
       "notSatisfiedCombineForPassword": "문자, 숫자, 특수문자 중 2종류 이상 조합을 해야 합니다",
       "minLengthCombineForPassword": "비밀번호는 {{countOfCombine}}가지가 조합된 경우 {{lengthOfPassword}}자를 넘어야 합니다",
       "failToChangePassword": "비밀번호 변경에 실패하였습니다.",
-      "loginFail": "아이디 또는 패스워드가<br/>일치하지 않습니다.",
+      "loginFailed": "로그인에 실패하였습니다.",
+      "loginFailedIdPw": "아이디 또는 패스워드가<br/>일치하지 않습니다.",
       "loginFailOverTry": "비밀번호 오류 횟수 초과입니다.<br/>비밀번호를 확인하신 후<br/>잠시 후 다시 시작해 주세요."
     }
   },
@@ -183,6 +184,7 @@
     "label": "대화",
     "room": "대화방",
     "send": "보내기",
+    "sendFromClipboard": "클립보드 전송",
     "searchRoomByName": "대화방 이름 검색",
     "searchEventByText": "대화 내용 검색",
     "searchEventByTextEnd": "대화 검색을 마쳤습니다.",
diff --git a/projects/ucap-webmessenger-ui-chat/src/lib/components/form.component.html b/projects/ucap-webmessenger-ui-chat/src/lib/components/form.component.html
index 4cb45715..c3a9ca13 100644
--- a/projects/ucap-webmessenger-ui-chat/src/lib/components/form.component.html
+++ b/projects/ucap-webmessenger-ui-chat/src/lib/components/form.component.html
@@ -87,7 +87,6 @@
   </div>
 
   <form
-    #replyForm="ngForm"
     (ngSubmit)="onSend($event)"
     (keydown.enter)="onSend($event)"
     fxFlex
diff --git a/projects/ucap-webmessenger-ui-chat/src/lib/components/form.component.ts b/projects/ucap-webmessenger-ui-chat/src/lib/components/form.component.ts
index 56914f19..d5a551e6 100644
--- a/projects/ucap-webmessenger-ui-chat/src/lib/components/form.component.ts
+++ b/projects/ucap-webmessenger-ui-chat/src/lib/components/form.component.ts
@@ -37,9 +37,6 @@ export class FormComponent implements OnInit {
   @Output()
   clipboardPaste = new EventEmitter<ClipboardEvent>();
 
-  @ViewChild('replyForm', { static: false })
-  replyForm: NgForm;
-
   @ViewChild('replyInput', { static: false })
   replyInput: ElementRef<HTMLTextAreaElement>;
 
@@ -57,8 +54,8 @@ export class FormComponent implements OnInit {
   onSend(event: Event) {
     event.preventDefault();
 
-    this.send.emit(this.replyForm.form.value.message);
-    this.replyForm.reset();
+    this.send.emit(this.replyInput.nativeElement.value);
+    this.replyInput.nativeElement.value = '';
   }
 
   onClickFileInput() {
diff --git a/projects/ucap-webmessenger-ui/src/lib/components/file-viewer/image-viewer.component.ts b/projects/ucap-webmessenger-ui/src/lib/components/file-viewer/image-viewer.component.ts
index 2ab1e41c..be3ab5ce 100644
--- a/projects/ucap-webmessenger-ui/src/lib/components/file-viewer/image-viewer.component.ts
+++ b/projects/ucap-webmessenger-ui/src/lib/components/file-viewer/image-viewer.component.ts
@@ -4,8 +4,8 @@ import {
   Input,
   Output,
   EventEmitter,
-  ElementRef,
-  ViewChild
+  ChangeDetectorRef,
+  ChangeDetectionStrategy
 } from '@angular/core';
 import { ucapAnimations } from '../../animations';
 import { FileEventJson } from '@ucap-webmessenger/protocol-event';
@@ -15,7 +15,8 @@ import { FileDownloadItem } from '@ucap-webmessenger/api';
   selector: 'ucap-image-viewer',
   templateUrl: './image-viewer.component.html',
   styleUrls: ['./image-viewer.component.scss'],
-  animations: ucapAnimations
+  animations: ucapAnimations,
+  changeDetection: ChangeDetectionStrategy.OnPush
 })
 export class ImageViewerComponent implements OnInit {
   @Input()
@@ -37,7 +38,7 @@ export class ImageViewerComponent implements OnInit {
 
   zoomRatio = 100;
 
-  constructor() {}
+  constructor(private changeDetectorRef: ChangeDetectorRef) {}
 
   ngOnInit() {
     this.naturalWidth = this.fileInfo.imageWidth;
@@ -54,9 +55,10 @@ export class ImageViewerComponent implements OnInit {
   }
 
   onLoadFileDownloadUrl(img: HTMLImageElement) {
-    console.log('onLoadFileDownloadUrl', img.naturalWidth, img.naturalHeight);
     this.naturalWidth = img.naturalWidth;
     this.naturalHeight = img.naturalHeight;
+
+    this.changeDetectorRef.detectChanges();
   }
 
   onClickZoomOut() {
@@ -64,14 +66,20 @@ export class ImageViewerComponent implements OnInit {
       return;
     }
     this.zoomRatio -= 10;
+
+    this.changeDetectorRef.detectChanges();
   }
   onClickZoomIn() {
     if (180 <= this.zoomRatio) {
       return;
     }
     this.zoomRatio += 10;
+
+    this.changeDetectorRef.detectChanges();
   }
   onClickZoomReset() {
     this.zoomRatio = 100;
+
+    this.changeDetectorRef.detectChanges();
   }
 }