diff --git a/src/app/app.component.ts b/src/app/app.component.ts
index a2cd933..2476aa3 100644
--- a/src/app/app.component.ts
+++ b/src/app/app.component.ts
@@ -1,7 +1,9 @@
 import { Component, OnInit, ViewChild } from '@angular/core';
 import { NWUIButtonComponent } from '@nwaifu-ui';
 import { TextListComponent } from './components/text_list/text_list.component';
-import { TranslateData } from './dto/translate_data.dto';
+import { LocalStorageKeys } from './consts';
+import { NpsFile, TranslateData } from './dto/translate_data.dto';
+import { saveOriginalFile } from './lib/file_tools';
 import { parse } from './lib/parser';
 @Component({
   standalone: true,
@@ -16,14 +18,14 @@ export class AppComponent implements OnInit {
   @ViewChild('fileInput') fileInput: HTMLInputElement | null = null;
 
   ngOnInit(): void {
-    const data = localStorage.getItem('translations');
+    const data = localStorage.getItem(LocalStorageKeys.TRANSLATIONS);
     if (data) {
       try {
         this.elements = JSON.parse(data);
       } catch (e) {
         console.error(e);
         alert('Error while loading');
-        localStorage.removeItem('translations');
+        localStorage.removeItem(LocalStorageKeys.TRANSLATIONS);
         this.elements = [];
       }
     }
@@ -38,6 +40,11 @@ export class AppComponent implements OnInit {
         reader.onload = () => {
           if (reader.result) {
             this.onFileLoaded(reader.result.toString());
+            const original_file: NpsFile = {
+              file_name: file.name,
+              original_text: reader.result.toString(),
+            };
+            saveOriginalFile(original_file);
             target.value = '';
           }
         };
@@ -53,6 +60,6 @@ export class AppComponent implements OnInit {
 
   onClearClicked() {
     this.elements = [];
-    localStorage.removeItem('translations');
+    localStorage.removeItem(LocalStorageKeys.TRANSLATIONS);
   }
 }
diff --git a/src/app/components/translate_block/translate_block.component.ts b/src/app/components/translate_block/translate_block.component.ts
index f322cfe..002449a 100644
--- a/src/app/components/translate_block/translate_block.component.ts
+++ b/src/app/components/translate_block/translate_block.component.ts
@@ -1,6 +1,7 @@
 import { CommonModule } from '@angular/common';
 import { Component, ElementRef, Input, OnInit, ViewChild } from '@angular/core';
 import { NWUIButtonComponent, NWUITextAreaComponent } from '@nwaifu-ui';
+import { LocalStorageKeys } from 'src/app/consts';
 import { TranslateData } from '../../dto/translate_data.dto';
 import { ETranslateService } from '../../services/translate.enums';
 import { TranslateService } from '../../services/translate.service';
@@ -21,7 +22,7 @@ export class TranslateBlockComponent implements OnInit {
   isEditing = false;
 
   saveChanges() {
-    const data: TranslateData[] = JSON.parse(localStorage.getItem('translations') ?? '[]');
+    const data: TranslateData[] = JSON.parse(localStorage.getItem(LocalStorageKeys.TRANSLATIONS) ?? '[]');
     if (!data.length) {
       alert('No data');
       return;
diff --git a/src/app/consts.ts b/src/app/consts.ts
new file mode 100644
index 0000000..c55e089
--- /dev/null
+++ b/src/app/consts.ts
@@ -0,0 +1,4 @@
+export enum LocalStorageKeys {
+  TRANSLATIONS = 'translations',
+  ORIGINAL_FILE = 'original_file',
+}
diff --git a/src/app/dto/translate_data.dto.ts b/src/app/dto/translate_data.dto.ts
index 588f7cb..9e4ed71 100644
--- a/src/app/dto/translate_data.dto.ts
+++ b/src/app/dto/translate_data.dto.ts
@@ -2,3 +2,8 @@ export interface TranslateData {
   english_text: string;
   translated_text: string;
 }
+export interface NpsFile {
+  file_name: string;
+  original_text: string;
+  translated_text?: string;
+}
diff --git a/src/app/lib/file_tools.ts b/src/app/lib/file_tools.ts
new file mode 100644
index 0000000..7e3c721
--- /dev/null
+++ b/src/app/lib/file_tools.ts
@@ -0,0 +1,6 @@
+import { LocalStorageKeys } from '../consts';
+import { NpsFile } from '../dto/translate_data.dto';
+
+export function saveOriginalFile(file: NpsFile) {
+  localStorage.setItem(LocalStorageKeys.ORIGINAL_FILE, JSON.stringify(file));
+}