diff --git a/QuickLook.Plugin/QuickLook.Plugin.TextViewer/TextViewerPanel.xaml.cs b/QuickLook.Plugin/QuickLook.Plugin.TextViewer/TextViewerPanel.xaml.cs
index d01f399..1c1607d 100644
--- a/QuickLook.Plugin/QuickLook.Plugin.TextViewer/TextViewerPanel.xaml.cs
+++ b/QuickLook.Plugin/QuickLook.Plugin.TextViewer/TextViewerPanel.xaml.cs
@@ -16,7 +16,6 @@
 // along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 using System.IO;
-using System.Reflection;
 using System.Text;
 using System.Windows.Controls;
 using System.Windows.Media;
@@ -35,9 +34,7 @@ namespace QuickLook.Plugin.TextViewer
             InitializeComponent();
 
             viewer.FontFamily =
-                new FontFamily(context.GetString(
-                    Path.Combine(Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location), @"Translations.config"),
-                    "Editor_FontFamily", failsafe: "Consolas"));
+                new FontFamily(context.GetString("Editor_FontFamily", failsafe: "Consolas"));
 
             LoadFile(path);
         }
diff --git a/QuickLook/App.xaml.cs b/QuickLook/App.xaml.cs
index 433aeeb..2931365 100644
--- a/QuickLook/App.xaml.cs
+++ b/QuickLook/App.xaml.cs
@@ -36,8 +36,6 @@ namespace QuickLook
         public static readonly string AppFullPath = Assembly.GetExecutingAssembly().Location;
         public static readonly string AppPath = Path.GetDirectoryName(AppFullPath);
 
-        internal static readonly string Translations = Path.Combine(AppPath, @"Translations.config");
-
         private bool _isFirstInstance;
         private Mutex _isRunning;
 
@@ -64,7 +62,7 @@ namespace QuickLook
                     RemoteCallShowPreview(e);
                 // second instance: duplicate
                 else
-                    MessageBox.Show(TranslationHelper.GetString(Translations, "APP_SECOND"));
+                    MessageBox.Show(TranslationHelper.GetString("APP_SECOND"));
 
                 Shutdown();
                 return;
@@ -87,7 +85,7 @@ namespace QuickLook
             TrayIconManager.GetInstance();
             if (!e.Args.Contains("/autorun") && !IsUWP)
                 TrayIconManager.GetInstance()
-                    .ShowNotification("", TranslationHelper.GetString(Translations, "APP_START"));
+                    .ShowNotification("", TranslationHelper.GetString("APP_START"));
             if (e.Args.Contains("/first"))
                 AutoStartupHelper.CreateAutorunShortcut();
 
diff --git a/QuickLook/Helpers/TranslationHelper.cs b/QuickLook/Helpers/TranslationHelper.cs
index f5e97a2..3fbb457 100644
--- a/QuickLook/Helpers/TranslationHelper.cs
+++ b/QuickLook/Helpers/TranslationHelper.cs
@@ -1,6 +1,8 @@
 using System.Collections.Generic;
 using System.Globalization;
 using System.IO;
+using System.Reflection;
+using System.Runtime.CompilerServices;
 using System.Xml.XPath;
 
 namespace QuickLook.Helpers
@@ -13,8 +15,14 @@ namespace QuickLook.Helpers
         private static readonly Dictionary<string, XPathNavigator> FileCache = new Dictionary<string, XPathNavigator>();
         private static readonly Dictionary<string, string> StringCache = new Dictionary<string, string>();
 
-        public static string GetString(string file, string id, CultureInfo locale = null, string failsafe = null)
+        [MethodImpl(MethodImplOptions.NoInlining)]
+        public static string GetString(string id, string file = null, CultureInfo locale = null, string failsafe = null,
+            Assembly calling = null)
         {
+            if (file == null)
+                file = Path.Combine(Path.GetDirectoryName((calling ?? Assembly.GetCallingAssembly()).Location),
+                    "Translations.config");
+
             if (!File.Exists(file))
                 return failsafe ?? id;
 
@@ -44,7 +52,7 @@ namespace QuickLook.Helpers
 
         private static string GetStringFromXml(XPathNavigator nav, string id, CultureInfo locale)
         {
-            var cacheKey = $"{locale.Name}::{id}";
+            var cacheKey = $"{nav.BaseURI.GetHashCode()}::{locale.Name}::{id}";
             if (StringCache.ContainsKey(cacheKey))
                 return StringCache[cacheKey];
 
diff --git a/QuickLook/Helpers/Updater.cs b/QuickLook/Helpers/Updater.cs
index 9eeae7a..b49dfe0 100644
--- a/QuickLook/Helpers/Updater.cs
+++ b/QuickLook/Helpers/Updater.cs
@@ -53,7 +53,7 @@ namespace QuickLook.Helpers
                         if (!silent)
                             Application.Current.Dispatcher.Invoke(
                                 () => TrayIconManager.GetInstance().ShowNotification("",
-                                    TranslationHelper.GetString(App.Translations, "Update_NoUpdate")));
+                                    TranslationHelper.GetString("Update_NoUpdate")));
                         return;
                     }
 
@@ -67,7 +67,7 @@ namespace QuickLook.Helpers
                         {
                             ViewWindowManager.GetInstance().InvokeViewer(changeLogPath);
                             TrayIconManager.GetInstance().ShowNotification("",
-                                string.Format(TranslationHelper.GetString(App.Translations, "Update_Found"), nVersion),
+                                string.Format(TranslationHelper.GetString("Update_Found"), nVersion),
                                 clickEvent: () => Process.Start(
                                     @"https://github.com/xupefei/QuickLook/releases/latest"));
                         });
@@ -77,7 +77,7 @@ namespace QuickLook.Helpers
                     Debug.WriteLine(e.Message);
                     Application.Current.Dispatcher.Invoke(
                         () => TrayIconManager.GetInstance().ShowNotification("",
-                            string.Format(TranslationHelper.GetString(App.Translations, "Update_Error"), e.Message)));
+                            string.Format(TranslationHelper.GetString("Update_Error"), e.Message)));
                 }
             });
         }
diff --git a/QuickLook/MainWindowTransparent.xaml.cs b/QuickLook/MainWindowTransparent.xaml.cs
index 0a25322..d8827a0 100644
--- a/QuickLook/MainWindowTransparent.xaml.cs
+++ b/QuickLook/MainWindowTransparent.xaml.cs
@@ -42,7 +42,7 @@ namespace QuickLook
             InitializeComponent();
 
             FontFamily =
-                new FontFamily(TranslationHelper.GetString(App.Translations, "UI_FontFamily", failsafe: "Segoe UI"));
+                new FontFamily(TranslationHelper.GetString("UI_FontFamily", failsafe: "Segoe UI"));
 
             SourceInitialized += (sender, e) =>
             {
@@ -181,13 +181,13 @@ namespace QuickLook
 
             buttonOpenWith.Content = isExe == null
                 ? Directory.Exists(PreviewPath)
-                    ? string.Format(TranslationHelper.GetString(App.Translations, "MW_BrowseFolder"),
+                    ? string.Format(TranslationHelper.GetString("MW_BrowseFolder"),
                         Path.GetFileName(PreviewPath))
-                    : string.Format(TranslationHelper.GetString(App.Translations, "MW_Open"),
+                    : string.Format(TranslationHelper.GetString("MW_Open"),
                         Path.GetFileName(PreviewPath))
                 : isExe == true
-                    ? string.Format(TranslationHelper.GetString(App.Translations, "MW_Run"), appFriendlyName)
-                    : string.Format(TranslationHelper.GetString(App.Translations, "MW_OpenWith"), appFriendlyName);
+                    ? string.Format(TranslationHelper.GetString("MW_Run"), appFriendlyName)
+                    : string.Format(TranslationHelper.GetString("MW_OpenWith"), appFriendlyName);
         }
 
         internal void BeginHide()
diff --git a/QuickLook/Plugin/ContextObject.cs b/QuickLook/Plugin/ContextObject.cs
index c44cbd5..77d00a1 100644
--- a/QuickLook/Plugin/ContextObject.cs
+++ b/QuickLook/Plugin/ContextObject.cs
@@ -18,6 +18,7 @@
 using System;
 using System.ComponentModel;
 using System.Globalization;
+using System.Reflection;
 using System.Runtime.CompilerServices;
 using System.Windows;
 using QuickLook.Annotations;
@@ -130,9 +131,10 @@ namespace QuickLook.Plugin
         /// <summary>
         ///     Get a string from translation Xml document.
         /// </summary>
-        public string GetString(string file, string id, CultureInfo locale = null, string failsafe = null)
+        [MethodImpl(MethodImplOptions.NoInlining)]
+        public string GetString(string id, string file = null, CultureInfo locale = null, string failsafe = null)
         {
-            return TranslationHelper.GetString(file, id, locale, failsafe);
+            return TranslationHelper.GetString(id, file, locale, failsafe, Assembly.GetCallingAssembly());
         }
 
         /// <summary>
diff --git a/QuickLook/Plugin/InfoPanel/InfoPanel.xaml.cs b/QuickLook/Plugin/InfoPanel/InfoPanel.xaml.cs
index 1b0c087..25a2793 100644
--- a/QuickLook/Plugin/InfoPanel/InfoPanel.xaml.cs
+++ b/QuickLook/Plugin/InfoPanel/InfoPanel.xaml.cs
@@ -62,7 +62,7 @@ namespace QuickLook.Plugin.InfoPanel
             filename.Text = string.IsNullOrEmpty(name) ? path : name;
 
             var last = File.GetLastWriteTime(path);
-            modDate.Text = string.Format(TranslationHelper.GetString(App.Translations, "InfoPanel_LastModified"),
+            modDate.Text = string.Format(TranslationHelper.GetString("InfoPanel_LastModified"),
                 last.ToString(CultureInfo.CurrentCulture));
 
             Stop = false;
@@ -85,7 +85,7 @@ namespace QuickLook.Plugin.InfoPanel
                     Dispatcher.Invoke(() =>
                     {
                         totalSize.Text =
-                            string.Format(TranslationHelper.GetString(App.Translations, "InfoPanel_DriveSize"),
+                            string.Format(TranslationHelper.GetString("InfoPanel_DriveSize"),
                                 totalSpace.ToPrettySize(2),
                                 totalFreeSpace.ToPrettySize(2));
                     });
@@ -101,15 +101,15 @@ namespace QuickLook.Plugin.InfoPanel
                             string t;
                             var d = totalDirsL != 0
                                 ? string.Format(
-                                    TranslationHelper.GetString(App.Translations, "InfoPanel_Folders"), totalDirsL)
+                                    TranslationHelper.GetString("InfoPanel_Folders"), totalDirsL)
                                 : string.Empty;
                             var f = totalFilesL != 0
                                 ? string.Format(
-                                    TranslationHelper.GetString(App.Translations, "InfoPanel_Files"), totalFilesL)
+                                    TranslationHelper.GetString("InfoPanel_Files"), totalFilesL)
                                 : string.Empty;
                             if (!string.IsNullOrEmpty(d) && !string.IsNullOrEmpty(f))
                                 t = string.Format(
-                                    TranslationHelper.GetString(App.Translations, "InfoPanel_FolderAndFile"), d, f);
+                                    TranslationHelper.GetString("InfoPanel_FolderAndFile"), d, f);
                             else if (string.IsNullOrEmpty(d) && string.IsNullOrEmpty(f))
                                 t = string.Empty;
                             else
diff --git a/QuickLook/TrayIconManager.cs b/QuickLook/TrayIconManager.cs
index 4321b5d..3099f7d 100644
--- a/QuickLook/TrayIconManager.cs
+++ b/QuickLook/TrayIconManager.cs
@@ -29,7 +29,7 @@ namespace QuickLook
         private readonly NotifyIcon _icon;
 
         private readonly MenuItem _itemAutorun =
-            new MenuItem(TranslationHelper.GetString(App.Translations, "Icon_RunAtStartup"),
+            new MenuItem(TranslationHelper.GetString("Icon_RunAtStartup"),
                 (sender, e) =>
                 {
                     if (AutoStartupHelper.IsAutorun())
@@ -42,7 +42,7 @@ namespace QuickLook
         {
             _icon = new NotifyIcon
             {
-                Text = string.Format(TranslationHelper.GetString(App.Translations, "Icon_ToolTip"),
+                Text = string.Format(TranslationHelper.GetString("Icon_ToolTip"),
                     Application.ProductVersion),
                 Icon = Resources.app,
                 Visible = true,
@@ -50,10 +50,10 @@ namespace QuickLook
                 {
                     new MenuItem($"v{Application.ProductVersion}") {Enabled = false},
                     new MenuItem("-"),
-                    new MenuItem(TranslationHelper.GetString(App.Translations, "Icon_CheckUpdate"),
+                    new MenuItem(TranslationHelper.GetString("Icon_CheckUpdate"),
                         (sender, e) => Updater.CheckForUpdates()) {Enabled = !App.IsUWP},
                     _itemAutorun,
-                    new MenuItem(TranslationHelper.GetString(App.Translations, "Icon_Quit"),
+                    new MenuItem(TranslationHelper.GetString("Icon_Quit"),
                         (sender, e) => System.Windows.Application.Current.Shutdown())
                 })
             };