diff --git a/package.json b/package.json
index 7cd94bf..dc8f1b2 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "my-weekly-todo-list",
-  "version": "1.93.0",
+  "version": "1.93.1",
   "description": "A web-based weekly task management application that organizes to-dos and calendar events in a single, intuitive weekly view",
   "main": "index.js",
   "scripts": {
diff --git a/src/components/WeeklyView.tsx b/src/components/WeeklyView.tsx
index 29e8950..5bc8fdd 100644
--- a/src/components/WeeklyView.tsx
+++ b/src/components/WeeklyView.tsx
@@ -110,7 +110,7 @@ const RichTextEditor = dynamic(() => import("./RichTextEditor"), { ssr: false })
 const PriorityView = dynamic(() => import("./PriorityView"), { ssr: false });
 
 // Cookie helpers for per-device settings
-const DEVICE_SETTINGS_KEYS = ["viewDays", "cellDuration", "startHour", "endHour"];
+const DEVICE_SETTINGS_KEYS = ["viewDays", "cellDuration", "startHour", "endHour", "fontSize"];
 
 function getCookie(name: string): string | null {
     if (typeof document === "undefined") return null;
@@ -1155,7 +1155,10 @@ export default function WeeklyView() {
     const [showProjectsSidebar, setShowProjectsSidebar] = useState(false);
 
     const [focusTimerDuration, setFocusTimerDuration] = useState(25);
-    const [fontSize, setFontSize] = useState<"S" | "M" | "L">("M");
+    const [fontSize, setFontSize] = useState<"S" | "M" | "L">(() => {
+        const c = getCookie("setting_fontSize");
+        return (c as "S" | "M" | "L") || "M";
+    });
     const [headlineFont, setHeadlineFont] = useState("Inter");
     const [headlineFontSize, setHeadlineFontSize] = useState("1.25rem");
     const [headlineFontWeight, setHeadlineFontWeight] = useState("900");
@@ -2346,6 +2349,8 @@ export default function WeeklyView() {
                     if (cookieStartHour) setStartHour(Number(cookieStartHour));
                     const cookieEndHour = getCookie("setting_endHour");
                     if (cookieEndHour) setEndHour(Number(cookieEndHour));
+                    const cookieFontSize = getCookie("setting_fontSize");
+                    if (cookieFontSize) setFontSize(cookieFontSize as "S" | "M" | "L");
                     setShowNextTask(data.user.showNextTask || false);
                     setCalendarEditMode(data.user.calendarEditMode || false);
                     if (data.user.fontSize)