diff --git a/web/src/beta/components/Resizable/hooks.ts b/web/src/beta/components/Resizable/hooks.ts
index 258edad9b..d257b4bdb 100644
--- a/web/src/beta/components/Resizable/hooks.ts
+++ b/web/src/beta/components/Resizable/hooks.ts
@@ -1,7 +1,7 @@
 import React, { useCallback, useState, useEffect, useMemo } from "react";
 
-type Direction = "vertical" | "horizontal";
-type Gutter = "start" | "end";
+export type Direction = "vertical" | "horizontal";
+export type Gutter = "start" | "end";
 
 const getPositionFromEvent = (e: React.MouseEvent | React.TouchEvent) => {
   const { nativeEvent } = e;
@@ -18,7 +18,6 @@ const getPositionFromEvent = (e: React.MouseEvent | React.TouchEvent) => {
   if (nativeEvent instanceof TouchEvent) {
     const touch = nativeEvent.touches[0];
     const { clientX: x, clientY: y } = touch;
-
     return { x, y };
   }
 
@@ -28,32 +27,31 @@ const getPositionFromEvent = (e: React.MouseEvent | React.TouchEvent) => {
 const getDelta = (direction: Direction, deltaX: number, deltaY: number) =>
   direction === "vertical" ? deltaX : deltaY;
 
-const getSize = (size: number, delta: number, minSize?: number, maxSize?: number) => {
+const getSize = (size: number, delta: number, minSize?: number) => {
   if (minSize !== undefined && size + delta < minSize) return minSize;
-  if (maxSize !== undefined && size + delta > maxSize) return maxSize;
   return size + delta;
 };
 
-export default (
-  direction: Direction,
-  gutter: Gutter,
-  initialSize: number,
-  minSize?: number,
-  maxSize?: number,
-) => {
+export default (direction: Direction, gutter: Gutter, initialSize: number, minSize: number) => {
+  const [startingSize, setStartingSize] = useState(initialSize);
+
   const [isResizing, setIsResizing] = useState(false);
   const [size, setSize] = useState(initialSize);
   const [position, setPosition] = useState({ x: 0, y: 0 });
+  const [minimized, setMinimized] = useState(false);
+
+  const [difference, setDifference] = useState(0);
 
   const onResizeStart = useCallback(
     (e: React.MouseEvent<HTMLDivElement> | React.TouchEvent<HTMLDivElement>) => {
       const position = getPositionFromEvent(e);
       if (!position) return;
 
+      setStartingSize(size);
       setIsResizing(true);
       setPosition(position);
     },
-    [],
+    [size],
   );
 
   const onResize = useCallback(
@@ -65,10 +63,29 @@ export default (
       const deltaY = gutter === "start" ? position.y - y : y - position.y;
       const delta = getDelta(direction, deltaX, deltaY);
 
-      setSize(getSize(size, delta, minSize, maxSize));
+      const newDiff = difference + delta;
+
+      setDifference(newDiff);
+
+      setSize(getSize(size, delta, minSize));
+
+      if (!minimized && startingSize + newDiff <= minSize / 2) {
+        setMinimized(true);
+      }
       setPosition({ x, y });
     },
-    [isResizing, position, direction, gutter, size, minSize, maxSize],
+    [
+      isResizing,
+      gutter,
+      position.x,
+      position.y,
+      direction,
+      size,
+      startingSize,
+      minSize,
+      minimized,
+      difference,
+    ],
   );
 
   const onResizeEnd = useCallback(() => {
@@ -76,7 +93,9 @@ export default (
 
     setIsResizing(false);
     setPosition({ x: 0, y: 0 });
-  }, [isResizing]);
+    setStartingSize(size);
+    setDifference(0);
+  }, [isResizing, size]);
 
   const bindEventListeners = useCallback(() => {
     if (typeof window === "undefined") return;
@@ -113,5 +132,10 @@ export default (
     [onResizeStart],
   );
 
-  return { size, gutterProps };
+  const handleResetSize = useCallback(() => {
+    setMinimized(false);
+    setSize(initialSize);
+  }, [initialSize]);
+
+  return { size: size, gutterProps, minimized, handleResetSize };
 };
diff --git a/web/src/beta/components/Resizable/index.stories.tsx b/web/src/beta/components/Resizable/index.stories.tsx
index d34b2dd96..0210be606 100644
--- a/web/src/beta/components/Resizable/index.stories.tsx
+++ b/web/src/beta/components/Resizable/index.stories.tsx
@@ -22,9 +22,8 @@ export const Vertical: StoryObj<typeof Resizable> = {
   args: {
     direction: "vertical",
     gutter: "end",
-    size: 400,
-    minSize: 300,
-    maxSize: 500,
+    initialSize: 400,
+    minSize: 100,
   },
   render: args => {
     return (
@@ -40,9 +39,8 @@ export const Horizontal: StoryObj<typeof Resizable> = {
   args: {
     direction: "horizontal",
     gutter: "end",
-    size: 200,
-    minSize: 100,
-    maxSize: 300,
+    initialSize: 350,
+    minSize: 200,
   },
   render: args => {
     return (
diff --git a/web/src/beta/components/Resizable/index.tsx b/web/src/beta/components/Resizable/index.tsx
index 749210940..fad2e6f40 100644
--- a/web/src/beta/components/Resizable/index.tsx
+++ b/web/src/beta/components/Resizable/index.tsx
@@ -1,27 +1,25 @@
 import { ReactNode } from "react";
 
+import Icon from "@reearth/classic/components/atoms/Icon";
 import { styled } from "@reearth/services/theme";
 
-import useHooks from "./hooks";
+import useHooks, { type Direction, type Gutter } from "./hooks";
 
 type Props = {
   children?: ReactNode;
-  direction: "vertical" | "horizontal";
-  gutter: "start" | "end";
-  size: number;
-  minSize?: number;
-  maxSize?: number;
+  direction: Direction;
+  gutter: Gutter;
+  initialSize: number;
+  minSize: number;
 };
 
-const Resizable: React.FC<Props> = ({
-  direction,
-  gutter,
-  size: initialSize,
-  minSize,
-  maxSize,
-  children,
-}) => {
-  const { size, gutterProps } = useHooks(direction, gutter, initialSize, minSize, maxSize);
+const Resizable: React.FC<Props> = ({ direction, gutter, minSize, initialSize, children }) => {
+  const { size, gutterProps, minimized, handleResetSize } = useHooks(
+    direction,
+    gutter,
+    initialSize,
+    minSize,
+  );
 
   const showTopGutter = direction === "horizontal" && gutter === "start";
   const showRightGutter = direction === "vertical" && gutter === "end";
@@ -34,23 +32,39 @@ const Resizable: React.FC<Props> = ({
   const LeftGutter = showLeftGutter ? <VerticalGutter {...gutterProps} /> : null;
 
   return (
-    <StyledResizable direction={direction} size={size}>
-      {TopGutter}
-      {LeftGutter}
-      <Wrapper>{children}</Wrapper>
-      {RightGutter}
-      {BottomGutter}
-    </StyledResizable>
+    <>
+      {minimized ? (
+        <MinimizedWrapper direction={direction} onClick={handleResetSize}>
+          <Icon icon={gutter == "end" ? "arrowRight" : "arrowLeft"} />
+        </MinimizedWrapper>
+      ) : (
+        <StyledResizable direction={direction} size={size} minSize={minSize}>
+          {TopGutter}
+          {LeftGutter}
+          <Wrapper>{children}</Wrapper>
+          {RightGutter}
+          {BottomGutter}
+        </StyledResizable>
+      )}
+    </>
   );
 };
 
-const StyledResizable = styled.div<Pick<Props, "direction" | "size">>`
+const StyledResizable = styled.div<{
+  direction: "vertical" | "horizontal";
+  size: number;
+  minSize?: number;
+}>`
   display: flex;
   align-items: stretch;
   flex-direction: ${({ direction }) => (direction === "vertical" ? "row" : "column")};
   width: ${({ direction, size }) => (direction === "horizontal" ? null : `${size}px`)};
   height: ${({ direction, size }) => (direction === "vertical" ? null : `${size}px`)};
   flex-shrink: 0;
+  min-width: ${({ direction, minSize }) =>
+    direction === "vertical" && minSize ? `${minSize}px` : null};
+  min-height: ${({ direction, minSize }) =>
+    direction === "horizontal" && minSize ? `${minSize}px` : null};
 `;
 
 const Wrapper = styled.div`
@@ -74,4 +88,17 @@ const VerticalGutter = styled(Gutter)`
   cursor: col-resize;
 `;
 
+const MinimizedWrapper = styled.div<Pick<Props, "direction">>`
+  display: flex;
+  align-items: center;
+  width: ${({ direction }) => (direction === "horizontal" ? null : `24px`)};
+  height: ${({ direction }) => (direction === "vertical" ? null : `24px`)};
+  background: ${({ theme }) => theme.general.bg.weak};
+  cursor: pointer;
+  transition: background 0.3s;
+
+  :hover {
+    background: ${({ theme }) => theme.general.bg.veryWeak};
+  }
+`;
 export default Resizable;
diff --git a/web/src/beta/features/Editor/index.tsx b/web/src/beta/features/Editor/index.tsx
index 87c89014c..b93f94908 100644
--- a/web/src/beta/features/Editor/index.tsx
+++ b/web/src/beta/features/Editor/index.tsx
@@ -34,9 +34,8 @@ const Editor: React.FC<Props> = ({ sceneId, projectId, workspaceId, tab }) => {
             <Resizable
               direction="vertical"
               gutter="end"
-              size={metrics.propertyMenuMinWidth}
-              minSize={metrics.propertyMenuMinWidth}
-              maxSize={metrics.propertyMenuMaxWidth}>
+              initialSize={metrics.propertyMenuWidth}
+              minSize={metrics.propertyMenuMinWidth}>
               {leftPanel}
             </Resizable>
           )}
@@ -51,9 +50,8 @@ const Editor: React.FC<Props> = ({ sceneId, projectId, workspaceId, tab }) => {
             <Resizable
               direction="vertical"
               gutter="start"
-              size={metrics.propertyMenuMinWidth}
-              minSize={metrics.propertyMenuMinWidth}
-              maxSize={metrics.propertyMenuMaxWidth}>
+              initialSize={metrics.propertyMenuWidth}
+              minSize={metrics.propertyMenuMinWidth}>
               {rightPanel}
             </Resizable>
           )}
diff --git a/web/src/services/theme/reearthTheme/common/metrics.ts b/web/src/services/theme/reearthTheme/common/metrics.ts
index ef10c0d80..dcc67fad1 100644
--- a/web/src/services/theme/reearthTheme/common/metrics.ts
+++ b/web/src/services/theme/reearthTheme/common/metrics.ts
@@ -1,6 +1,6 @@
 const metrics = {
-  propertyMenuMinWidth: 272,
-  propertyMenuMaxWidth: 336,
+  propertyMenuWidth: 308,
+  propertyMenuMinWidth: 200,
 };
 
 export const metricsSizes = {