diff --git a/locales/index.d.ts b/locales/index.d.ts
index 4d8c86b110..c0781594f8 100644
--- a/locales/index.d.ts
+++ b/locales/index.d.ts
@@ -5618,6 +5618,10 @@ export interface Locale extends ILocale {
          * ラベルの幅
          */
         "labelThickness": string;
+        /**
+         * ラベルのスケール
+         */
+        "labelScale": string;
         /**
          * 中央揃え
          */
diff --git a/locales/ja-JP.yml b/locales/ja-JP.yml
index d6a1dff2b6..d5b18b7afe 100644
--- a/locales/ja-JP.yml
+++ b/locales/ja-JP.yml
@@ -1401,6 +1401,7 @@ _imageLabelEditor:
   title: "ラベルの編集"
   frameThickness: "フレームの幅"
   labelThickness: "ラベルの幅"
+  labelScale: "ラベルのスケール"
   centered: "中央揃え"
   captionMain: "キャプション(大)"
   captionSub: "キャプション(小)"
diff --git a/packages/frontend/src/components/MkImageLabelEditorDialog.vue b/packages/frontend/src/components/MkImageLabelEditorDialog.vue
index ef0e4d971c..18c2e365dc 100644
--- a/packages/frontend/src/components/MkImageLabelEditorDialog.vue
+++ b/packages/frontend/src/components/MkImageLabelEditorDialog.vue
@@ -34,10 +34,14 @@ SPDX-License-Identifier: AGPL-3.0-only
 						<template #label>{{ i18n.ts._imageLabelEditor.frameThickness }}</template>
 					</MkRange>
 
-					<MkRange v-model="frame.labelThickness" :min="0.1" :max="0.3" :step="0.01" :continuousUpdate="true">
+					<MkRange v-model="frame.labelThickness" :min="0.01" :max="0.5" :step="0.01" :continuousUpdate="true">
 						<template #label>{{ i18n.ts._imageLabelEditor.labelThickness }}</template>
 					</MkRange>
 
+					<MkRange v-model="frame.labelScale" :min="0.5" :max="2.0" :step="0.01" :continuousUpdate="true">
+						<template #label>{{ i18n.ts._imageLabelEditor.labelScale }}</template>
+					</MkRange>
+
 					<MkSwitch v-model="frame.centered">
 						<template #label>{{ i18n.ts._imageLabelEditor.centered }}</template>
 					</MkSwitch>
@@ -74,6 +78,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 <script setup lang="ts">
 import { ref, useTemplateRef, watch, onMounted, onUnmounted, reactive, nextTick } from 'vue';
 import ExifReader from 'exifreader';
+import { throttle } from 'throttle-debounce';
 import type { ImageLabelParams } from '@/utility/image-label-renderer.js';
 import { ImageLabelRenderer } from '@/utility/image-label-renderer.js';
 import { i18n } from '@/i18n.js';
@@ -114,6 +119,7 @@ const frame = reactive<ImageLabelParams>(deepClone(props.frame) ?? {
 	style: 'frame',
 	frameThickness: 0.05,
 	labelThickness: 0.2,
+	labelScale: 1.0,
 	title: 'Untitled by @syuilo',
 	text: '{mm}mm   f/{f}   {s}s   ISO{iso}',
 	centered: false,
@@ -132,10 +138,14 @@ async function cancel() {
 	dialog.value?.close();
 }
 
-watch(frame, async (newValue, oldValue) => {
+const updateThrottled = throttle(100, () => {
 	if (renderer != null) {
 		renderer.update(frame);
 	}
+});
+
+watch(frame, async (newValue, oldValue) => {
+	updateThrottled();
 }, { deep: true });
 
 const canvasEl = useTemplateRef('canvasEl');
diff --git a/packages/frontend/src/utility/image-effector/fxs/label.glsl b/packages/frontend/src/utility/image-effector/fxs/label.glsl
index 2cb379e363..5a260e4d9f 100644
--- a/packages/frontend/src/utility/image-effector/fxs/label.glsl
+++ b/packages/frontend/src/utility/image-effector/fxs/label.glsl
@@ -11,10 +11,10 @@ uniform sampler2D in_texture;
 uniform vec2 in_resolution;
 uniform sampler2D u_image;
 uniform sampler2D u_label;
-uniform vec2 u_labelResolution;
-uniform bool u_labelEnabled;
-uniform float u_imageMarginX;
-uniform float u_imageMarginY;
+uniform float u_paddingTop;
+uniform float u_paddingBottom;
+uniform float u_paddingLeft;
+uniform float u_paddingRight;
 out vec4 out_color;
 
 float remap(float value, float inputMin, float inputMax, float outputMin, float outputMax) {
@@ -22,19 +22,20 @@ float remap(float value, float inputMin, float inputMax, float outputMin, float
 }
 
 void main() {
-	float labelRatio = u_labelEnabled ? (u_labelResolution.y / in_resolution.y) : 0.0;
-
 	vec4 image_color = texture(u_image, vec2(
-		remap(in_uv.x, u_imageMarginX, 1.0 - u_imageMarginX, 0.0, 1.0),
-		remap(in_uv.y, u_imageMarginY, 1.0 - labelRatio, 0.0, 1.0)
+		remap(in_uv.x, u_paddingLeft, 1.0 - u_paddingRight, 0.0, 1.0),
+		remap(in_uv.y, u_paddingTop, 1.0 - u_paddingBottom, 0.0, 1.0)
 	));
 
-	vec4 label_color = texture(u_label, (in_uv - vec2(0.0, 1.0 - labelRatio)) / vec2(1.0, labelRatio));
+	vec4 label_color = texture(u_label, vec2(
+		in_uv.x,
+		remap(in_uv.y, 1.0 - u_paddingBottom, 1.0, 0.0, 1.0)
+	));
 
-	if (in_uv.y > (1.0 - labelRatio)) {
+	if (in_uv.y > (1.0 - u_paddingBottom)) {
 		out_color = label_color;
 	} else {
-		if (in_uv.y > u_imageMarginY && in_uv.x > u_imageMarginX && in_uv.x < (1.0 - u_imageMarginX)) {
+		if (in_uv.y > u_paddingTop && in_uv.x > u_paddingLeft && in_uv.x < (1.0 - u_paddingRight)) {
 			out_color = image_color;
 		} else {
 			out_color = vec4(1.0, 1.0, 1.0, 1.0);
diff --git a/packages/frontend/src/utility/image-effector/fxs/label.ts b/packages/frontend/src/utility/image-effector/fxs/label.ts
index b919e448ae..5333cc6bfb 100644
--- a/packages/frontend/src/utility/image-effector/fxs/label.ts
+++ b/packages/frontend/src/utility/image-effector/fxs/label.ts
@@ -10,7 +10,7 @@ export const FX_label = defineImageEffectorFx({
 	id: 'label',
 	name: '(internal)',
 	shader,
-	uniforms: ['image', 'label', 'labelResolution', 'labelEnabled', 'imageMarginX', 'imageMarginY'] as const,
+	uniforms: ['image', 'label', 'paddingTop', 'paddingBottom', 'paddingLeft', 'paddingRight'] as const,
 	params: {
 		image: {
 			type: 'textureRef',
@@ -20,15 +20,27 @@ export const FX_label = defineImageEffectorFx({
 			type: 'textureRef',
 			default: null,
 		},
-		imageMarginX: {
+		paddingTop: {
 			type: 'number',
-			default: 0.05,
+			default: 0,
 			max: 1,
 			min: 0,
 		},
-		imageMarginY: {
+		paddingBottom: {
 			type: 'number',
-			default: 0.05,
+			default: 0,
+			max: 1,
+			min: 0,
+		},
+		paddingLeft: {
+			type: 'number',
+			default: 0,
+			max: 1,
+			min: 0,
+		},
+		paddingRight: {
+			type: 'number',
+			default: 0,
 			max: 1,
 			min: 0,
 		},
@@ -39,19 +51,16 @@ export const FX_label = defineImageEffectorFx({
 		gl.bindTexture(gl.TEXTURE_2D, image.texture);
 		gl.uniform1i(u.image, 1);
 
-		gl.uniform1f(u.imageMarginX, params.imageMarginX);
-		gl.uniform1f(u.imageMarginY, params.imageMarginY);
+		gl.uniform1f(u.paddingTop, params.paddingTop);
+		gl.uniform1f(u.paddingBottom, params.paddingBottom);
+		gl.uniform1f(u.paddingLeft, params.paddingLeft);
+		gl.uniform1f(u.paddingRight, params.paddingRight);
 
 		const label = textures.label;
 		if (label) {
 			gl.activeTexture(gl.TEXTURE2);
 			gl.bindTexture(gl.TEXTURE_2D, label.texture);
-
 			gl.uniform1i(u.label, 2);
-			gl.uniform2f(u.labelResolution, label.width, label.height);
-			gl.uniform1i(u.labelEnabled, 1);
-		} else {
-			gl.uniform1i(u.labelEnabled, 0);
 		}
 	},
 });
diff --git a/packages/frontend/src/utility/image-label-renderer.ts b/packages/frontend/src/utility/image-label-renderer.ts
index c5a620f3e3..4b3ede8f6b 100644
--- a/packages/frontend/src/utility/image-label-renderer.ts
+++ b/packages/frontend/src/utility/image-label-renderer.ts
@@ -19,6 +19,7 @@ export type ImageLabelParams = {
 	style: 'frame' | 'frameLess';
 	frameThickness: number;
 	labelThickness: number;
+	labelScale: number;
 	title: string;
 	text: string;
 	centered: boolean;
@@ -96,11 +97,12 @@ export class ImageLabelRenderer {
 		const labelCanvasCtx = window.document.createElement('canvas').getContext('2d')!;
 		labelCanvasCtx.canvas.width = renderWidth;
 		labelCanvasCtx.canvas.height = paddingBottom;
-		const fontSize = labelCanvasCtx.canvas.height / 6;
+		const scaleBase = imageAreaH * params.labelScale;
+		const fontSize = scaleBase / 30;
 		const textsMarginLeft = Math.max(fontSize * 2, paddingLeft);
 		const textsMarginRight = textsMarginLeft;
 		const withQrCode = params.withQrCode;
-		const qrSize = labelCanvasCtx.canvas.height * 0.6;
+		const qrSize = scaleBase * 0.1;
 		const qrMarginRight = Math.max((labelCanvasCtx.canvas.height - qrSize) / 2, paddingRight);
 
 		labelCanvasCtx.fillStyle = '#ffffff';
@@ -135,49 +137,53 @@ export class ImageLabelRenderer {
 		const $i = ensureSignin();
 
 		if (withQrCode) {
-			const qrCodeInstance = new QRCodeStyling({
-				width: labelCanvasCtx.canvas.height,
-				height: labelCanvasCtx.canvas.height,
-				margin: 0,
-				type: 'canvas',
-				data: `${url}/users/${$i.id}`,
-				//image: $i.avatarUrl,
-				qrOptions: {
-					typeNumber: 0,
-					mode: 'Byte',
-					errorCorrectionLevel: 'H',
-				},
-				imageOptions: {
-					hideBackgroundDots: true,
-					imageSize: 0.3,
-					margin: 16,
-					crossOrigin: 'anonymous',
-				},
-				dotsOptions: {
-					type: 'dots',
-					roundSize: false,
-				},
-				cornersDotOptions: {
-					type: 'dot',
-				},
-				cornersSquareOptions: {
-					type: 'extra-rounded',
-				},
-			});
+			try {
+				const qrCodeInstance = new QRCodeStyling({
+					width: labelCanvasCtx.canvas.height,
+					height: labelCanvasCtx.canvas.height,
+					margin: 0,
+					type: 'canvas',
+					data: `${url}/users/${$i.id}`,
+					//image: $i.avatarUrl,
+					qrOptions: {
+						typeNumber: 0,
+						mode: 'Byte',
+						errorCorrectionLevel: 'H',
+					},
+					imageOptions: {
+						hideBackgroundDots: true,
+						imageSize: 0.3,
+						margin: 16,
+						crossOrigin: 'anonymous',
+					},
+					dotsOptions: {
+						type: 'dots',
+						roundSize: false,
+					},
+					cornersDotOptions: {
+						type: 'dot',
+					},
+					cornersSquareOptions: {
+						type: 'extra-rounded',
+					},
+				});
 
-			const blob = await qrCodeInstance.getRawData('png') as Blob | null;
-			if (blob == null) throw new Error('Failed to generate QR code');
+				const blob = await qrCodeInstance.getRawData('png') as Blob | null;
+				if (blob == null) throw new Error('Failed to generate QR code');
 
-			const qrImageBitmap = await window.createImageBitmap(blob);
+				const qrImageBitmap = await window.createImageBitmap(blob);
 
-			labelCanvasCtx.drawImage(
-				qrImageBitmap,
-				labelCanvasCtx.canvas.width - qrSize - qrMarginRight,
-				(labelCanvasCtx.canvas.height - qrSize) / 2,
-				qrSize,
-				qrSize,
-			);
-			qrImageBitmap.close();
+				labelCanvasCtx.drawImage(
+					qrImageBitmap,
+					labelCanvasCtx.canvas.width - qrSize - qrMarginRight,
+					(labelCanvasCtx.canvas.height - qrSize) / 2,
+					qrSize,
+					qrSize,
+				);
+				qrImageBitmap.close();
+			} catch (err) {
+				// nop
+			}
 		}
 
 		const data = labelCanvasCtx.getImageData(0, 0, labelCanvasCtx.canvas.width, labelCanvasCtx.canvas.height);
@@ -192,8 +198,10 @@ export class ImageLabelRenderer {
 			params: {
 				image: 'image',
 				label: 'label',
-				imageMarginX: paddingLeft / renderWidth,
-				imageMarginY: paddingTop / renderHeight,
+				paddingLeft: paddingLeft / renderWidth,
+				paddingRight: paddingRight / renderWidth,
+				paddingTop: paddingTop / renderHeight,
+				paddingBottom: paddingBottom / renderHeight,
 			},
 		}]);
 	}