优化缩略图

_locales/de_DE.json

@@ -40,6 +40,7 @@
         "animatedPickHint": "Alle Ergebnisse behalten eine 400×400-Arbeitsfläche; das Label zeigt Detailauflösung@fps/Qualität/Dateigröße. Wählen Sie eines und drücken Sie Bestätigen, um es zu übernehmen, oder brechen Sie ab, um alle zu verwerfen.",
         "animatedPickConfirm": "Bestätigen",
         "animatedPriority": "Priorität",
+        "animatedCanvas": "Ausgabegröße",
         "priorityResolution": "Auflösung zuerst",
         "priorityFramerate": "Bildrate zuerst",
         "priorityBalanced": "Auflösung und Bildrate abwechselnd",

_locales/en.json

@@ -40,6 +40,7 @@
         "animatedPickHint": "Every result keeps a 400×400 canvas; the label shows detail resolution@fps/quality/file size. Select one and press Confirm to replace the thumbnail, or cancel to discard them all.",
         "animatedPickConfirm": "Confirm",
         "animatedPriority": "Priority",
+        "animatedCanvas": "Canvas size",
         "priorityResolution": "Resolution first",
         "priorityFramerate": "Frame rate first",
         "priorityBalanced": "Alternate resolution and frame rate",

_locales/es_ES.json

@@ -40,6 +40,7 @@
         "animatedPickHint": "Todos los resultados mantienen un lienzo de 400×400; la etiqueta indica la resolución de detalle@fps/calidad/tamaño de archivo. Elige uno y pulsa Confirmar para aplicarlo, o cancela para descartarlos todos.",
         "animatedPickConfirm": "Confirmar",
         "animatedPriority": "Prioridad",
+        "animatedCanvas": "Tamaño del lienzo",
         "priorityResolution": "Resolución primero",
         "priorityFramerate": "Frecuencia primero",
         "priorityBalanced": "Alternar resolución y frecuencia",

_locales/ja_JP.json

@@ -40,6 +40,7 @@
         "animatedPickHint": "すべての結果は 400×400 のキャンバスです。ラベルは実際のディテール解像度@fps/品質/ファイルサイズを示します。1つ選んで確認を押すと置き換え、キャンセルですべて破棄します。",
         "animatedPickConfirm": "確認",
         "animatedPriority": "優先度",
+        "animatedCanvas": "出力サイズ",
         "priorityResolution": "解像度優先",
         "priorityFramerate": "フレームレート優先",
         "priorityBalanced": "解像度とフレームレートを交互に",

_locales/ko_KR.json

@@ -40,6 +40,7 @@
         "animatedPickHint": "모든 결과의 캔버스는 400×400이며, 라벨은 실제 디테일 해상도@fps/품질/파일 크기입니다. 하나를 선택하고 확인을 누르면 적용되고, 취소하면 모두 버려집니다.",
         "animatedPickConfirm": "확인",
         "animatedPriority": "우선 순위",
+        "animatedCanvas": "출력 크기",
         "priorityResolution": "해상도 우선",
         "priorityFramerate": "프레임률 우선",
         "priorityBalanced": "해상도와 프레임률 교차",

_locales/ru_RU.json

@@ -40,6 +40,7 @@
         "animatedPickHint": "У всех результатов холст 400×400; в подписи указаны реальное разрешение детализации@fps/качество/размер файла. Выберите результат и нажмите «Подтвердить», чтобы применить его, или отмените, чтобы всё отбросить.",
         "animatedPickConfirm": "Подтвердить",
         "animatedPriority": "Приоритет",
+        "animatedCanvas": "Размер холста",
         "priorityResolution": "Сначала разрешение",
         "priorityFramerate": "Сначала частота кадров",
         "priorityBalanced": "Чередовать разрешение и частоту",

_locales/zh_CN.json

@@ -40,6 +40,7 @@
         "animatedPickHint": "所有结果画布都是 400×400，标签为实际细节分辨率@帧率/质量/文件大小。点选一个结果后按确认替换缩略图，取消则全部放弃。",
         "animatedPickConfirm": "确认",
         "animatedPriority": "优先级别",
+        "animatedCanvas": "输出尺寸",
         "priorityResolution": "分辨率优先",
         "priorityFramerate": "帧率优先",
         "priorityBalanced": "分辨率和帧率交替进行",

_locales/zh_TW.json

@@ -40,6 +40,7 @@
         "animatedPickHint": "所有結果畫布都是 400×400，標籤為實際細節解析度@影格率/品質/檔案大小。點選一個結果後按確認替換縮圖，取消則全部放棄。",
         "animatedPickConfirm": "確認",
         "animatedPriority": "優先級別",
+        "animatedCanvas": "輸出尺寸",
         "priorityResolution": "解析度優先",
         "priorityFramerate": "影格率優先",
         "priorityBalanced": "解析度與影格率交替進行",

js/animated-profiles.js

@@ -32,19 +32,35 @@ const ANIMATED_PRIORITIES = {
 
 const DEFAULT_PRIORITY = 'resolution';
 
+/**
+ * 可选的输出画布边长（正方形），界面上的下拉就是这两项。
+ *
+ * Eagle 缩略图网格里每格实际只显示 100–240px 左右，200 与 400 在这个尺寸下几乎看不出差别，
+ * 但像素数只有四分之一，体积能降约 4 倍。配置里写的细节分辨率超过所选边长时会被压下来，
+ * 所以同一份档位表在两种尺寸下都能用。
+ */
+const ANIMATED_OUTPUT_SIZES = [200, 400];
+const DEFAULT_OUTPUT_SIZE = 200;
+
 // 相邻锚点之间插多少个采样点。数值越大，越容易压在目标体积附近，但粗估阶段耗时略增。
 const PATH_STEPS_PER_SEGMENT = 6;
 
-function animatedProfiles(priority) {
+function animatedProfiles(priority, outputSize) {
+	const limit = outputSize || DEFAULT_OUTPUT_SIZE;
 	const plan = ANIMATED_PRIORITIES[priority] || ANIMATED_PRIORITIES[DEFAULT_PRIORITY];
-	return plan.map(([size, fps, quality]) => ({ size, fps, quality }));
+	return plan.map(([size, fps, quality]) => ({
+		size: Math.min(size, limit),
+		fps,
+		quality,
+	}));
 }
 
 /**
  * 把锚点路径插值成更密的采样路径，供按目标体积二分定位使用。
  * 分辨率取整、帧率至少 1、质量保留两位小数；首尾锚点原样保留。
  */
-function expandAnimatedPath(priority) {
+function expandAnimatedPath(priority, outputSize) {
+	const limit = outputSize || DEFAULT_OUTPUT_SIZE;
 	const anchors = ANIMATED_PRIORITIES[priority] || ANIMATED_PRIORITIES[DEFAULT_PRIORITY];
 	const lerp = (from, to, t) => from + (to - from) * t;
 	const path = [];
@@ -54,15 +70,23 @@ function expandAnimatedPath(priority) {
 		for (let step = 0; step < PATH_STEPS_PER_SEGMENT; step++) {
 			const t = step / PATH_STEPS_PER_SEGMENT;
 			path.push({
-				size: Math.round(lerp(fromSize, toSize, t)),
+				size: Math.min(limit, Math.round(lerp(fromSize, toSize, t))),
 				fps: Math.max(1, Math.round(lerp(fromFps, toFps, t))),
 				quality: Math.round(lerp(fromQuality, toQuality, t) * 100) / 100,
 			});
 		}
 	}
 	const [size, fps, quality] = anchors[anchors.length - 1];
-	path.push({ size, fps, quality });
+	path.push({ size: Math.min(size, limit), fps, quality });
 	return path;
 }
 
-module.exports = { ANIMATED_PRIORITIES, DEFAULT_PRIORITY, PATH_STEPS_PER_SEGMENT, animatedProfiles, expandAnimatedPath };
+module.exports = {
+	ANIMATED_PRIORITIES,
+	DEFAULT_PRIORITY,
+	ANIMATED_OUTPUT_SIZES,
+	DEFAULT_OUTPUT_SIZE,
+	PATH_STEPS_PER_SEGMENT,
+	animatedProfiles,
+	expandAnimatedPath,
+};

release/UNIVERSAL_SpineViewer/_locales/de_DE.json

@@ -40,6 +40,7 @@
         "animatedPickHint": "Alle Ergebnisse behalten eine 400×400-Arbeitsfläche; das Label zeigt Detailauflösung@fps/Qualität/Dateigröße. Wählen Sie eines und drücken Sie Bestätigen, um es zu übernehmen, oder brechen Sie ab, um alle zu verwerfen.",
         "animatedPickConfirm": "Bestätigen",
         "animatedPriority": "Priorität",
+        "animatedCanvas": "Ausgabegröße",
         "priorityResolution": "Auflösung zuerst",
         "priorityFramerate": "Bildrate zuerst",
         "priorityBalanced": "Auflösung und Bildrate abwechselnd",

release/UNIVERSAL_SpineViewer/_locales/en.json

@@ -40,6 +40,7 @@
         "animatedPickHint": "Every result keeps a 400×400 canvas; the label shows detail resolution@fps/quality/file size. Select one and press Confirm to replace the thumbnail, or cancel to discard them all.",
         "animatedPickConfirm": "Confirm",
         "animatedPriority": "Priority",
+        "animatedCanvas": "Canvas size",
         "priorityResolution": "Resolution first",
         "priorityFramerate": "Frame rate first",
         "priorityBalanced": "Alternate resolution and frame rate",

release/UNIVERSAL_SpineViewer/_locales/es_ES.json

@@ -40,6 +40,7 @@
         "animatedPickHint": "Todos los resultados mantienen un lienzo de 400×400; la etiqueta indica la resolución de detalle@fps/calidad/tamaño de archivo. Elige uno y pulsa Confirmar para aplicarlo, o cancela para descartarlos todos.",
         "animatedPickConfirm": "Confirmar",
         "animatedPriority": "Prioridad",
+        "animatedCanvas": "Tamaño del lienzo",
         "priorityResolution": "Resolución primero",
         "priorityFramerate": "Frecuencia primero",
         "priorityBalanced": "Alternar resolución y frecuencia",

release/UNIVERSAL_SpineViewer/_locales/ja_JP.json

@@ -40,6 +40,7 @@
         "animatedPickHint": "すべての結果は 400×400 のキャンバスです。ラベルは実際のディテール解像度@fps/品質/ファイルサイズを示します。1つ選んで確認を押すと置き換え、キャンセルですべて破棄します。",
         "animatedPickConfirm": "確認",
         "animatedPriority": "優先度",
+        "animatedCanvas": "出力サイズ",
         "priorityResolution": "解像度優先",
         "priorityFramerate": "フレームレート優先",
         "priorityBalanced": "解像度とフレームレートを交互に",

release/UNIVERSAL_SpineViewer/_locales/ko_KR.json

@@ -40,6 +40,7 @@
         "animatedPickHint": "모든 결과의 캔버스는 400×400이며, 라벨은 실제 디테일 해상도@fps/품질/파일 크기입니다. 하나를 선택하고 확인을 누르면 적용되고, 취소하면 모두 버려집니다.",
         "animatedPickConfirm": "확인",
         "animatedPriority": "우선 순위",
+        "animatedCanvas": "출력 크기",
         "priorityResolution": "해상도 우선",
         "priorityFramerate": "프레임률 우선",
         "priorityBalanced": "해상도와 프레임률 교차",

release/UNIVERSAL_SpineViewer/_locales/ru_RU.json

@@ -40,6 +40,7 @@
         "animatedPickHint": "У всех результатов холст 400×400; в подписи указаны реальное разрешение детализации@fps/качество/размер файла. Выберите результат и нажмите «Подтвердить», чтобы применить его, или отмените, чтобы всё отбросить.",
         "animatedPickConfirm": "Подтвердить",
         "animatedPriority": "Приоритет",
+        "animatedCanvas": "Размер холста",
         "priorityResolution": "Сначала разрешение",
         "priorityFramerate": "Сначала частота кадров",
         "priorityBalanced": "Чередовать разрешение и частоту",

release/UNIVERSAL_SpineViewer/_locales/zh_CN.json

@@ -40,6 +40,7 @@
         "animatedPickHint": "所有结果画布都是 400×400，标签为实际细节分辨率@帧率/质量/文件大小。点选一个结果后按确认替换缩略图，取消则全部放弃。",
         "animatedPickConfirm": "确认",
         "animatedPriority": "优先级别",
+        "animatedCanvas": "输出尺寸",
         "priorityResolution": "分辨率优先",
         "priorityFramerate": "帧率优先",
         "priorityBalanced": "分辨率和帧率交替进行",

release/UNIVERSAL_SpineViewer/_locales/zh_TW.json

@@ -40,6 +40,7 @@
         "animatedPickHint": "所有結果畫布都是 400×400，標籤為實際細節解析度@影格率/品質/檔案大小。點選一個結果後按確認替換縮圖，取消則全部放棄。",
         "animatedPickConfirm": "確認",
         "animatedPriority": "優先級別",
+        "animatedCanvas": "輸出尺寸",
         "priorityResolution": "解析度優先",
         "priorityFramerate": "影格率優先",
         "priorityBalanced": "解析度與影格率交替進行",

release/UNIVERSAL_SpineViewer/js/animated-profiles.js

@@ -32,19 +32,35 @@ const ANIMATED_PRIORITIES = {
 
 const DEFAULT_PRIORITY = 'resolution';
 
+/**
+ * 可选的输出画布边长（正方形），界面上的下拉就是这两项。
+ *
+ * Eagle 缩略图网格里每格实际只显示 100–240px 左右，200 与 400 在这个尺寸下几乎看不出差别，
+ * 但像素数只有四分之一，体积能降约 4 倍。配置里写的细节分辨率超过所选边长时会被压下来，
+ * 所以同一份档位表在两种尺寸下都能用。
+ */
+const ANIMATED_OUTPUT_SIZES = [200, 400];
+const DEFAULT_OUTPUT_SIZE = 200;
+
 // 相邻锚点之间插多少个采样点。数值越大，越容易压在目标体积附近，但粗估阶段耗时略增。
 const PATH_STEPS_PER_SEGMENT = 6;
 
-function animatedProfiles(priority) {
+function animatedProfiles(priority, outputSize) {
+	const limit = outputSize || DEFAULT_OUTPUT_SIZE;
 	const plan = ANIMATED_PRIORITIES[priority] || ANIMATED_PRIORITIES[DEFAULT_PRIORITY];
-	return plan.map(([size, fps, quality]) => ({ size, fps, quality }));
+	return plan.map(([size, fps, quality]) => ({
+		size: Math.min(size, limit),
+		fps,
+		quality,
+	}));
 }
 
 /**
  * 把锚点路径插值成更密的采样路径，供按目标体积二分定位使用。
  * 分辨率取整、帧率至少 1、质量保留两位小数；首尾锚点原样保留。
  */
-function expandAnimatedPath(priority) {
+function expandAnimatedPath(priority, outputSize) {
+	const limit = outputSize || DEFAULT_OUTPUT_SIZE;
 	const anchors = ANIMATED_PRIORITIES[priority] || ANIMATED_PRIORITIES[DEFAULT_PRIORITY];
 	const lerp = (from, to, t) => from + (to - from) * t;
 	const path = [];
@@ -54,15 +70,23 @@ function expandAnimatedPath(priority) {
 		for (let step = 0; step < PATH_STEPS_PER_SEGMENT; step++) {
 			const t = step / PATH_STEPS_PER_SEGMENT;
 			path.push({
-				size: Math.round(lerp(fromSize, toSize, t)),
+				size: Math.min(limit, Math.round(lerp(fromSize, toSize, t))),
 				fps: Math.max(1, Math.round(lerp(fromFps, toFps, t))),
 				quality: Math.round(lerp(fromQuality, toQuality, t) * 100) / 100,
 			});
 		}
 	}
 	const [size, fps, quality] = anchors[anchors.length - 1];
-	path.push({ size, fps, quality });
+	path.push({ size: Math.min(size, limit), fps, quality });
 	return path;
 }
 
-module.exports = { ANIMATED_PRIORITIES, DEFAULT_PRIORITY, PATH_STEPS_PER_SEGMENT, animatedProfiles, expandAnimatedPath };
+module.exports = {
+	ANIMATED_PRIORITIES,
+	DEFAULT_PRIORITY,
+	ANIMATED_OUTPUT_SIZES,
+	DEFAULT_OUTPUT_SIZE,
+	PATH_STEPS_PER_SEGMENT,
+	animatedProfiles,
+	expandAnimatedPath,
+};

release/UNIVERSAL_SpineViewer/viewer/spine.html

@@ -105,6 +105,12 @@
 				<label class="animated-thumb-quality"><span data-i18n="viewer.animatedMaxSize">缩略图大小</span>
 					<span class="animated-thumb-size"><input id="animatedThumbMaxSize" type="number" min="10" max="1024" step="10" value="30"><span>KB</span></span>
 				</label>
+				<label class="animated-thumb-quality"><span data-i18n="viewer.animatedCanvas">输出尺寸</span>
+					<select id="animatedThumbCanvas">
+						<option value="200" selected>200 × 200</option>
+						<option value="400">400 × 400</option>
+					</select>
+				</label>
 				<label class="animated-thumb-quality"><span data-i18n="viewer.animatedPriority">优先级别</span>
 					<select id="animatedThumbPriority">
 						<option value="resolution" data-i18n="viewer.priorityResolution">分辨率优先</option>
@@ -818,6 +824,7 @@
 		const endInput = document.getElementById('animatedThumbEnd');
 		const formatInput = document.getElementById('animatedThumbFormat');
 		const priorityInput = document.getElementById('animatedThumbPriority');
+		const canvasInput = document.getElementById('animatedThumbCanvas');
 		const maxSizeInput = document.getElementById('animatedThumbMaxSize');
 		const errorEl = document.getElementById('animatedThumbDialogError');
 		const confirm = document.getElementById('animatedThumbDialogConfirm');
@@ -830,6 +837,7 @@
 		endInput.max = String(totalFrames);
 		formatInput.value = 'webp';
 		priorityInput.value = animatedProfileConfig.DEFAULT_PRIORITY;
+		canvasInput.value = String(animatedProfileConfig.DEFAULT_OUTPUT_SIZE);
 		maxSizeInput.value = '30';
 		errorEl.textContent = '';
 		dialog.classList.remove('hidden');
@@ -858,6 +866,7 @@
 					end: Math.min(endFrame / FPS, animationLength),
 					format: formatInput.value === 'apng' ? 'apng' : 'webp',
 					priority: priorityInput.value,
+					canvasSize: Number(canvasInput.value) || animatedProfileConfig.DEFAULT_OUTPUT_SIZE,
 					maxKilobytes,
 				});
 			};
@@ -950,7 +959,7 @@
 	}
 
 	async function renderAnimatedSourceFrames(animation, options) {
-		const size = 400;
+		const size = options.canvasSize || animatedProfileConfig.DEFAULT_OUTPUT_SIZE;
 		const range = options.end - options.start;
 		// 长动画保持完整时间范围，但自动降低采样帧率，避免内存和输出体积失控。
 		const frameCount = Math.max(2, Math.min(240, Math.ceil(range * 18)));
@@ -1101,8 +1110,8 @@
 		const confirmButton = document.getElementById('animatedPickConfirm');
 		const targetBytes = options.maxKilobytes * 1024;
 		// 锚点插值成更密的搜索路径，候选数量仍按锚点数量给。
-		const searchPath = animatedProfileConfig.expandAnimatedPath(options.priority);
+		const searchPath = animatedProfileConfig.expandAnimatedPath(options.priority, options.canvasSize);
-		const candidateCount = animatedProfiles(options.priority).length;
+		const candidateCount = animatedProfiles(options.priority, options.canvasSize).length;
 		// 4 个离屏画布轮转：每帧编码互相独立，成批提交比逐帧等待快得多。
 		const pool = Array.from({ length: 4 }, () => {
 			const off = document.createElement('canvas');

tests/apng-thumbnail.test.js

@@ -63,7 +63,11 @@ for (const [name, plan] of Object.entries(priorities)) {
 	const list = profilesModule.animatedProfiles(name);
 	assert.equal(list.length, plan.length, name + ' 档位数必须跟随配置长度');
 	list.forEach((profile, index) => {
-		assert.equal(profile.size, plan[index][0], name + ' 第 ' + (index + 1) + ' 档分辨率');
+		assert.equal(
+			profile.size,
+			Math.min(plan[index][0], profilesModule.DEFAULT_OUTPUT_SIZE),
+			name + ' 第 ' + (index + 1) + ' 档分辨率（超过输出尺寸的要被压下来）',
+		);
 		assert.equal(profile.fps, plan[index][1], name + ' 第 ' + (index + 1) + ' 档帧率');
 		assert.equal(profile.quality, plan[index][2], name + ' 第 ' + (index + 1) + ' 档质量');
 	});
@@ -74,6 +78,23 @@ assert.deepEqual(
 	profilesModule.animatedProfiles(profilesModule.DEFAULT_PRIORITY),
 );
 
+// 动态缩略图可选 200×200 或 400×400，默认 200（Eagle 缩略图格子里看不出差别，体积只有四分之一）；
+// 配置里超过所选尺寸的细节分辨率会被自动压下来，所以同一份档位表两种尺寸都能用。
+assert.deepEqual(profilesModule.ANIMATED_OUTPUT_SIZES, [200, 400]);
+assert.equal(profilesModule.DEFAULT_OUTPUT_SIZE, 200);
+profilesModule.ANIMATED_PRIORITIES.__size = [[400, 15, 0.8], [100, 6, 0.2]];
+assert.deepEqual(profilesModule.animatedProfiles('__size').map((item) => item.size), [200, 100], '默认按 200 裁剪');
+assert.deepEqual(profilesModule.animatedProfiles('__size', 400).map((item) => item.size), [400, 100], '选 400 时保留 400');
+assert.ok(
+	profilesModule.expandAnimatedPath('__size').every((item) => item.size <= profilesModule.DEFAULT_OUTPUT_SIZE),
+	'插值路径不能超过默认输出尺寸',
+);
+assert.ok(
+	profilesModule.expandAnimatedPath('__size', 400).every((item) => item.size <= 400),
+	'选 400 时插值路径上限跟着放宽',
+);
+delete profilesModule.ANIMATED_PRIORITIES.__size;
+
 // 插值路径供按目标体积定位使用：比锚点更密，首尾与锚点一致。
 // 配置允许分段（分辨率优先就是「400 系列 + 200 系列」），所以不要求整条路径单调。
 for (const name of Object.keys(priorities)) {
@@ -98,14 +119,18 @@ for (const root of ['.', 'release/UNIVERSAL_SpineViewer']) {
 	assert.match(script, /groupThumbBtn'[\s\S]*addEventListener\('contextmenu'[\s\S]*generateGroupThumbnails\(true\)/);
 	assert.match(script, /async function generateGroupThumbnails\(animated = false\)/);
 	assert.match(script, /if \(animated[\s\S]*renderAnimatedSourceFrames\(animation, options\)[\s\S]*pickAnimatedThumbnail\(source\.sourceFrames, source\.size, source\.range, options\)[\s\S]*renderCurrentFrameThumbnail\(\)/);
-	assert.match(script, /const size = 400;/, 'animated output must remain fixed at 400x400');
+	assert.match(script, /const size = options\.canvasSize \|\| animatedProfileConfig\.DEFAULT_OUTPUT_SIZE;/, '动态缩略图用界面选的输出尺寸');
+	assert.match(script, /const size = 400;/, '静态缩略图仍然是 400×400');
+	assert.match(html, /id="animatedThumbCanvas"/);
+	assert.match(html, /<option value="200" selected>200 × 200<\/option>/);
+	assert.match(script, /canvasSize: Number\(canvasInput\.value\) \|\| animatedProfileConfig\.DEFAULT_OUTPUT_SIZE/);
 	assert.match(script, /async function renderAnimatedSourceFrames\(animation, options\)/);
 	assert.match(script, /async function pickAnimatedThumbnail\(sourceFrames, size, range, options\)/);
 	assert.match(script, /const targetBytes = options\.maxKilobytes \* 1024/);
 	// 档位表来自独立配置文件，三种优先级都走画廊手动挑，不会自动应用。
 	assert.match(script, /require\('\.\.\/js\/animated-profiles\.js'\)/);
 	// 候选先估算整条路径的体积，再按「目标 0.5× ~ 2× 对数间隔」挑，覆盖面比挤在目标附近更宽。
-	assert.match(script, /animatedProfileConfig\.expandAnimatedPath\(options\.priority\)/);
+	assert.match(script, /animatedProfileConfig\.expandAnimatedPath\(options\.priority, options\.canvasSize\)/);
 	assert.match(script, /pickAnimatedCandidates\(\s*searchPath, sourceFrames, size, range, options, targetBytes, candidateCount, encodeFrame,?\s*\)/);
 	assert.match(script, /const low = Math\.log\(Math\.max\(samples\[0\]\.bytes, targetBytes \* 0\.5\)\)/);
 	assert.match(script, /const wanted = Math\.exp\(low \+ \(high - low\) \* slot \/ span\)/);

viewer/spine.html

@@ -105,6 +105,12 @@
 				<label class="animated-thumb-quality"><span data-i18n="viewer.animatedMaxSize">缩略图大小</span>
 					<span class="animated-thumb-size"><input id="animatedThumbMaxSize" type="number" min="10" max="1024" step="10" value="30"><span>KB</span></span>
 				</label>
+				<label class="animated-thumb-quality"><span data-i18n="viewer.animatedCanvas">输出尺寸</span>
+					<select id="animatedThumbCanvas">
+						<option value="200" selected>200 × 200</option>
+						<option value="400">400 × 400</option>
+					</select>
+				</label>
 				<label class="animated-thumb-quality"><span data-i18n="viewer.animatedPriority">优先级别</span>
 					<select id="animatedThumbPriority">
 						<option value="resolution" data-i18n="viewer.priorityResolution">分辨率优先</option>
@@ -818,6 +824,7 @@
 		const endInput = document.getElementById('animatedThumbEnd');
 		const formatInput = document.getElementById('animatedThumbFormat');
 		const priorityInput = document.getElementById('animatedThumbPriority');
+		const canvasInput = document.getElementById('animatedThumbCanvas');
 		const maxSizeInput = document.getElementById('animatedThumbMaxSize');
 		const errorEl = document.getElementById('animatedThumbDialogError');
 		const confirm = document.getElementById('animatedThumbDialogConfirm');
@@ -830,6 +837,7 @@
 		endInput.max = String(totalFrames);
 		formatInput.value = 'webp';
 		priorityInput.value = animatedProfileConfig.DEFAULT_PRIORITY;
+		canvasInput.value = String(animatedProfileConfig.DEFAULT_OUTPUT_SIZE);
 		maxSizeInput.value = '30';
 		errorEl.textContent = '';
 		dialog.classList.remove('hidden');
@@ -858,6 +866,7 @@
 					end: Math.min(endFrame / FPS, animationLength),
 					format: formatInput.value === 'apng' ? 'apng' : 'webp',
 					priority: priorityInput.value,
+					canvasSize: Number(canvasInput.value) || animatedProfileConfig.DEFAULT_OUTPUT_SIZE,
 					maxKilobytes,
 				});
 			};
@@ -950,7 +959,7 @@
 	}
 
 	async function renderAnimatedSourceFrames(animation, options) {
-		const size = 400;
+		const size = options.canvasSize || animatedProfileConfig.DEFAULT_OUTPUT_SIZE;
 		const range = options.end - options.start;
 		// 长动画保持完整时间范围，但自动降低采样帧率，避免内存和输出体积失控。
 		const frameCount = Math.max(2, Math.min(240, Math.ceil(range * 18)));
@@ -1101,8 +1110,8 @@
 		const confirmButton = document.getElementById('animatedPickConfirm');
 		const targetBytes = options.maxKilobytes * 1024;
 		// 锚点插值成更密的搜索路径，候选数量仍按锚点数量给。
-		const searchPath = animatedProfileConfig.expandAnimatedPath(options.priority);
+		const searchPath = animatedProfileConfig.expandAnimatedPath(options.priority, options.canvasSize);
-		const candidateCount = animatedProfiles(options.priority).length;
+		const candidateCount = animatedProfiles(options.priority, options.canvasSize).length;
 		// 4 个离屏画布轮转：每帧编码互相独立，成批提交比逐帧等待快得多。
 		const pool = Array.from({ length: 4 }, () => {
 			const off = document.createElement('canvas');