diff --git a/_locales/zh_CN.json b/_locales/zh_CN.json
index 5d2e985..86b3337 100644
--- a/_locales/zh_CN.json
+++ b/_locales/zh_CN.json
@@ -21,7 +21,7 @@
         "thumbnail": "设为当前素材缩略图",
         "thumbnailTitle": "将当前帧设为当前素材的 400×400 自定义缩略图",
         "animatedThumbnailTitle": "生成动画缩略图",
-        "animatedThumbnailNote": "生成后将替换当前素材缩略图，插件无法自动恢复原图。将自动降低帧数、颜色精度和内部细节；仍超标时会把尺寸从 400×400 逐级调低。",
+        "animatedThumbnailNote": "生成后将替换所选素材的缩略图，插件无法自动恢复原图。将自动降低帧数、颜色精度和内部细节；仍超标时会把尺寸从 400×400 逐级调低。",
         "animatedRange": "动画范围",
         "animatedStart": "开始",
         "animatedEnd": "结束",
@@ -40,7 +40,7 @@
         "animatedTooLarge": "动画缩略图超过 50 MB，请缩短范围或选择更低质量",
         "animatedThumbUpdated": "动画缩略图已更新 · {frames} 帧 · {size} KB",
         "groupThumbnail": "为关联资源生成缩略图",
-        "groupThumbnailTitle": "列出当前 Spine 关联资源，确认后批量生成缩略图",
+        "groupThumbnailTitle": "左键为关联资源生成当前帧缩略图，右键生成当前动画缩略图",
         "groupDialogTitle": "为关联资源生成缩略图",
         "groupDialogSummary": "将生成 {generate} 项，跳过 {skip} 项。",
         "groupDialogNote": "只会为勾选的关联资源生成缩略图。图片和已有自定义缩略图的资源默认不勾选；若勾选后者，原缩略图将被替换且插件无法自动恢复。",
diff --git a/release/UNIVERSAL_SpineViewer/_locales/zh_CN.json b/release/UNIVERSAL_SpineViewer/_locales/zh_CN.json
index 5d2e985..86b3337 100644
--- a/release/UNIVERSAL_SpineViewer/_locales/zh_CN.json
+++ b/release/UNIVERSAL_SpineViewer/_locales/zh_CN.json
@@ -21,7 +21,7 @@
         "thumbnail": "设为当前素材缩略图",
         "thumbnailTitle": "将当前帧设为当前素材的 400×400 自定义缩略图",
         "animatedThumbnailTitle": "生成动画缩略图",
-        "animatedThumbnailNote": "生成后将替换当前素材缩略图，插件无法自动恢复原图。将自动降低帧数、颜色精度和内部细节；仍超标时会把尺寸从 400×400 逐级调低。",
+        "animatedThumbnailNote": "生成后将替换所选素材的缩略图，插件无法自动恢复原图。将自动降低帧数、颜色精度和内部细节；仍超标时会把尺寸从 400×400 逐级调低。",
         "animatedRange": "动画范围",
         "animatedStart": "开始",
         "animatedEnd": "结束",
@@ -40,7 +40,7 @@
         "animatedTooLarge": "动画缩略图超过 50 MB，请缩短范围或选择更低质量",
         "animatedThumbUpdated": "动画缩略图已更新 · {frames} 帧 · {size} KB",
         "groupThumbnail": "为关联资源生成缩略图",
-        "groupThumbnailTitle": "列出当前 Spine 关联资源，确认后批量生成缩略图",
+        "groupThumbnailTitle": "左键为关联资源生成当前帧缩略图，右键生成当前动画缩略图",
         "groupDialogTitle": "为关联资源生成缩略图",
         "groupDialogSummary": "将生成 {generate} 项，跳过 {skip} 项。",
         "groupDialogNote": "只会为勾选的关联资源生成缩略图。图片和已有自定义缩略图的资源默认不勾选；若勾选后者，原缩略图将被替换且插件无法自动恢复。",
diff --git a/release/UNIVERSAL_SpineViewer/viewer/spine.css b/release/UNIVERSAL_SpineViewer/viewer/spine.css
index e3a57ce..3a70237 100644
--- a/release/UNIVERSAL_SpineViewer/viewer/spine.css
+++ b/release/UNIVERSAL_SpineViewer/viewer/spine.css
@@ -112,16 +112,24 @@
 		}
 		.thumb-dialog-input.hidden { display: none; }
 		.thumb-dialog-error { color: var(--error); min-height: 18px; }
-		.animated-thumb-card { width: min(520px, 92vw); }
+		.animated-thumb-card { width: min(480px, 92vw); gap: 10px; padding: 16px; }
 		.thumb-dialog-note.warning { color: #e6b35c; }
-		.animated-thumb-form { display: grid; gap: 12px; padding: 4px 0; }
+		.animated-thumb-card .thumb-dialog-note { font-size: 13px; }
+		.animated-thumb-form { display: grid; grid-template-columns: 96px minmax(0, 1fr); align-items: center; gap: 10px 14px; padding: 2px 0; }
 		.animated-thumb-label { color: var(--text-dim); }
-		.animated-thumb-range { display: flex; align-items: center; gap: 8px; }
+		.animated-thumb-range { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; }
 		.animated-thumb-range label { display: flex; align-items: center; gap: 6px; }
 		.animated-thumb-range input { width: 88px; }
-		.animated-thumb-quality { display: flex; align-items: center; justify-content: space-between; gap: 16px; color: var(--text-dim); }
+		.animated-thumb-quality { grid-column: 1 / -1; display: grid; grid-template-columns: 96px minmax(0, 1fr); align-items: center; gap: 14px; color: var(--text-dim); }
 		.animated-thumb-size { display: flex; align-items: center; gap: 7px; color: var(--text); }
-		.animated-thumb-size input { width: 108px; }
+		.animated-thumb-size input { width: 88px; }
+		.animated-thumb-form input[type="number"] {
+			box-sizing: border-box; height: 32px; padding: 4px 8px;
+			background: var(--panel-2); color: var(--text);
+			border: 1px solid var(--border); border-radius: 4px;
+		}
+		.animated-thumb-form input[type="number"]:focus { outline: none; border-color: var(--accent); }
+		.animated-thumb-card .thumb-dialog-actions { margin-top: 2px; }
 		/* 收窄下拉，避免在窄窗口下把右侧按钮挤到第二行（展开后的选项不受影响）*/
 		#toolbar #suffixSelect { max-width: 140px; }
 		#stage { position: absolute; inset: 0; display: flex; overflow: hidden; }
diff --git a/release/UNIVERSAL_SpineViewer/viewer/spine.html b/release/UNIVERSAL_SpineViewer/viewer/spine.html
index f3c0312..adb5a82 100644
--- a/release/UNIVERSAL_SpineViewer/viewer/spine.html
+++ b/release/UNIVERSAL_SpineViewer/viewer/spine.html
@@ -29,7 +29,7 @@
 			<span data-i18n="viewer.suffix">尾缀</span>
 			<select id="suffixSelect"></select>
 		</label>
-		<button id="groupThumbBtn" data-i18n="viewer.groupThumbnail" data-i18n-title="viewer.groupThumbnailTitle" title="为关联资源生成缩略图">为关联资源生成缩略图</button>
+		<button id="groupThumbBtn" data-i18n="viewer.groupThumbnail" data-i18n-title="viewer.groupThumbnailTitle" title="左键生成静帧缩略图，右键生成动画缩略图">为关联资源生成缩略图</button>
 		<button id="thumbBtn" data-i18n="viewer.thumbnail" data-i18n-title="viewer.thumbnailTitle" title="将当前帧设为当前素材的缩略图">设为当前素材缩略图</button>
 		<label id="verLabel" style="color: var(--text-dim);" data-i18n-title="viewer.versionTitle" title="Spine 版本"></label>
 		<button id="reloadBtn" title="重新加载目录" data-i18n-title="viewer.reloadTitle">↻</button>
@@ -1042,7 +1042,7 @@
 		}
 	}
 
-	async function generateGroupThumbnails() {
+	async function generateGroupThumbnails(animated = false) {
 		if (!skeleton || !renderer || !activeAssets) { setStatus(t('viewer.noSkeletonForThumb')); return; }
 		const groupThumbBtn = document.getElementById('groupThumbBtn');
 		groupThumbBtn.disabled = true;
@@ -1056,8 +1056,17 @@
 				if (rows.length && rows.every((row) => row.state === 'unavailable')) setStatus(t('viewer.groupNoTargets'), 4000);
 				return;
 			}
-			setStatus(t('viewer.generating'), Infinity);
-			const rendered = await renderCurrentFrameThumbnail();
+			let rendered;
+			const animation = (skeletonData.animations || [])[currentAnim];
+			if (animated && !isStaticAnimation && currentAnim !== SETUP_POSE_INDEX && animation && animationDuration(animation) > STATIC_EPSILON) {
+				const options = await confirmAnimatedThumbnail(animation);
+				if (!options) return;
+				setStatus(t('viewer.animatedGenerating', { current: 0, total: '…' }), Infinity);
+				rendered = await renderAnimatedThumbnail(animation, options);
+			} else {
+				setStatus(t('viewer.generating'), Infinity);
+				rendered = await renderCurrentFrameThumbnail();
+			}
 			const result = await groupThumbnails.applyThumbnailTargets({
 				targets,
 				initialSkipped: rows.length - targets.length,
@@ -1858,7 +1867,11 @@
 	document.getElementById('reloadBtn').addEventListener('click', () => {
 		window.location.reload();
 	});
-	document.getElementById('groupThumbBtn').addEventListener('click', generateGroupThumbnails);
+	document.getElementById('groupThumbBtn').addEventListener('click', () => generateGroupThumbnails());
+	document.getElementById('groupThumbBtn').addEventListener('contextmenu', (event) => {
+		event.preventDefault();
+		generateGroupThumbnails(true);
+	});
 	document.getElementById('thumbBtn').addEventListener('click', generateThumbnail);
 	document.getElementById('thumbBtn').addEventListener('contextmenu', (event) => {
 		event.preventDefault();
diff --git a/tests/apng-thumbnail.test.js b/tests/apng-thumbnail.test.js
index 0830055..37a72a4 100644
--- a/tests/apng-thumbnail.test.js
+++ b/tests/apng-thumbnail.test.js
@@ -41,9 +41,13 @@ assert.equal(parsed[5].data.readUInt32BE(0), 2);
 
 for (const root of ['.', 'release/UNIVERSAL_SpineViewer']) {
 	const html = fs.readFileSync(root + '/viewer/spine.html', 'utf8');
+	const css = fs.readFileSync(root + '/viewer/spine.css', 'utf8');
 	const script = html.match(/<script>([\s\S]*?)<\/script>/)[1];
 	new vm.Script(script);
 	assert.match(script, /addEventListener\('contextmenu'[\s\S]*generateAnimatedThumbnail\(\)/);
+	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]*renderAnimatedThumbnail\(animation, options\)[\s\S]*renderCurrentFrameThumbnail\(\)/);
 	assert.match(script, /const size = 400;/, 'animated output must remain fixed at 400x400');
 	assert.match(script, /async function encodeAnimatedThumbnailToLimit/);
 	assert.match(script, /const targetBytes = maxKilobytes \* 1024/);
@@ -63,6 +67,8 @@ for (const root of ['.', 'release/UNIVERSAL_SpineViewer']) {
 	assert.doesNotMatch(html, /id="animatedThumbQuality"/);
 	assert.doesNotMatch(html, /viewer\.secondsUnit/);
 	assert.match(html, /id="animatedThumbDialog"/);
+	assert.match(css, /\.animated-thumb-form \{[^}]*grid-template-columns: 96px minmax\(0, 1fr\)/);
+	assert.match(css, /\.animated-thumb-form input\[type="number"\]/);
 }
 
-console.log('PASS: APNG structure, 400px maximum with size fallback, byte limit and right-click wiring');
+console.log('PASS: APNG structure, compact dialog, size fallback and single/group right-click wiring');
diff --git a/viewer/spine.css b/viewer/spine.css
index e3a57ce..3a70237 100644
--- a/viewer/spine.css
+++ b/viewer/spine.css
@@ -112,16 +112,24 @@
 		}
 		.thumb-dialog-input.hidden { display: none; }
 		.thumb-dialog-error { color: var(--error); min-height: 18px; }
-		.animated-thumb-card { width: min(520px, 92vw); }
+		.animated-thumb-card { width: min(480px, 92vw); gap: 10px; padding: 16px; }
 		.thumb-dialog-note.warning { color: #e6b35c; }
-		.animated-thumb-form { display: grid; gap: 12px; padding: 4px 0; }
+		.animated-thumb-card .thumb-dialog-note { font-size: 13px; }
+		.animated-thumb-form { display: grid; grid-template-columns: 96px minmax(0, 1fr); align-items: center; gap: 10px 14px; padding: 2px 0; }
 		.animated-thumb-label { color: var(--text-dim); }
-		.animated-thumb-range { display: flex; align-items: center; gap: 8px; }
+		.animated-thumb-range { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; }
 		.animated-thumb-range label { display: flex; align-items: center; gap: 6px; }
 		.animated-thumb-range input { width: 88px; }
-		.animated-thumb-quality { display: flex; align-items: center; justify-content: space-between; gap: 16px; color: var(--text-dim); }
+		.animated-thumb-quality { grid-column: 1 / -1; display: grid; grid-template-columns: 96px minmax(0, 1fr); align-items: center; gap: 14px; color: var(--text-dim); }
 		.animated-thumb-size { display: flex; align-items: center; gap: 7px; color: var(--text); }
-		.animated-thumb-size input { width: 108px; }
+		.animated-thumb-size input { width: 88px; }
+		.animated-thumb-form input[type="number"] {
+			box-sizing: border-box; height: 32px; padding: 4px 8px;
+			background: var(--panel-2); color: var(--text);
+			border: 1px solid var(--border); border-radius: 4px;
+		}
+		.animated-thumb-form input[type="number"]:focus { outline: none; border-color: var(--accent); }
+		.animated-thumb-card .thumb-dialog-actions { margin-top: 2px; }
 		/* 收窄下拉，避免在窄窗口下把右侧按钮挤到第二行（展开后的选项不受影响）*/
 		#toolbar #suffixSelect { max-width: 140px; }
 		#stage { position: absolute; inset: 0; display: flex; overflow: hidden; }
diff --git a/viewer/spine.html b/viewer/spine.html
index f3c0312..adb5a82 100644
--- a/viewer/spine.html
+++ b/viewer/spine.html
@@ -29,7 +29,7 @@
 			<span data-i18n="viewer.suffix">尾缀</span>
 			<select id="suffixSelect"></select>
 		</label>
-		<button id="groupThumbBtn" data-i18n="viewer.groupThumbnail" data-i18n-title="viewer.groupThumbnailTitle" title="为关联资源生成缩略图">为关联资源生成缩略图</button>
+		<button id="groupThumbBtn" data-i18n="viewer.groupThumbnail" data-i18n-title="viewer.groupThumbnailTitle" title="左键生成静帧缩略图，右键生成动画缩略图">为关联资源生成缩略图</button>
 		<button id="thumbBtn" data-i18n="viewer.thumbnail" data-i18n-title="viewer.thumbnailTitle" title="将当前帧设为当前素材的缩略图">设为当前素材缩略图</button>
 		<label id="verLabel" style="color: var(--text-dim);" data-i18n-title="viewer.versionTitle" title="Spine 版本"></label>
 		<button id="reloadBtn" title="重新加载目录" data-i18n-title="viewer.reloadTitle">↻</button>
@@ -1042,7 +1042,7 @@
 		}
 	}
 
-	async function generateGroupThumbnails() {
+	async function generateGroupThumbnails(animated = false) {
 		if (!skeleton || !renderer || !activeAssets) { setStatus(t('viewer.noSkeletonForThumb')); return; }
 		const groupThumbBtn = document.getElementById('groupThumbBtn');
 		groupThumbBtn.disabled = true;
@@ -1056,8 +1056,17 @@
 				if (rows.length && rows.every((row) => row.state === 'unavailable')) setStatus(t('viewer.groupNoTargets'), 4000);
 				return;
 			}
-			setStatus(t('viewer.generating'), Infinity);
-			const rendered = await renderCurrentFrameThumbnail();
+			let rendered;
+			const animation = (skeletonData.animations || [])[currentAnim];
+			if (animated && !isStaticAnimation && currentAnim !== SETUP_POSE_INDEX && animation && animationDuration(animation) > STATIC_EPSILON) {
+				const options = await confirmAnimatedThumbnail(animation);
+				if (!options) return;
+				setStatus(t('viewer.animatedGenerating', { current: 0, total: '…' }), Infinity);
+				rendered = await renderAnimatedThumbnail(animation, options);
+			} else {
+				setStatus(t('viewer.generating'), Infinity);
+				rendered = await renderCurrentFrameThumbnail();
+			}
 			const result = await groupThumbnails.applyThumbnailTargets({
 				targets,
 				initialSkipped: rows.length - targets.length,
@@ -1858,7 +1867,11 @@
 	document.getElementById('reloadBtn').addEventListener('click', () => {
 		window.location.reload();
 	});
-	document.getElementById('groupThumbBtn').addEventListener('click', generateGroupThumbnails);
+	document.getElementById('groupThumbBtn').addEventListener('click', () => generateGroupThumbnails());
+	document.getElementById('groupThumbBtn').addEventListener('contextmenu', (event) => {
+		event.preventDefault();
+		generateGroupThumbnails(true);
+	});
 	document.getElementById('thumbBtn').addEventListener('click', generateThumbnail);
 	document.getElementById('thumbBtn').addEventListener('contextmenu', (event) => {
 		event.preventDefault();