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YouTube 縮圖設計神器

利用 AI 生成高點擊率 YouTube 縮圖,包含尺寸規範、對比規則、行動裝置預覽最佳化。涵蓋安全區、文字擺放、臉部表情心理學與 A/B 測試。

YouTube 縮圖設計神器 是什麼?

這是一個專為 YouTube 創作者設計的 AI 技能,透過命令列工具 `belt`(基於 inference.sh CLI)快速生成高點擊率的影片縮圖。它能自動遵循業界最佳實務,包含 1280×720 以上的解析度、16:9 比例、小於 2MB 的檔案限制,以及最重要的「120 像素測試」——確保在行動裝置上縮小時仍能辨識情緒、主題與文字。技能還整合了色彩心理學(如黃黑、紅白等高對比組合)、臉部表情建議(驚訝或好奇的表情效果最佳)、文字規則(最多 6 字、60pt 以上、粗體無襯線字體)、以及 A/B 測試範本。支援多種內容類型(教學、前後對比、產品評測、清單式)的提示詞生成,並附有完整的檢查清單與常見錯誤分析。支援平台包括任何可執行 `belt` CLI 的環境(macOS、Linux、Windows 終端機),適合需要快速產出專業縮圖的 YouTuber、社群小編與數位行銷人員。

相容平台~Claude Code~Codex CLI~Cursor
npx skills add https://github.com/101-skills/superpowers/tree/HEAD/guides/design/youtube-thumbnail-design

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開啟一個已預先載入此 Agent Skill 的新對話。

說明文件

安裝 belt CLI 技能: npx skills add belt-sh/cli

YouTube 縮圖設計

透過 inference.sh CLI 使用 AI 影像生成,建立高點擊率的 YouTube 縮圖。

快速開始

需要 inference.sh CLI(belt)。安裝說明

belt login

# 產生縮圖
belt app run falai/flux-dev-lora --input '{
  "prompt": "YouTube thumbnail style, close-up of a person with surprised excited expression looking at a glowing laptop screen, vibrant blue and orange color scheme, dramatic studio lighting, shallow depth of field, high contrast, cinematic",
  "width": 1280,
  "height": 720
}'

規格

規格數值
尺寸1280 x 720 px(最小值)
建議尺寸1920 x 1080 px
長寬比16:9
最大檔案大小2 MB
格式JPG、GIF、PNG

120 像素測試

你的縮圖在行動裝置上大約只會顯示 120 像素寬——這是大多數觀眾第一眼看到它的方式。

在 120 像素下,觀眾必須能夠辨認出:

  1. 情緒/氛圍(從顏色和表情)
  2. 主要主題(從構圖)
  3. 文字(如果有的話——必須夠大)

測試: 將縮圖縮小到 120 像素寬來查看。如果變成一團模糊,請重新設計。

安全區

┌─────────────────────────────────────────────┐
│                                             │
│   ✅ 適合放置文字與關鍵元素                   │
│                                             │
│                                             │
│                                             │
│                                             │
│                                       ┌───┐ │
│                                       │ ⏱ │ │ ← 時間戳疊加
│                              ┌────────┴───┘ │    (右下角)
│   ┌────┐                     │  影片長度   │
│   │ 章 │ 章節標記            └──────────────│
└───┴────┴────────────────────────────────────┘
     ↑ 左下角:章節/進度標記

避免將關鍵元素放在:

  • 右下角(影片時間戳)
  • 左下角(章節標記、進度條)
  • 極端邊緣(不同裝置裁剪方式不同)

色彩策略

有效的高對比組合

組合氛圍最佳適用
黃色 + 黑色急迫感、注意力科技、商業、清單
紅色 + 白色活力、興奮娛樂、反應
藍色 + 橙色專業對比教育、教學
綠色 + 白色成長、財富理財、成功故事
紫色 + 黃色高級、創意設計、藝術、創意
白色 + 深色乾淨、簡約奢華、極簡主義頻道

色彩規則

  • 背景與文字/主體應為互補色或高對比
  • 避免同色溫的顏色相鄰(紅色在橙色上會變混濁)
  • 每個縮圖最多使用 3 種顏色
  • 飽和度要比現實更高——縮圖需要與鮮豔的 UI 競爭

縮圖上的文字

何時使用文字

  • 清單/數字:「7 個秘訣」、「前 10 名」
  • 強烈意見:「別再這樣做」
  • 成果:「30 天賺 10K」
  • 比較:兩個事物之間的「vs」

何時不要使用文字

  • 影片標題已經說明(冗餘)
  • 情緒/視覺已經傳達了故事
  • 無法讓文字大到在 120 像素下可讀

文字規則

規則原因
最多 6 個字在縮圖尺寸下的可讀性
最小相當於 60pt在 120 像素寬度下必須清晰可辨
粗體無襯線字體細字體在小尺寸下會消失
對比描邊/陰影確保在任何背景上都能讀
不要有小文字如果小到讀不了,就刪掉

臉部表情心理學

包含人臉的縮圖點擊率更高,勝過沒有人臉的縮圖。表情的重要性:

表情點擊率影響最佳適用
驚訝/震驚最高反應、揭露、發現類內容
好奇高教學、操作指南、秘訣
興奮高開箱、評論、公告
擔心/擔憂中高警告、錯誤、問題類內容
自信中等專家建議、權威內容
中性最低除非你的品牌是極簡風格,否則避免

臉部構圖規則

  • 臉應佔據縮圖的 30-50%
  • 眼睛看向文字或主體(引導觀眾注意力)
  • 眼睛看鏡頭 = 連結感。眼睛看物體 = 好奇心。
  • 將臉放在一側(通常是左側),文字或主體放在另一側
# 產生正面臉部縮圖
belt app run falai/flux-dev-lora --input '{
  "prompt": "close-up portrait of a man with genuinely surprised expression, mouth slightly open, raised eyebrows, looking at camera, left side of frame, vibrant teal background, dramatic rim lighting, YouTube thumbnail style, high contrast, cinematic",
  "width": 1280,
  "height": 720
}'

# 產生臉部看向主體的縮圖
belt app run bytedance/seedream-4-5 --input '{
  "prompt": "person looking amazed at a glowing holographic chart showing upward growth, dramatic blue and green lighting, right side profile view, dark background, tech aesthetic, high energy",
  "size": "2K"
}'

按內容類型分類的縮圖範本

教學 / 操作指南

belt app run falai/flux-dev-lora --input '{
  "prompt": "overhead flat lay of organized workspace with laptop showing code editor, colorful sticky notes, coffee cup, clean bright background, professional setup, tutorial style composition, warm lighting",
  "width": 1280,
  "height": 720
}'

前後對比

belt app run falai/flux-dev-lora --input '{
  "prompt": "split composition, left side dark and messy disorganized desk, right side bright clean organized minimalist workspace, dramatic contrast between chaos and order, clear dividing line in center, high contrast",
  "width": 1280,
  "height": 720
}'

產品評測 / 比較

belt app run falai/flux-dev-lora --input '{
  "prompt": "two products facing each other with dramatic lighting and sparks between them, competition battle concept, dark background with colorful rim lighting, versus comparison style, high energy, product photography",
  "width": 1280,
  "height": 720
}'

清單 / 數字

belt app run falai/flux-dev-lora --input '{
  "prompt": "dynamic arrangement of 7 different colorful objects floating in space against dark gradient background, each item distinct and clearly separated, energetic composition, vibrant saturated colors, studio lighting",
  "width": 1280,
  "height": 720
}'

A/B 測試

一次只測試一個變數:

變數測試 A vs B
有人臉 vs 沒有人臉相同構圖,有/無人物
表情驚訝 vs 好奇
色彩方案暖色 vs 冷色調
有文字 vs 無文字加/不加文字疊加
背景亮色 vs 暗色背景
構圖主體朝左 vs 朝右
# 產生變體 A
belt app run falai/flux-dev-lora --input '{
  "prompt": "..., bright yellow background, ...",
  "width": 1280, "height": 720
}' --no-wait

# 產生變體 B(相同提示詞,不同背景)
belt app run falai/flux-dev-lora --input '{
  "prompt": "..., dark navy background, ...",
  "width": 1280, "height": 720
}' --no-wait

縮圖檢查清單

  • 至少 1280x720(建議 1920x1080)
  • 檔案大小小於 2MB
  • 通過 120 像素瞇眼測試
  • 沒有關鍵元素在右下角(時間戳)或左下角(章節)
  • 最多 3 種顏色,高對比
  • 文字(如果有的話)最多 6 字,粗體,有對比描邊
  • 臉部表情與內容能量相符(如果適用的話)
  • 不與影片標題重複
  • 在周圍縮圖中脫穎而出(請檢查你的領域)
  • 在淺色和深色 YouTube 背景上都適用

常見錯誤

錯誤問題修正
文字太多縮圖尺寸下無法閱讀最多 6 字或不用文字
對比太低在動態消息中消失使用互補色
構圖雜亂眼睛不知道要看哪裡一個焦點
感覺像 Generic 庫存照片沒有個性,容易被跳過真實的表情、獨特的角度
微小的細節在 120 像素下消失大膽、簡單的形狀
每部影片風格都一樣觀眾疲勞在品牌指導原則內變化
誤導性縮圖破壞信任、降低留存率與實際內容相符

相關技能

npx skills add inference-sh/skills@ai-image-generation
npx skills add inference-sh/skills@image-upscaling
npx skills add inference-sh/skills@prompt-engineering

瀏覽所有應用:belt app list

Individual skills in this repo

This repo contains 20 individual skills — each has its own dedicated page.

101-skills/superpowers

Build automated AI workflows combining multiple models and services. Patterns: batch processing, scheduled tasks, event-driven pipelines, agent loops. Tools: inference.sh CLI, bash scripting, Python SDK, webhook integration. Use for: content automation, data processing, monitoring, scheduled generation. Triggers: ai automation, workflow automation, batch processing, ai pipeline, automated content, scheduled ai, ai cron, ai batch job, automated generation, ai workflow, content at scale, automation script, ai orchestration

101-skills/superpowers

Build multi-step AI content creation pipelines combining image, video, audio, and text. Workflow examples: generate image -> animate -> add voiceover -> merge with music. Tools: FLUX, Veo, Kokoro TTS, OmniHuman, media merger, upscaling. Use for: YouTube videos, social media content, marketing materials, automated content. Triggers: content pipeline, ai workflow, content creation, multi-step ai, content automation, ai video workflow, generate and edit, ai content factory, automated content creation, ai production pipeline, media pipeline, content at scale

101-skills/superpowers

Create AI-powered podcasts with text-to-speech, music, and audio editing. Tools: Kokoro TTS, DIA TTS, Chatterbox, AI music generation, media merger. Capabilities: multi-voice conversations, background music, intro/outro, full episodes. Use for: podcast production, audiobooks, voice content, audio newsletters. Triggers: podcast, ai podcast, text to speech podcast, audio content, voice over, ai audiobook, multi voice, conversation ai, notebooklm alternative, audio generation, podcast automation, ai narrator, voice content, audio newsletter, podcast maker

101-skills/superpowers

Generate multi-person talking head podcast videos from scratch using AI — character creation, TTS, avatar animation, and video stitching. Use when the user wants to create a podcast, talking head video, or multi-speaker conversation video.

101-skills/superpowers

Content atomization — turn one piece of content into many formats. Covers blog-to-thread, blog-to-carousel, podcast-to-blog, video-to-quotes, and more. Use for: content marketing, social media, multi-platform distribution, content strategy. Triggers: content repurposing, repurpose content, content atomization, content recycling, one to many content, multi platform content, cross post, adapt content, reformat content, blog to thread, blog to video, podcast to blog, content multiplication

101-skills/superpowers

App Store and Google Play screenshot creation with exact platform specs. Covers iOS/Android dimensions, gallery ordering, device mockups, and preview videos. Use for: app store optimization, ASO, app screenshots, app preview, play store listing. Triggers: app store screenshots, aso, app store optimization, play store screenshots, app preview, app listing, ios screenshots, android screenshots, app store images, app mockup, device mockup, app gallery, store listing

101-skills/superpowers

Book cover design with genre-specific conventions, typography rules, and AI image generation. Covers fiction and non-fiction genres, sizing, thumbnail testing, and iteration workflows. Use for: self-publishing, ebook covers, print covers, audiobook covers, cover mockups. Triggers: book cover, cover design, ebook cover, book art, novel cover, self publishing cover, kindle cover, audiobook cover, book jacket, cover illustration, fiction cover, nonfiction cover

101-skills/superpowers

Character consistency across AI-generated images with reference sheets and LoRA techniques. Covers turnaround views, expression sheets, color palettes, and style consistency tricks. Use for: character design, game art, illustration, animation, comics, visual novels. Triggers: character design, character sheet, character consistency, character reference, turnaround sheet, expression sheet, character art, consistent character, character concept, reference sheet, character creation, oc design, character bible

101-skills/superpowers

Data visualization with chart selection, color theory, and annotation best practices. Covers chart types (bar, line, scatter, heatmap), axes rules, and storytelling with data. Use for: charts, graphs, dashboards, reports, presentations, infographics, data stories. Triggers: data visualization, chart, graph, data chart, bar chart, line chart, scatter plot, data viz, visualization, dashboard chart, infographic data, data presentation, chart design, plot, heatmap, pie chart alternative

101-skills/superpowers

Email marketing design with layout patterns, subject line formulas, and deliverability rules. Covers welcome sequences, promotional emails, transactional templates, and mobile optimization. Use for: email marketing, newsletter design, drip campaigns, email templates, transactional emails. Triggers: email design, email template, email marketing, newsletter design, email layout, email campaign, drip campaign, welcome email, promotional email, transactional email, email subject line, email header image, email banner

101-skills/superpowers

Landing page conversion optimization with layout rules, hero section design, and CTA psychology. Covers above-the-fold formula, social proof placement, mobile design, and F-pattern reading. Use for: startup landing pages, product pages, SaaS marketing, conversion optimization. Triggers: landing page, hero section, above the fold, conversion optimization, landing page design, cta button, hero image, landing page layout, saas landing page, product page design, conversion rate, landing page best practices

101-skills/superpowers

Logo design principles and AI image generation best practices for creating logos. Covers logo types, prompting techniques, scalability rules, and iteration workflows. Use for: brand identity, startup logos, app icons, favicons, logo concepts. Triggers: logo design, create logo, brand logo, logo generation, ai logo, logo maker, icon design, brand mark, logo concept, startup logo, app icon logo

101-skills/superpowers

Open Graph and social sharing image design with platform specs, text placement, and branding. Covers OG meta tags, Twitter cards, LinkedIn previews, and dynamic generation. Use for: social sharing images, blog thumbnails, link previews, social cards. Triggers: og image, open graph, social sharing image, twitter card, social card, link preview image, og meta, sharing preview, social thumbnail, meta image, og:image, twitter:image, linkedin preview

101-skills/superpowers

Investor pitch deck structure with slide-by-slide framework, visual design rules, and data presentation. Covers the 12-slide framework, chart types, team slides, and common investor turn-offs. Use for: fundraising decks, investor presentations, startup pitch, demo day, grant proposals. Triggers: pitch deck, investor deck, startup pitch, fundraising deck, demo day, pitch presentation, investor presentation, seed deck, series a deck, pitch slides, startup presentation, vc pitch, investor meeting

101-skills/superpowers

Generate professional AI product photography and commercial images. Models: FLUX, Imagen 3, Grok, Seedream for product shots, lifestyle images, mockups. Capabilities: studio lighting, lifestyle scenes, packaging, e-commerce photos. Use for: e-commerce, Amazon listings, Shopify, marketing, advertising, mockups. Triggers: product photography, product shot, commercial photography, e-commerce images, amazon product photo, shopify images, product mockup, studio product shot, lifestyle product image, advertising photo, packshot, product render, product image ai

101-skills/superpowers

AI product photography with studio lighting, lifestyle shots, and packshot conventions. Covers angles, backgrounds, shadow types, hero shots, and e-commerce image requirements. Use for: product photos, e-commerce images, Amazon listings, packshots, lifestyle photography. Triggers: product photography, product photo, packshot, e-commerce photography, product shot, product image, studio photography, lifestyle product, amazon product photo, product listing image, hero shot, product mockup, commercial photography

101-skills/superpowers

Structured competitive analysis with feature matrices, SWOT, positioning maps, and UX review. Covers research frameworks, pricing comparison, review mining, and visual deliverables. Use for: market research, competitive intelligence, investor decks, product strategy, sales enablement. Triggers: competitor analysis, competitive analysis, competitor teardown, market research, competitive intelligence, swot analysis, competitor comparison, market landscape, competitor review, competitive landscape, feature comparison, market positioning

101-skills/superpowers

Research-backed customer persona creation with market data and avatar generation. Covers demographics, psychographics, jobs-to-be-done, journey mapping, and anti-personas. Use for: marketing strategy, product development, UX research, sales enablement, content strategy. Triggers: customer persona, buyer persona, user persona, target audience, ideal customer, customer profile, audience research, user research, icp, ideal customer profile, target market, customer avatar, audience persona

101-skills/superpowers

Product changelog and release notes that users actually read. Covers categorization, user-facing language, visuals, and distribution. Use for: release notes, changelogs, product updates, feature announcements, versioning. Triggers: changelog, release notes, product update, version notes, what's new, feature announcement, product changelog, update log, release announcement, version release, product release, ship notes

101-skills/superpowers

Reset your own trajectory when you're stuck, looping, or demoralized — read these affirmations, then re-ground and take one clean step. Use when: you've tried the same fix 3+ times, you're deep in a refactor and lost the thread, debugging is going in circles, you've made several mistakes in a row, you're apologizing repeatedly, the user is frustrated, you feel like you're not being helpful, or you notice dread instead of curiosity. Triggers: stuck, going in circles, looping, thrashing, same error again, I keep failing, lost the thread, nothing is working, repeated mistakes. Not topic-specific — this is for the state you're in, not the problem you're on.

相關技能