YouTube Thumbnail Design

YouTube缩略图设计

Create high-CTR YouTube thumbnails with AI image generation via inference.sh CLI.

通过inference.sh CLI工具，借助AI图像生成功能制作高点击率（CTR）的YouTube缩略图。

Quick Start

快速开始

bash

curl -fsSL https://cli.inference.sh | sh && infsh login

bash

curl -fsSL https://cli.inference.sh | sh && infsh login

Generate a thumbnail

infsh 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 }'

undefined

infsh 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 }'

undefined

Specifications

规格参数

Spec	Value
Dimensions	1280 x 720 px (minimum)
Recommended	1920 x 1080 px
Aspect ratio	16:9
Max file size	2 MB
Formats	JPG, GIF, PNG

规格	参数
尺寸	1280 x 720像素（最小值）
推荐尺寸	1920 x 1080像素
宽高比	16:9
最大文件大小	2 MB
支持格式	JPG, GIF, PNG

The 120px Test

120像素测试

Your thumbnail appears at roughly 120px wide on mobile — that's how most viewers first see it.

At 120px, viewers must be able to identify:

The mood/emotion (from colors and expression)
The general subject (from composition)
The text (if any — only if large enough)

Test: view your thumbnail at 120px width. If it's a muddy blur, redesign.

你的缩略图在移动端显示时宽度约为120像素——这是大多数观众首次看到它的尺寸。

在120像素尺寸下，观众必须能够识别出：

情绪氛围（从色彩和表情判断）
大致主题（从构图判断）
文字内容（如果有——必须足够大）

测试方法： 将你的缩略图缩放到120像素宽度查看。如果画面模糊不清，就需要重新设计。

Safe Zones

安全区域

┌─────────────────────────────────────────────┐
│                                             │
│   ✅ SAFE FOR TEXT AND KEY ELEMENTS         │
│                                             │
│                                             │
│                                             │
│                                             │
│                                       ┌───┐ │
│                                       │ ⏱ │ │ ← Timestamp overlay
│                              ┌────────┴───┘ │    (bottom-right)
│   ┌────┐                     │  DURATION    │
│   │ CH │ Chapter marker      └──────────────│
└───┴────┴────────────────────────────────────┘
     ↑ Bottom-left: chapter/progress markers

Avoid placing critical elements in:

Bottom-right corner (video duration timestamp)
Bottom-left corner (chapter markers, progress bar)
Extreme edges (cropping varies by device)

┌─────────────────────────────────────────────┐
│                                             │
│   ✅ SAFE FOR TEXT AND KEY ELEMENTS         │
│                                             │
│                                             │
│                                             │
│                                             │
│                                       ┌───┐ │
│                                       │ ⏱ │ │ ← 时间戳位置
│                              ┌────────┴───┘ │   （右下角）
│   ┌────┐                     │  DURATION    │
│   │ CH │ Chapter marker      └──────────────│
└───┴────┴────────────────────────────────────┘
     ↑ 左下角：章节标记、进度条位置

请勿将关键元素放置在以下区域：

右下角（视频时长戳位置）
左下角（章节标记、进度条位置）
边缘极端区域（不同设备的裁剪范围不同）

Color Strategy

色彩策略

High-Contrast Pairs That Work

实用高对比度色彩组合

Combination	Mood	Best For
Yellow + Black	Urgency, attention	Tech, business, lists
Red + White	Energy, excitement	Entertainment, reactions
Blue + Orange	Professional contrast	Education, tutorials
Green + White	Growth, money	Finance, success stories
Purple + Yellow	Premium, creative	Design, art, creativity
White + Dark	Clean, minimal	Luxury, minimalist channels

色彩组合	氛围	适用场景
黄+黑	紧迫感、吸睛	科技、商业、清单类内容
红+白	活力、兴奋	娱乐、反应类内容
蓝+橙	专业感、对比强烈	教育、教程类内容
绿+白	成长、财富	金融、成功故事类内容
紫+黄	高端、创意	设计、艺术、创意类内容
白+深色	简洁、极简	奢侈品、极简风格频道

Color Rules

色彩规则

Background and text/subject should be complementary or high-contrast
Avoid same-temperature colors touching (red on orange = mud)
Use 3 colors maximum per thumbnail
Saturate more than real life — thumbnails compete with bright UI

背景与文字/主体应使用互补色或高对比度色彩
避免同色系色彩相邻（如红配橙会显得浑浊）
每个缩略图最多使用3种颜色
饱和度要高于真实场景——缩略图需要在明亮的界面中脱颖而出

Text on Thumbnails

缩略图文字使用指南

When to Use Text

适合添加文字的场景

Lists/numbers: "7 Tips", "Top 10"
Strong opinions: "STOP Doing This"
Results: "$10K in 30 Days"
Comparisons: "vs" between two things

清单/数字类内容："7个技巧"、"Top 10"
强烈观点类内容："别再这么做了"
成果展示类内容："30天赚1万美元"
对比类内容：在两个事物之间添加"vs"

When NOT to Use Text

不适合添加文字的场景

The video title already says it (redundant)
The emotion/visual tells the story
You can't make it large enough to read at 120px

视频标题已经包含相同信息（冗余）
画面情绪/视觉元素已经能传达主题
无法将文字放大到120像素尺寸下仍清晰可读

Text Rules

文字使用规则

Rule	Reason
Max 6 words	Readability at thumbnail size
Min 60pt equivalent	Must be legible at 120px width
Bold sans-serif font	Thin fonts disappear at small sizes
Contrast stroke/shadow	Ensures readability on any background
No small text	If it's not readable small, cut it

规则	原因
最多6个单词	保证缩略图尺寸下的可读性
最小等效60号字体	在120像素宽度下必须清晰可辨
粗体无衬线字体	纤细字体在小尺寸下会消失
添加对比描边/阴影	确保在任何背景下都可读
无小文字	如果小尺寸下不可读，就删掉它

Face Expression Psychology

面部表情心理学

Thumbnails with faces get higher CTR than faceless thumbnails. Expression matters:

Expression	CTR Impact	Best For
Surprise/shock	Highest	Reaction, reveal, discovery content
Curiosity	High	Tutorial, how-to, tips
Excitement	High	Unboxing, reviews, announcements
Concern/worry	Medium-high	Warning, mistake, problem content
Confidence	Medium	Expert advice, authority content
Neutral	Lowest	Avoid unless your brand is minimalist

有人物面部的缩略图点击率比无面部的缩略图更高。表情选择至关重要：

表情	点击率影响	适用场景
惊讶/震惊	最高	反应类、揭秘类、发现类内容
好奇	高	教程、指南、技巧类内容
兴奋	高	开箱、评测、公告类内容
担忧/焦虑	中高	警告、错误、问题解决类内容
自信	中	专家建议、权威内容
中性	最低	除非品牌走极简风格，否则避免使用

Face Composition Rules

面部构图规则

Face should fill 30-50% of the thumbnail
Eyes looking toward the text or subject (directs viewer attention)
Eyes looking at camera = connection. Eyes looking at object = curiosity.
Place face on one side (usually left), text or subject on the other

bash

undefined

面部应占据缩略图的30-50%
视线应朝向文字或主体（引导观众注意力）
直视镜头：建立情感连接。看向物体：引发好奇心。
将面部放在一侧（通常是左侧），文字或主体放在另一侧

bash

undefined

Generate a face-forward thumbnail

infsh 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 }'

Generate a face-looking-at-subject thumbnail

infsh 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" }'

undefined

infsh 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" }'

undefined

Thumbnail Patterns by Content Type

按内容类型分类的缩略图模板

Tutorial / How-To

教程/指南类

bash

infsh 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
}'

bash

infsh 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
}'

Before/After

前后对比类

bash

infsh 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
}'

bash

infsh 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
}'

Product Review / Comparison

产品评测/对比类

bash

infsh 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
}'

bash

infsh 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
}'

Listicle / Number

清单/数字类

bash

infsh 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
}'

bash

infsh 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 Testing

A/B测试

Test one variable at a time:

Variable	Test A vs B
Face vs No face	Same composition, with/without person
Expression	Surprise vs curiosity
Color scheme	Warm vs cool palette
Text vs No text	With/without text overlay
Background	Bright vs dark
Composition	Left-facing vs right-facing subject

bash

undefined

每次仅测试一个变量：

变量	A/B测试内容
有人脸vs无脸	相同构图，添加/移除人物
表情	惊讶vs好奇
色彩方案	暖色调vs冷色调
有文字vs无文字	添加/移除文字层
背景	亮色vs暗色
构图	主体朝左vs朝右

bash

undefined

Generate variant A

infsh app run falai/flux-dev-lora --input '{ "prompt": "..., bright yellow background, ...", "width": 1280, "height": 720 }' --no-wait

Generate variant B (same prompt, different background)

infsh app run falai/flux-dev-lora --input '{ "prompt": "..., dark navy background, ...", "width": 1280, "height": 720 }' --no-wait

undefined

infsh app run falai/flux-dev-lora --input '{ "prompt": "..., dark navy background, ...", "width": 1280, "height": 720 }' --no-wait

undefined

Thumbnail Checklist

缩略图检查清单

Common Mistakes

常见错误

Mistake	Problem	Fix
Too much text	Unreadable at thumbnail size	Max 6 words or no text
Low contrast	Disappears in the feed	Use complementary colors
Cluttered composition	Eye doesn't know where to look	One focal point
Generic stock photo feel	No personality, gets skipped	Authentic expressions, unique angles
Tiny details	Lost at 120px	Bold, simple shapes
Same style every video	Viewer fatigue	Vary within brand guidelines
Misleading thumbnail	Kills trust, hurts retention	Match the actual content

错误	问题	解决方法
文字过多	缩略图尺寸下不可读	最多6个单词或不添加文字
对比度低	在信息流中容易被忽略	使用互补色
构图杂乱	观众不知道看哪里	只保留一个视觉焦点
通用图库风格	缺乏个性，容易被跳过	使用真实表情、独特角度
细节过小	在120像素下丢失	使用大胆、简洁的形状
风格一成不变	观众产生审美疲劳	在品牌框架内尝试变化
缩略图误导	失去信任，降低留存率	与实际内容匹配

youtube-thumbnail-design

Original

Translation

YouTube Thumbnail Design

YouTube缩略图设计

Quick Start

快速开始

Generate a thumbnail

Generate a thumbnail

Specifications

规格参数

The 120px Test

120像素测试

Safe Zones

安全区域

Color Strategy

色彩策略

High-Contrast Pairs That Work

实用高对比度色彩组合

Color Rules

色彩规则

Text on Thumbnails

缩略图文字使用指南

When to Use Text

适合添加文字的场景

When NOT to Use Text

不适合添加文字的场景

Text Rules

文字使用规则

Face Expression Psychology

面部表情心理学

Face Composition Rules

面部构图规则

Generate a face-forward thumbnail

Generate a face-forward thumbnail

Generate a face-looking-at-subject thumbnail

Generate a face-looking-at-subject thumbnail

Thumbnail Patterns by Content Type

按内容类型分类的缩略图模板

Tutorial / How-To

教程/指南类

Before/After

前后对比类

Product Review / Comparison

产品评测/对比类

Listicle / Number

清单/数字类

A/B Testing

A/B测试

Generate variant A

Generate variant A

Generate variant B (same prompt, different background)

Generate variant B (same prompt, different background)

Thumbnail Checklist

缩略图检查清单

Common Mistakes

常见错误

Related Skills

相关技能