Book Cover Design
Create genre-appropriate book covers with AI image generation via inference.sh CLI.
Quick Start
CODEBLOCK0
Install note: The install script only detects your OS/architecture, downloads the matching binary from dist.inference.sh, and verifies its SHA-256 checksum. No elevated permissions or background processes. Manual install & verification available.
Genre Conventions
Readers judge books by covers. Matching genre expectations is critical — a romance reader will skip a cover that looks like sci-fi, regardless of content.
Fiction
| Genre | Palette | Imagery | Typography | Mood |
|---|
| Thriller/Mystery | Dark (black, navy, blood red) | Lone figure, urban scenes, shadows | Bold sans-serif, all caps | Tense, ominous |
| Romance |
Warm (pink, red, gold, soft purple) | Couples, flowers, scenic backdrops | Script/cursive, elegant serif | Passionate, dreamy |
|
Sci-Fi | Cool (blue, teal, purple, silver) | Space, tech, geometric shapes | Clean sans-serif, futuristic | Vast, technological |
|
Fantasy | Rich saturated (emerald, crimson, gold) | Swords, magic, landscapes, creatures | Decorative serif, ornamental | Epic, magical |
|
Literary Fiction | Muted, sophisticated | Abstract, minimal, symbolic | Elegant serif, understated | Thoughtful, artistic |
|
Horror | Dark with high contrast pops | Faces, shadows, isolation, decay | Distressed, bold, dripping | Dread, unease |
|
Historical | Sepia, muted period-accurate | Period clothing, architecture, artifacts | Classical serif | Nostalgic, authentic |
Non-Fiction
| Category | Style | Imagery | Typography |
|---|
| Business/Self-help | Clean, bold, 2-3 colors | Minimal or none, icon optional | Large bold sans-serif title |
| Memoir |
Personal, warm | Author photo or atmospheric scene | Mix of serif and sans |
|
Science/Academic | Professional, structured | Diagrams, abstract visuals | Clean serif, structured layout |
|
Cookbook | Appetizing, bright | Hero food photograph | Warm, inviting fonts |
|
Travel | Vibrant, aspirational | Destination photography | Adventure-style fonts |
Cover Sizing
Print (Trim Sizes)
| Format | Dimensions | Common For |
|---|
| Mass market paperback | 4.25 x 6.87" | Genre fiction |
| Trade paperback |
5.5 x 8.5" | Most fiction/non-fiction |
| Standard | 6 x 9" | Non-fiction, textbooks |
| Large format | 7 x 10" | Coffee table, art books |
Digital
| Platform | Cover Size | Aspect Ratio |
|---|
| Amazon Kindle | 2560 x 1600 px (min 1000 x 625) | 1.6:1 |
| Apple Books |
1400 x 1873 px minimum | ~3:4 |
| General ebook | 2500 x 3750 px | 2:3 |
Spine Width
Approximate: page count / 400 = spine width in inches (varies by paper stock).
- - 200 pages ≈ 0.5" spine
- 400 pages ≈ 1.0" spine
Layout Zones
CODEBLOCK1
The Thumbnail Test
Your cover will be seen at 80x120px on Amazon, 60x90px in search results, and ~40x60px on mobile grids.
At thumbnail size, readers must be able to identify:
- 1. The genre (from color and composition)
- The title (if large enough)
- The mood (from imagery)
Test: shrink your cover to 80px wide. If you can't read the title or identify the genre, redesign.
Prompting by Genre
Thriller
CODEBLOCK2
Romance
CODEBLOCK3
Sci-Fi
CODEBLOCK4
Fantasy
CODEBLOCK5
Non-Fiction / Business
CODEBLOCK6
Typography Rules
AI cannot render text reliably. Generate the cover art/background with AI, then add typography in a design tool.
Title Hierarchy
- 1. Title — largest, most prominent, top 1/3 of cover
- Subtitle — smaller, below title or at bottom
- Author name — bottom of cover, size depends on author recognition
Font Pairing by Genre
- - Thriller: bold sans-serif title + condensed sans-serif author
- Romance: script/cursive title + elegant serif author
- Sci-Fi: geometric sans-serif for both
- Fantasy: decorative/medieval serif title + clean serif author
- Business: heavy bold sans-serif title + light sans-serif subtitle
Iteration Workflow
CODEBLOCK7
Common Mistakes
| Mistake | Problem | Fix |
|---|
| Wrong genre signals | Readers skip it | Study bestsellers in your genre |
| Title too small |
Invisible at thumbnail | Title should fill top 1/3 |
| Too much detail | Muddy at small sizes | Simplify, use negative space |
| AI-generated text | Garbled letters | Add text in design tool |
| Centered everything | Static, boring | Use asymmetry intentionally |
| Following trends blindly | Dates quickly | Classic genre conventions endure |
Checklist
- - [ ] Genre instantly recognizable from colors and composition
- [ ] Title readable at 80px wide (thumbnail test)
- [ ] No AI-generated text on cover
- [ ] Works in both color and greyscale
- [ ] Correct dimensions for target platform
- [ ] Author name visible but not competing with title
- [ ] High resolution (300 DPI for print, 2500px+ for digital)
- [ ] Spine text readable (for print)
Related Skills
CODEBLOCK8
Browse all apps: INLINECODE1
书籍封面设计
通过inference.sh CLI使用AI图像生成技术,创建符合体裁要求的书籍封面。
快速开始
bash
curl -fsSL https://cli.inference.sh | sh && infsh login
生成惊悚小说封面概念图
infsh app run falai/flux-dev-lora --input {
prompt: dark moody book cover art, lone figure standing at end of a rain-soaked alley, dramatic chiaroscuro lighting, noir atmosphere, cinematic, high contrast shadows,
width: 832,
height: 1248
}
安装说明: 安装脚本仅检测您的操作系统/架构,从dist.inference.sh下载匹配的二进制文件,并验证其SHA-256校验和。无需提升权限或后台进程。也可使用手动安装和验证方式。
体裁惯例
读者通过封面判断书籍。符合体裁预期至关重要——无论内容如何,浪漫小说读者会跳过看起来像科幻小说的封面。
虚构类
| 体裁 | 色调 | 图像 | 字体 | 氛围 |
|---|
| 惊悚/悬疑 | 暗色(黑色、海军蓝、血红) | 孤独身影、城市场景、阴影 | 粗体无衬线,全大写 | 紧张、不祥 |
| 浪漫 |
暖色(粉色、红色、金色、柔紫) | 情侣、花卉、风景背景 | 手写体/草书,优雅衬线 | 激情、梦幻 |
|
科幻 | 冷色(蓝色、青绿、紫色、银色) | 太空、科技、几何图形 | 简洁无衬线,未来感 | 宏大、科技感 |
|
奇幻 | 浓郁饱和(翡翠绿、深红、金色) | 剑、魔法、风景、生物 | 装饰性衬线,华丽 | 史诗、魔幻 |
|
纯文学 | 柔和、精致 | 抽象、极简、象征性 | 优雅衬线,低调 | 深思、艺术性 |
|
恐怖 | 暗色配高对比亮点 | 面孔、阴影、孤立、腐朽 | 破损、粗体、滴落效果 | 恐惧、不安 |
|
历史 | 棕褐色、符合时代的柔和色 | 时代服饰、建筑、文物 | 古典衬线 | 怀旧、真实 |
非虚构类
| 类别 | 风格 | 图像 | 字体 |
|---|
| 商业/自助 | 简洁、粗体、2-3色 | 极简或无,可选图标 | 大号粗体无衬线标题 |
| 回忆录 |
个人化、温暖 | 作者照片或氛围场景 | 衬线与无衬线混合 |
|
科学/学术 | 专业、结构化 | 图表、抽象视觉 | 简洁衬线,结构化布局 |
|
食谱 | 诱人、明亮 | 主菜照片 | 温暖、亲切的字体 |
|
旅行 | 鲜艳、令人向往 | 目的地摄影 | 冒险风格字体 |
封面尺寸
印刷版(裁切尺寸)
| 格式 | 尺寸 | 常见用途 |
|---|
| 大众市场平装 | 4.25 x 6.87英寸 | 类型小说 |
| 贸易平装 |
5.5 x 8.5英寸 | 大多数虚构/非虚构类 |
| 标准 | 6 x 9英寸 | 非虚构、教科书 |
| 大尺寸 | 7 x 10英寸 | 咖啡桌书、艺术书籍 |
数字版
| 平台 | 封面尺寸 | 宽高比 |
|---|
| Amazon Kindle | 2560 x 1600像素(最小1000 x 625) | 1.6:1 |
| Apple Books |
最小1400 x 1873像素 | ~3:4 |
| 通用电子书 | 2500 x 3750像素 | 2:3 |
书脊宽度
近似值:页数 / 400 = 书脊宽度(英寸)(因纸张类型而异)。
- - 200页 ≈ 0.5英寸书脊
- 400页 ≈ 1.0英寸书脊
布局区域
┌─────────────────────────┐
│ 标题区域 │ ← 顶部1/3:标题必须在此处可读
│ (最大文字) │ 这是缩略图中显示的部分
│ │
│ │
│ 主图像区域 │ ← 中部:核心视觉/插图
│ │ 情感钩子
│ │
│ │
│ 副标题/作者区域 │ ← 底部:作者姓名、副标题
│ │ 较小文字,缩略图中不太关键
└─────────────────────────┘
缩略图测试
您的封面在Amazon上将以80x120像素显示,在搜索结果中为60x90像素,在移动网格中约为40x60像素。
在缩略图尺寸下,读者必须能够识别:
- 1. 体裁(通过颜色和构图)
- 标题(如果足够大)
- 氛围(通过图像)
测试: 将封面缩小至80像素宽。如果无法阅读标题或识别体裁,请重新设计。
按体裁提示
惊悚
bash
infsh app run falai/flux-dev-lora --input {
prompt: dark cinematic book cover scene, silhouette of a person standing before a foggy bridge at night, single streetlamp casting long shadows, noir atmosphere, high contrast, desaturated blue tint, dramatic tension,
width: 832,
height: 1248
}
浪漫
bash
infsh app run bytedance/seedream-4-5 --input {
prompt: romantic soft-focus scene, couple silhouetted against golden sunset on a beach, warm pink and gold tones, bokeh lights, dreamy atmosphere, soft pastel sky, intimate mood,
size: 2K
}
科幻
bash
infsh app run falai/flux-dev-lora --input {
prompt: science fiction book cover art, massive space station orbiting a ringed planet, deep blue and teal color palette, stars and nebula background, hard sci-fi aesthetic, cinematic scale, clean geometric architecture,
width: 832,
height: 1248
}
奇幻
bash
infsh app run xai/grok-imagine-image-pro --input {
prompt: epic fantasy book cover illustration, ancient stone castle on a cliff overlooking a misty valley, magical aurora in the sky, rich emerald and gold colors, detailed environment, sense of wonder and adventure,
aspect_ratio: 2:3
}
非虚构/商业
bash
infsh app run falai/flux-dev-lora --input {
prompt: minimal abstract book cover background, clean gradient from deep navy to white, subtle geometric pattern, professional and modern, negative space, corporate aesthetic,
width: 832,
height: 1248
}
字体排版规则
AI无法可靠地渲染文字。 使用AI生成封面艺术/背景,然后在设计工具中添加字体排版。
标题层级
- 1. 标题 — 最大、最突出,位于封面顶部1/3
- 副标题 — 较小,位于标题下方或底部
- 作者姓名 — 封面底部,大小取决于作者知名度
按体裁字体搭配
- - 惊悚:粗体无衬线标题 + 紧凑无衬线作者名
- 浪漫:手写体/草书标题 + 优雅衬线作者名
- 科幻:两者均使用几何无衬线
- 奇幻:装饰性/中世纪衬线标题 + 简洁衬线作者名
- 商业:厚重粗体无衬线标题 + 轻量无衬线副标题
迭代工作流程
bash
1. 在不同模型上生成5个以上概念
infsh app run falai/flux-dev-lora --input {prompt: ..., width: 832, height: 1248} --no-wait
infsh app run bytedance/seedream-4-5 --input {prompt: ...} --no-wait
infsh app run xai/grok-imagine-image-pro --input {prompt: ..., aspect_ratio: 2:3} --no-wait
2. 使用图像到图像编辑优化最佳概念
infsh app run bytedance/seededit-3-0-i2i --input {
prompt: make the sky more dramatic