Youtube Thumbnail Design
YouTube thumbnail design with specific dimensions, contrast rules, and mobile preview...
Install
npx skills add inference-sh/skills --skill youtube-thumbnail-design -g -a claude-code -y- Repository
- inference-sh/skills795
- Category
- Design
- Updated
- 20d ago
- License
- See repository
- Context cost
- Mediumabout 2,189 tokens
- Runs scripts
- No, instructions only
What it does
YouTube thumbnail design with specific dimensions, contrast rules, and mobile preview optimization. Covers safe zones, text placement, face expression psychology, and A/B testing. Use for: YouTube thumbnails, video cover images, click-through optimization. Triggers: youtube thumbnail, thumbnail design, video thumbnail, click through rate, ctr optimization, youtube cover, video cover image, thumbnail maker, thumbnail tips, youtube design, video preview image
Install the belt CLI skill:
npx skills add belt-sh/cli
YouTube Thumbnail Design
Create high-CTR YouTube thumbnails with AI image generation via inference.sh CLI.
Quick Start
Requires inference.sh CLI (
belt). Install instructions
belt login
# Generate a thumbnail
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
}'
Specifications
| 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 |
The 120px Test
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.
