Youtube Thumbnail Design

Creates YouTube thumbnails optimized for mobile viewing and click-through rates using AI image generation. Includes the crucial 120px mobile visibility test, safe zone mapping to avoid YouTube's UI overlays, and psychology-based face expression guidelines. Generates thumbnails at proper 1280x720 specs with high-contrast color schemes and readable text sizing. The before/after split compositions and A/B testing prompts are solid for content creators who need to iterate quickly. Covers the technical stuff most designers miss like timestamp overlay zones and mobile-first design principles that actually impact CTR.

install copies · 90 days. Times the install command was copied on this site in the last 90 days, bots filtered.: 13
skills.sh installs: 6.4K
GitHub stars: 173

View on GitHub

Install

$ npx -y skills add inferen-sh/skills --skill youtube-thumbnail-design --agent claude-code

Installs into .claude/skills of the current project.

Files

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
}'