Install the belt CLI skill: YouTube Thumbnail Design Create high-CTR YouTube thumbnails with AI image generation via inference.sh CLI. Quick Start Requires inference.sh CLI ( ). Install instructions 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: 1. The mood/emotion (from colors and expressio…