# YouTube — Thumbnails (Image)

YouTube “image” learning = **custom thumbnail** + channel art context.

## Specs

| Item | Recommendation |
|------|----------------|
| Thumbnail | 1280×720 (16:9), JPG/PNG, under 2MB |
| Safe zone | Faces/text not cropped on mobile |
| Style | High contrast, readable at small size |

## Rules

- One focal subject
- Max 3–5 words on thumbnail text
- Match title promise; avoid misleading imagery

## RAG use

Query: “YouTube thumbnail brief for product demo targeting IT managers.”