YouTube Thumbnail, 4K specs
| Spec | Details |
|---|---|
| Size | 3840 × 2160 pixels |
| Aspect ratio | 16:9 |
| File size | Under 2 MB from a phone, 50 MB from a computer. |
| Shown as | A rectangle |
YouTube now recommends thumbnails up to 3840 × 2160 so they look sharp on TVs and big monitors. Export as JPG to stay under the phone upload limit if you post from your phone.
Other YouTube sizes
| Image | Size | Ratio |
|---|---|---|
| Thumbnail | 1280 × 720 | 16:9 |
| Channel banner | 2560 × 1440 | 16:9 |
| Profile picture | 800 × 800 | 1:1 |
| Shorts thumbnail | 1080 × 1920 | 9:16 |
Make one that fits
The social media image resizer opens with this size selected. Drop in your image, click the part that must stay in frame, and download it at exactly 3840 × 2160. It runs in your browser, so the image is never uploaded.