YouTube image sizes
YouTube recommends 3840 × 2160 (16:9) for a video thumbnail and 2160 × 3840 (9:16) for a Shorts thumbnail, at least 640 px. A channel banner should be 2560 × 1440, with text and logos inside the middle 1235 × 338.
| Format | Pixels | Shape |
|---|---|---|
| Video thumbnailThe picture shown before a video plays (16:9) | 3840 × 2160 | 16:9 |
| Shorts thumbnailThe cover of a Short (9:16) | 2160 × 3840 | 9:16 |
| Channel bannerThe banner across the top of your channel | 2560 × 1440 | 16:9 |