Short answer: 1280 × 720 px, ratio 16:9, under 2 MB.
| Requirement | Value |
|---|---|
| Recommended size | 1280 × 720 px |
| Minimum width | 640 px |
| Aspect ratio | 16:9 |
| Max file size | 2 MB |
| Formats | JPG, PNG, GIF, BMP |
Keep the bottom-right corner clear
YouTube shows the video length in the lower-right corner. Place text and faces elsewhere.
Over 2 MB?
Download as JPG instead of PNG — it is usually 5–10 times smaller.
Read our 12 thumbnail design tips.