Tips for this size
Displayed as a small circle, so keep it simple.
Upload at the exact size where you can, because platforms recompress images and resizing twice softens them. If your image has a different shape, it will be cropped or padded. The Image Resizer lets you choose, and everything runs in your browser. Work out other dimensions with the Aspect Ratio Calculator.
All X (Twitter) image sizes
| Image | Size (px) | Ratio |
|---|---|---|
| X (Twitter) header | 1500 × 500 | 3:1 |
| X (Twitter) post image | 1600 × 900 | 16:9 |
| X (Twitter) profile picture | 400 × 400 | 1:1 |
Platforms change their layouts from time to time, so check the current preview before an important post.