Twitter / X · Post image
approx.
Jordan Blake@jordanblake · 2h
New campaign is live. Motion made all the difference this quarter.
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The highlighted slot is where your 1600 × 900px asset will go — click it to upload.
Twitter / X Post Image Size
1600 × 900px · 16:9
1600 × 900px (16:9) previews best in-timeline without X's automatic crop kicking in.
- Recommended size
- 1600 × 900px
- Aspect ratio
- 16:9
- File types
- JPG, PNG, GIF, WEBP
- Max file size
- 5MB
How it crops
Images that aren't already 16:9 go through an automatic subject-detection crop for the timeline preview — the result can vary and isn't fully predictable.
Uploading natively at 16:9 sidesteps that auto-crop entirely, since the full image already fits the timeline preview shape.
Common mistakes
- Uploading a square or portrait image and trusting the algorithmic crop to keep the important part in frame.
- Not checking how the preview changes with multiple attached images — X lays those out differently.
FAQ
What if I'm posting multiple images at once?
X arranges multi-image posts in its own grid layout with different crops — this size applies to single-image posts.
Does this apply to GIFs too?
Yes — the same 16:9 recommendation avoids the timeline auto-crop for GIFs as well as static images.