X Post Image Resizer

What matters

X Post Image dimensions at a glance

X post images display as 16:9 cards in the timeline feed. The 1600×900 size gives sharp rendering without hitting X's compression threshold too aggressively.

Images are the primary engagement driver on X. A correctly sized image fills the timeline card completely without cropping, making your post visually dominant.

Portrait or square images get center-cropped to 16:9 in the timeline, potentially cutting off text, faces, or key details. Users have to tap to see the full image.

Best practices

Use the crop intentionally

• Design for the 16:9 timeline crop — that's what most people see without tapping.
• Keep text large and in the center; X's compression can soften small details.
• PNG images over 900px wide are auto-converted to JPG, so export as JPG to control quality.