All X (Twitter) image sizes
4 sizes with exact pixel dimensions, and a free resizer for each one.
Pick a size to resize
About X (Twitter) images
X displays images differently in timeline cards vs expanded views. Timeline previews are cropped to roughly 16:9 for single images, while the expanded view shows the full upload. Multi-image tweets use different crop ratios entirely.
X removed its ML-based auto-crop in 2021 in favor of a center crop, which makes image composition more predictable. Keep your subject centered and you'll avoid most surprises.