Most useful sizes
- Square image: 1080 × 1080
- Landscape image: 1200 × 628
- Header image: 1500 × 500
Why 1200 × 628 matters so much
It works well for share cards, article covers, and link preview graphics. If your site also uses OG images, the same size tends to fit that workflow nicely.
Common image problems on X
Wide graphics often break down when text sits too close to the edges or the subject is pushed too far to one side. That is why manual cropping is safer than letting a tool guess.