Social media image sizes, checked and dated
By the Crowbert teamUpdated September 2026
Most size guides copy each other and go stale quietly. Every dimension here was checked against the platform’s own documentation, and each page says when. Start with the asset you are exporting.
YouTube
X (Twitter)
One upload, every platform’s dimensions
Crowbert formats a single asset for each platform it publishes to, so you stop exporting the same image at four sizes before you can schedule it.