What’s the Recommended Facebook Cover Image Size?
Use 1640×922px to optimise for both desktop and mobile.
Facebook cover photos display at 820×312px on desktop and 640×360px on mobile. To keep your image sharp across devices, Facebook recommends uploading at 1640×922px, which accounts for higher-resolution screens. You should also stay within the safe area to avoid cropping key content and ensure your design meets the minimum width requirements. If you want to bring more attention to your page or event, you can also try running a giveaway campaign — it's a great way to drive engagement and get more eyes on your Facebook presence.