Keep critical text in the center third; mobile crops the left and right edges.
Facebook cover 820×312
820×312 · 2.63:1
Facebook cover photo size guide
A cover resizer works because the canvas has a fixed aspect ratio: 820×312 on desktop (roughly 2.63:1), and the same width and height scale down to 640×360 on mobile. That is the facebook cover photo size Facebook expects, so whatever you export here keeps the proportions the platform applies on pages and in the feed.
The centered safe zone exists because phones crop the left and right edges of a photo for facebook cover layouts. Keep your logo, headline, and key faces inside the middle third, and treat the outer third as decorative. The same rule applies to a group cover or a Page header, and it is the main difference from your profile photo, which Facebook crops into a square circle. If you prepare photos for facebook with this tool, you can see exactly what survives the mobile crop before you export.
Everything runs locally in your browser: no account, no bulk processing, and nothing uploaded while you work. Drop in an image, drag the crop window, and resize photos to the exact canvas in a couple of clicks. Export as JPG or PNG and keep the file size under 1 MB so uploading photos to Facebook feels instant. When you later schedule the finished image with SocialRobot, the same image sizes and presets are reapplied at publish, so what you see here is what goes out.
Still unsure about the right size for facebook covers? The free image resizer above is the fastest way to test crops, and the size cheat sheet links to every facebook image size for pages, posts, and ads.
Frequently asked questions
Schedule the JPEG you just cropped
SocialRobot reapplies these same presets at publish, so the file you download here doesn’t fight what shows up in the feed.
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