Facebook Cover Photo Size: 851 x 315
The Facebook cover photo is uploaded at 851 x 315 pixels (about 2.7:1). It displays as 820 x 312 on desktop and crops to 640 x 360 on mobile, so the visible area changes between devices. This is an informational size and is not one of the export presets, but you can still crop and export a 851x315 image below. Drop an image below and crop it to 851 x 315 in your browser - nothing is uploaded.
851 x 315 pxRatio~2.7:1PlatformFacebookWhy 851 x 315 (~2.7:1)?
Because desktop and mobile show different crops of the same upload, a single design has to work in both. Building on an 820 x 360 canvas and keeping the message in a central 640 x 312 safe zone covers both viewports.
Common mistake: The mistake is placing a logo or contact info in the bottom-left, where the circular profile picture overlaps the cover on desktop. Shift key elements slightly right of center and clear the bottom-left corner.
Frequently Asked Questions
Upload at 851 x 315 pixels. It renders 820 x 312 on desktop and crops to 640 x 360 on mobile. Keep text in a central safe zone and clear the bottom-left where the profile photo overlaps.
Desktop and mobile display different crops of the same 851x315 upload - 820x312 on desktop, 640x360 on mobile. Design so the key content sits in the overlapping central safe area.