The Behance Project Cover size (1400×760px)
On Behance, the project cover is the thumbnail that represents your work across the discovery feed, search, and your profile, and Behance recommends uploading a 1400x760 pixel cover. Behance then displays it as a cropped rectangle in the browsing grid, so this larger master gives it a sharp source to scale from and ensures your cover holds up next to the polished portfolios you are competing with for a click.
The design priority is standing out in a wall of thumbnails made by other designers. Since your cover is shown small in the feed alongside many others, a single strong image or a clear title beats a dense collage that becomes unreadable at grid size. It also helps to keep any project title within the central safe area, because the grid crop and the hover overlay that shows appreciations and views can encroach on the edges of the cover.
Sizing to the native 1400x760 proportions avoids the awkward crop that happens when you upload a square or off-ratio image and Behance trims it to fit the grid cell. Because Behance is a portfolio platform where first impressions drive project views, a cohesive cover style across your projects makes your whole profile look intentional and curated. This tool resizes 100% in your browser with no upload, it is free, and it preserves the aspect ratio. Behance occasionally updates its cover and grid dimensions, so verify the current size before publishing a new case study.