Short answer: personal profile banner 1584 × 396 px (4:1); company page cover 1128 × 191 px.
Where the profile photo sits
Your round profile picture overlaps the lower-left part of the banner on desktop and the middle-left on mobile. Put your text on the right half of the image.
| Type | Size (px) |
|---|---|
| Personal background photo | 1584 × 396 |
| Company page cover | 1128 × 191 |
| Post image (landscape) | 1200 × 627 |
| Post image (square) | 1080 × 1080 |
Max file size for the background photo is 8 MB; PNG or JPG.