What is the correct LinkedIn banner size?

The recommended size for a personal profile banner is 1584 x 396 pixels, a 4:1 ratio. Export a high-quality PNG or JPG.

Where does my profile photo sit on the banner?

Over the bottom-left of the banner. Keep important text and your logo away from that area and toward the center safe zone.

One clear message: what you do and who you help, a simple proof point or tagline, and a light call to action or contact detail.

No. Starting from a template sized at 1584 x 396 and swapping in your colors, message and logo gives a professional result without design skills.