The LinkedIn Profile Picture size (400×400px)
LinkedIn profile pictures work best uploaded at 400x400 pixels in a 1:1 square. Because this is a professional network, the avatar usually is your face, and a clean square headshot at this resolution stays crisp in the feed, in search results, and on your profile without the platform upscaling and softening it.
LinkedIn displays the picture inside a circle, so the square corners are cropped. For a headshot that means framing your head and shoulders centered, with a little space above your head, so the circular crop does not clip your chin or the top of your hair. A tightly cropped face that hits the corners looks awkward once masked.
The avatar appears small across most of LinkedIn, next to your name in comments, connection requests, and search. A well-lit face on a simple background reads clearly at that scale, while busy backdrops or full-body shots become unrecognizable. Aim for good lighting, a plain background, and your face filling a comfortable portion of the frame for a credible professional impression.