LinkedIn profile photo size, and what actually gets cropped
5 min The limits are 400x400 to 7680x4320 pixels, under 8MB, PNG or JPG. The more useful part is what LinkedIn does to your photo after you upload it.
image size.
2 articles tagged image size.
Why your LinkedIn photo looks blurry
4 min Almost always one of four things, and only one of them is about the original photo being soft. The other three you can fix in a couple of minutes.