We have noticed problems when uploading logo profile images using the recommended dimensions of 180px x 180px. Often times the logo is blurry.
1 – Facebook applies a compression on all images bigger then 99kb which causes a blurry result
2 – There are cases where Facebook will enlarge the image and if it is too small the image will become very pixelated. (Especially in fullscreen mode on the mobile app)
Dimensions: 1440px x 1440px File Type: png-24 Size: Under 90kb