What matters
Facebook Profile Photo dimensions at a glance
Facebook profile photos render as small circles across the platform — next to posts, comments, and messages. A 170×170 source is the minimum for sharp desktop display.
This tiny circle is your visual identity across all Facebook interactions. It needs to be instantly recognizable at very small sizes.
Uploading a non-square image results in awkward circular cropping. Low-resolution uploads look pixelated, especially on high-DPI screens.