Profile Picture Size Guide

Look up the recommended profile picture dimensions for any major platform — LinkedIn, Twitter/X, Facebook, Instagram, YouTube, TikTok, Discord, Slack, GitHub, plus a long tail of secondary networks. Each entry shows the upload size, the displayed size, and the cropping shape (square vs circle vs rounded).

The trick is that displayed size is usually smaller than upload size — platforms compress aggressively. Upload at the highest size in the spec (often 800×800 or 1080×1080) so the compression has more pixels to work with; the displayed avatar still looks crisp on Retina displays.

Square uploads are the safe default. Most platforms crop to a circle at display time but accept any square image; uploading a non-square crops by their algorithm, which sometimes cuts off the part of your face you wanted shown.

Why upload size and display size differ: platforms re-encode every uploaded image into multiple sizes for different contexts (profile page, comments, notifications, mobile, desktop). The largest display slot is typically 200-400 pixels for an avatar; smaller is 32-50 pixels for inline appearances. The compression pipeline produces better quality at small display sizes when given a high-resolution source. Upload a 1080×1080 PNG, the platform crops to circle, downsamples to 400px for the profile page, 100px for the timeline, 32px for inline. All three look crisp because there's headroom in the source. Upload a 200×200 PNG and the timeline view starts looking soft; the inline view is fine; the profile page upscales and looks fuzzy on a Retina screen.

Worked example: setting up a LinkedIn profile. Spec: 400×400 minimum, 8MB max, supported formats JPG/PNG/GIF. Best practice: upload 1024×1024 PNG, square aspect, subject centered with 15% padding on every side. LinkedIn renders it as a 400×400 circle on the profile page and 48×48 in feed comments. Now the same headshot for Twitter: spec 400×400 minimum, displayed 200×200 in profile, 48×48 in timeline. Same source upload works on both — only the platform-specific cropping behavior changes. For YouTube channel art: 2560×1440 banner with a 1546×423 'safe area' visible on every device, plus separate 800×800 channel icon. Banner and avatar are different uploads; pick correctly.

The circle-crop face-cutting bug: most platforms display avatars as circles even when you upload squares. They crop by inscribing a circle inside your square. Anything in the corners of the square is invisible at display time. If your photo is tightly cropped to your face, parts of forehead, chin, and ears can disappear — sometimes the worst-case cut is genuinely unflattering. Solution: leave 15% padding on all four sides of the square upload. Test by uploading and previewing on the actual platform — preview tools often show the square crop rather than the circle render, so you don't see the actual problem until you publish.