Logo Sizes for Social Media: Which Ratio Where

Q: What aspect ratio should a profile picture logo be?

Square (1:1), everywhere — Instagram, TikTok, X, Facebook, YouTube, LinkedIn all crop avatars from a square, usually into a circle. Keep the mark centered with breathing room so the circular crop doesn't clip it.

Q: Why generate per-ratio instead of cropping one image?

Cropping a square logo to 16:9 either chops the mark or leaves dead space. Generating at the destination ratio lets the AI compose FOR that shape — the mark and name reposition to use the canvas properly.

Q: Which ratio for YouTube channel art?

YouTube banner art is very wide — generate at 21:9 (the widest available) and keep the essential mark centered, since YouTube crops differently per device. Use 1:1 for the channel avatar.

Platforms don't want one logo — they want the same logo in three shapes: a square for the avatar, a wide strip for the banner, and sometimes a tall card for stories. The fix isn't cropping; it's generating for the destination.

The three shapes that cover everything

Square (1:1) — avatars and profile pictures on every platform, app icons, watermark corners. Generate this first; it's the brand's passport photo.
Wide (16:9 or 21:9) — banners, channel art, website headers, link-preview cards. 16:9 for most; 21:9 for YouTube's extra-wide banner.
Portrait (4:5 or 2:3) — story stickers, Pinterest pins, tall promo cards.

Platform by platform

Instagram / TikTok / X / Facebook avatar: 1:1, mark centered — every platform circles the crop, so leave margin.
YouTube: 1:1 avatar + 21:9 banner (YouTube crops banners differently per device — keep essentials dead center).
Facebook / LinkedIn cover: 16:9 works; keep the mark off the extreme edges.
Etsy / marketplace shops: 1:1 icon + 16:9 or 3:2 shop banner.
Website header / email signature: 16:9 or 4:3 usually sits best in nav bars.

The LogoLab workflow

Nail the logo at 1:1 — brief, style, iterate until it's right (the core guide covers this).
Re-run the same brief at 16:9 (and 21:9 for YouTube). LogoLab offers 8 ratios — 1:1, 16:9, 21:9, 4:3, 3:2, 2:3, 4:5, 5:4 — and generating at the target shape lets the AI compose for it: mark left, name right, or name under mark, as the canvas demands.
Expect a sibling, not a clone. Each generation is a fresh take, so the wide version will be a variation on the theme. Keep your brief and style identical for family resemblance, favorite the matches, and check the rendered name's spelling each time.
Save each shape to Photos — you now have a mini brand kit: avatar, banner, story card.

The circle test: before uploading an avatar anywhere, imagine (or preview) the circular crop. If any part of the name touches the corners, it's gone. Center-weighted marks with margin survive every platform's scissors.

One brand, every shape

8 aspect ratios, composed by AI for each destination. Free to try on iPhone & iPad.

Download on the App Store

FAQ

What aspect ratio should a profile picture logo be?

Square 1:1 everywhere, centered with margin for the circular crop.

Why generate per-ratio instead of cropping one image?

Cropping chops or pads; generating at the ratio lets the AI compose for the shape.

Which ratio for YouTube channel art?

21:9 banner with essentials centered, plus a 1:1 avatar.