LinkedIn carousel size and dimensions

Design your slides at a 4:5 portrait ratio — 1080 × 1350 px — and export them as a single PDF. Portrait takes up the most vertical space in the mobile feed, which is where nearly all carousel swipes happen.

4:5 (1080 × 1350) — the default for LinkedIn and Instagram carousels. Maximum feed height without cropping.

1:1 (1080 × 1080) — safest cross-platform option when the same deck goes to Instagram, LinkedIn and X.

16:9 (1920 × 1080) — use it only when the deck is really a presentation people will open on a laptop; it looks tiny on phones.

Document posts accept PDF, and the practical limit for a feed carousel is far below any hard cap — aim for under 10 slides and a file a few megabytes in size. Keep every page the same dimensions; mixed page sizes make LinkedIn letterbox some slides.

Keep at least 6–8% padding on every edge so nothing collides with the swipe UI, and size titles so they remain legible at roughly a third of full size. If you can read a slide at thumbnail scale, it works in the feed.

DeckWave lets you switch between 4:5, 1:1 and 16:9 with one click and re-exports the whole deck at the new ratio, so you can test which one fits your content.