Carousels are the most engaging post format
A carousel post is a single Instagram post that contains up to 20 slides the viewer swipes through. They get more reach than single images because Instagram will surface the post a second time in the feed if a viewer didn't engage with the first slide - effectively giving each carousel two chances to land. They get more dwell time because a swipe gesture is more involving than a scroll. And they let creators stretch a single visual idea across multiple frames.
The most striking carousel format is the panorama carousel: a single wide image - a city skyline, a long illustration, an editorial spread - sliced into N square or vertical tiles that line up seamlessly when the viewer swipes left to right. Instagram's carousel UI hides most of the seams between slides, so a well-cropped panorama feels like a single image you swipe through rather than a stack of separate posts.
Tips for a good panorama carousel
Lead with the strongest visual. The first slide is what people see in the feed and what decides whether they swipe. Crop the panorama so the most arresting third of the image is in slide 1.
End with a payoff. The last slide is what viewers see right before deciding to like, comment, or move on. Put your call to action, your logo, or the most surprising part of the image there.
Plan for the seams. Instagram does show a thin gap between slides during the swipe transition. Shift the crop so seams fall in low-information areas - sky, water, plain background - rather than across faces or text.