LinkedIn carousels still get more reach than any other format on the platform. The algorithm boosts them because people swipe through them, and time-on-post is what LinkedIn measures.
But most carousels are bad. The bad ones all fail in the same way and the good ones all succeed in the same way. The difference is one thing.
The one thing
A carousel works if every slide makes the reader want to see the next slide.
That's the whole rule. If slide three is interesting on its own but doesn't pull you to slide four, your carousel is dead. People stop swiping and the algorithm stops sharing.
How most carousels fail
Most carousels are written like a slide deck for a meeting. The first slide is a title. The middle slides each cover a sub-point. The last slide is a recap.
That structure is fine in a room with chairs. On a feed, it kills you. The title slide is boring, so people don't swipe. If they do, the middle slides are independent, so they swipe once and bounce. The recap is unread.
How good carousels work
Good carousels read like a story. Slide one is a hook that creates a question. Slide two starts to answer it but raises a bigger one. Slide three answers that and so on, until the last slide closes the loop.
Or they're a countdown. Five mistakes I made running a small SaaS. Slide one says "I'm about to share these and one of them cost me $40k." Slide two is mistake one. You keep swiping because you want to know which one cost the $40k.
Either way, the principle is the same: every slide is a setup for the next one.
A simple structure that works
If you don't know where to start, try this. Slide 1: a sentence that sounds wrong. Slide 2: why it's actually right. Slides 3 through 7: the proof. Slide 8: what to do with it.
The wrong-sounding sentence makes them swipe. The proof keeps them swiping. The "what to do" is the value they came for.
The visual
Don't overthink the design. Black background, white text, one idea per slide, big enough to read on a phone. Pretty carousels with low text get out-performed by ugly carousels with sharp ideas.
The idea is the design.