A carousel that works has three parts: a cover that promises something specific, a middle with one idea per slide, and a closing slide with the next step. Use a vertical format, large and short text, and tell a story that makes people want to swipe. Instagram allows up to 20 images or videos per carousel, but 6 to 10 slides is usually enough.
The carousel is the feed format that best keeps people inside your post, because each slide is a new chance for them to keep going. It’s also the easiest to get wrong, with ten slides of small, disconnected text that nobody makes it past slide two on.
The structure that works
Cover
This is the carousel’s ad. It needs to answer “why should I swipe?” A specific promise works better than a generic topic.
- Generic: “Skincare tips”.
- Specific: “3 skincare mistakes that cause summer skin spots”.
Middle
One idea per slide. Short headline, short explanation, an image or icon that helps. The last line of each slide can lead into the next.
Closing
A one-sentence summary and a single next step: save it, send a message, check the link in bio. Just one action.
Size and format
- Vertical. The 4:5 format (1080 x 1350 pixels) takes up more screen space on mobile than a square, and it’s still a safe choice.
- Same format on every slide. Instagram crops the rest to match the first slide’s format.
- Safety margin. Keep text away from the edges so it doesn’t get cropped in the profile grid.
- Large font. If people have to zoom in to read it, they won’t read it.
How many slides
The limit is 20 items per carousel, but the right length is whatever the idea calls for. A six-step walkthrough needs eight slides: cover, six steps, and closing. Padding it out to look more complete just makes readers drop off halfway through.
The carousel types that perform best
- Step by step. A process broken into stages.
- List of mistakes. “5 mistakes that…” is one of the most-read formats.
- Before and after, showing what happened in between.
- Myth vs. fact.
- Real case study. Problem, solution, result, with the client’s permission.
- Comparison. “This or that”, with when to use each.
To know when to use a carousel versus a video, read carousel or Reels.
How to write the text on each slide
- Short sentences. One idea per line.
- Verb first: “Switch”, “Avoid”, “Check out”.
- No six-line paragraphs on a single slide.
- The caption should add to the carousel, not repeat it. See how to write Instagram captions for businesses.
Visuals
Keep the same look across every slide: colors, fonts, headline placement. The carousel should feel like a single piece. If your brand doesn’t have that consistency yet, start with the basics in visual identity for social media.
Mistakes that kill a carousel
- A cover with no clear promise.
- Text that’s too small.
- A different look on every slide.
- Too much information on one slide.
- A closing with no next step.
- A stock photo that has nothing to do with the topic.
How to measure results
Look at saves, shares and reach among people who don’t follow you. A saved carousel is a sign the content was useful. If a lot of people see the cover but few swipe through, the problem is the cover’s promise.
Frequently asked questions
Can you add video to a carousel? You can. Images and videos can be mixed in the same carousel.
Can I use the same carousel on LinkedIn? You can, as a PDF. LinkedIn’s audience tends to accept more text per page. See LinkedIn for businesses.
How many carousels per week? It depends on your pace. You’ll find benchmarks in how often to post on Instagram.
Who creates the carousels? Creating ready-to-publish carousels is included in every content creation plan. A five-page carousel counts as five designs.