Short answer: A carousel people save has a hook that stops the thumb, one idea per slide, proof that makes it credible and a fix the reader can use right away. Make it 1080 × 1350 pixels, keep the text big and end on something worth saving.
We publish carousels every day on accounts we run ourselves, including the health account Dr. Painkill. This is the structure we have landed on after hundreds of published carousels.
1. Start with the hook
The first slide decides whether someone swipes or scrolls past. It has one job: stop the thumb. Hooks that work well for us:
- A surprising number. “Sleeping nine hours scored worse on memory tests than seven.”
- A contradiction. “More sleep is not always better.”
- A common mistake. “This is how most people drink their tea, and lose the best part.”
Write the hook first and the rest after. If you cannot write a strong hook, you usually have not found the angle yet.
2. One idea per slide
Every slide should be readable in a few seconds. If you need more text, split it over two slides instead of shrinking the font. It may feel like the carousel gets long, but the swiping is exactly what keeps people reading.
A simple order that almost always works:
- Hook: the claim or the number.
- Problem: why it matters to the reader.
- Proof: the study, the chart or the example.
- Fix: what the reader can do today.
3. Show the proof
Proof is what makes people save. A study, a clear number or a chart turns the carousel into something people want to find again. Put the source on the slide, with a short name and year. It builds trust and makes the post easier to share.
4. End with a fix, not an ad
The last slide should give the reader something to do. That is the slide that gets sent to a friend. A final slide that only says “follow us” rarely works as well as concrete advice. If you want a call to action, put it in the caption.
5. Design that reads on a phone
- Big text. People hold the phone at arm’s length.
- High contrast. Light text on a dark image or the other way around, never grey on grey.
- One style. The same font, the same accent color and the same margins on every slide.
- Room at the edges. The platforms’ own buttons and captions cover parts of the image, especially at the bottom.
The right size for each platform
| Platform | Format | Size |
|---|---|---|
| Carousel, up to 20 slides | 1080 × 1350 (4:5) or 1080 × 1440 (3:4) | |
| TikTok | Photo post | 1080 × 1920 (9:16) |
| Document (PDF) | 1080 × 1350 per page |
The caption
The caption builds on the hook and adds context. Write like you talk, ask a question that is easy to answer and use three hashtags at most. More than that mostly looks like spam.
Measure the right things
Likes are nice, but saves and shares tell you more about a carousel. Compare posts only once they are a week old, since views keep growing for the first few days. Look for patterns: which hooks, topics and formats get the most saves?
Do it every day
The hard part of carousels is not making one. It is making one every day. That is why we built an engine that researches, writes, designs and publishes automatically, and run it on our own accounts.
See how content on autopilot works or look at more real carousels.