LinkedIn Document Carousels: Format, Sizes and When to Use Them
Updated 13 September 2026
A LinkedIn document carousel is a PDF uploaded as a document post, displayed as swipeable slides. It earns strong dwell time because each swipe is time on your post, which is one of the signals distribution is built on.
It is not a format for every idea. Use it when the content has steps, comparisons or a framework, and stay with text when you have a single argument.
Specifications that actually matter
| Setting | Recommendation | Note |
|---|---|---|
| Format | Export from any design tool | |
| Aspect ratio | 4:5 portrait, 1080 x 1350 | Takes the most feed height on mobile |
| Slides | 8 to 12 | Enough to swipe, short enough to finish |
| Font size | Nothing under 24pt | Most readers are on a phone |
| File size | Under 10MB | Keeps loading instant |
Structure of a carousel people finish
- 01Cover: the promise in six words or fewer, plus a visual cue to swipe.
- 02Slide 2: the problem, stated so the reader recognises themselves.
- 03Slides 3 to 9: one idea per slide, one sentence of support each.
- 04Second-to-last: the summary, the slide people screenshot.
- 05Last: who you are and one clear next step.
One idea per slide is the rule that separates carousels that get saved from carousels that get abandoned on slide three.
How to post one
- 01Click Start a post, then the document icon.
- 02Upload the PDF and give it a title. The title shows under the carousel and is indexed, so use real words, not Untitled.
- 03Write the caption as a standalone post. Many people never swipe, the caption has to work alone.
- 04Publish and reply to comments in the first hour.
When not to use a carousel
- When your point is one sentence long. A carousel will dilute it.
- When you have nothing visual or structural to show, a wall of text across ten slides is worse than one text post.
- When you cannot make the cover legible at thumbnail size.
Frequently asked questions
- What size should a LinkedIn carousel be?
- 1080 x 1350 pixels, a 4:5 portrait ratio, exported as a PDF. That takes the most vertical space in the mobile feed.
- How many slides should a LinkedIn carousel have?
- Eight to twelve. Long enough to develop an idea, short enough that people reach the last slide.
- Do carousels get more reach than text posts?
- They tend to earn more dwell time, which helps distribution. A weak carousel still loses to a strong text post, so match the format to the idea.
We build this for founders, end to end.
Positioning, profile, weekly content and outreach, handled by our team in your voice.
Book a free strategy call