On LinkedIn, a "carousel" almost always means a document post: you upload a PDF, and readers swipe through it page by page right in the feed. A good one needs three things: an 8 to 12 page structure with one idea per page, a 4:5 portrait or square PDF, and post text whose first two lines earn the click. This LinkedIn carousel guide covers each in order: structure, sizing, posting and copy.
Three things called "carousel"
| Format | How you post it | What readers see | Good for |
|---|---|---|---|
| Document post (PDF) | Add a document when creating a post | First page in the feed, swipeable inline | Frameworks, lessons learned, industry takes |
| Multi-image post | Upload several images at once | A collage; click to view each image | Event photos, team moments |
| Carousel ad | Built in the ads manager | Swipeable cards with links | Paid promotion, outside the scope of this guide |
This guide is about the first: the organic PDF document post. Its strength is a fixed page order and a smooth swipe, which makes it a natural home for a long post compressed into something people can finish.
The page structure
Take the "How we hit $1M ARR in 14 months" example from our gallery. The source is a growth retrospective with five tactics, key numbers and a closing question. It splits cleanly into eight to ten pages:
| Page | Job | How to write it | Example |
|---|---|---|---|
| 1 | Hook | Specific result + timeframe + constraint | $0 to $1M ARR in 14 months, with 5 people |
| 2 | Context | Say what you didn't do, to create contrast | No viral launch. No big ad budget. |
| 3 to 7 | Ideas | One tactic per page: headline + why + one number | We priced on outcomes, not seats. |
| 8 | Reflection | What you'd do differently | Hire customer success earlier |
| 9 | Results | Three or four key metrics | Customers, retention, payback |
| 10 | Call to action | One specific question + a follow prompt | What worked for your early growth? |
Three rules hold it together. The cover carries specific, checkable information. Each idea page covers exactly one idea. And the closing question is specific enough that people actually want to answer it; "thoughts?" rarely works.
Size, length and file settings
- Size: 4:5 portrait (1080 x 1350) or 1:1 square (1080 x 1080) are the usual choices. Portrait occupies more of the mobile feed. Keep one size throughout.
- Length: 8 to 12 pages is typical. Under six feels thin; past fifteen, more readers drop off midway.
- Text: 20 to 50 words per page, at a size that reads on a phone without zooming.
- File: embed fonts when you save the PDF so they don't get substituted on other devices. LinkedIn caps file size and page count; follow the limits shown on the upload screen.
- Document title: you'll be asked for one at upload. It appears above the viewer, so write a clear description rather than leaving a file name like "final_v3".
Posting it, step by step
- Write the post text first. The first two lines are your hook, because the feed usually shows only two or three lines before "see more".
- In the post composer, choose to add a document and upload the PDF.
- Enter the document title, for example "5 tactics that took us to $1M ARR".
- Preview the first page on your phone and confirm the cover reads clearly and isn't cropped.
- Add context at the end of the post. Tag people or companies only where it's genuinely relevant.
- After publishing, put any links in the first comment and reply to early comments promptly.
- A week later, review how far people swiped, the quality of comments and any messages it generated. Use that to shape the next one.
Writing copy that survives the swipe
Lead with verbs and numbers
"Our company has always been committed to delivering value" says nothing. "We cut onboarding from 2 weeks to 10 minutes" says everything. Short sentences that start with a verb and include a number are easy to read on a small screen.
Replace adjectives with specifics
"Very important" and "significantly improved" carry almost no information. Swap them for a concrete object or figure. If you have no shareable data, describe the specific action you took. Never invent numbers to fill a slide.
Keep one voice
Lessons-learned posts on LinkedIn work in a plain first-person voice. Avoid press-release phrasing, and don't flip between "we" and "the company" within the same carousel.
Get a second reader
Before posting, have a colleague read the cover and the final page. Those two pages decide whether people start swiping and whether they comment. If English isn't your team's first language, make that reader a native speaker.
Making the PDF faster with AI
Splitting a long post into pages, designing each one and saving a clean PDF can easily take a few hours by hand. In our AI slide studio, the article-to-carousel workflow lets you pick LinkedIn as the platform. Paste the article or upload a document, review the page-by-page outline, generate, and download a 4:5 portrait PDF ready to attach as a document post. Each page costs 2 credits with AI images included, and a brand kit puts your logo and footer on every page. The growth retrospective above is in our gallery: open the $1M ARR carousel example to see the exact input and every page.
To sharpen your cover and opening lines, read LinkedIn carousel hooks. If you publish on several platforms, see our guide to brand-consistent social carousels.
FAQ
Why use a PDF instead of multiple images?
Multiple images appear as a collage that readers have to open and click through. A PDF uploaded as a document shows its first page right in the feed and lets people swipe page by page, which feels like a real carousel and keeps your pages in order.
What size should a LinkedIn document post be?
The common choices are 4:5 portrait, such as 1080 x 1350, or 1:1 square. Portrait takes up more of the mobile feed, and our LinkedIn carousel export is a 4:5 portrait PDF. Keep every page the same size so nothing jumps as people swipe.
Are links inside the PDF clickable?
Do not count on it. In the document viewer, links inside a PDF usually cannot be opened directly. Put the URL in the post text or your first comment, and add a line such as "link in the comments" on the final page.
Sitting on a retrospective or a strong opinion about your industry? An 8 to 10 page PDF is much easier to finish than a wall of text. Paste it into the carousel studio, choose LinkedIn, and you'll have a document ready to upload in minutes.
Editorial Team
