# How to post a carousel on LinkedIn (and reuse your Instagram ones)

> A LinkedIn carousel is a PDF: one page per slide, posted as a document. Here's how to post one by hand, how to turn an Instagram carousel into one, and how to have every new carousel sent to LinkedIn for you.

Post Once blog, by Shyjal Raazi, Founder. Source: https://postonce.com/blog/how-to-post-carousel-on-linkedin. Last updated 2026-11-06.

On Instagram, a carousel is a post with several photos that people swipe through. LinkedIn has no post like that, except in ads. If you add several photos to a normal LinkedIn post, they show up as a grid, and nobody swipes.

The carousels you see in the LinkedIn feed, the ones with an arrow and a page count, are PDFs. Each page of the PDF is one slide, and LinkedIn shows the document so people can swipe through it the same way they would on Instagram.

So posting a carousel on LinkedIn comes down to two jobs: get your slides into one PDF, then post it as a document.

## How to post a carousel on LinkedIn

1. Put your slides in one PDF, one slide per page, all the same size.
2. On LinkedIn, press **Start a post**.
3. Open the **+** (more) menu and pick **Add a document**.
4. Choose your PDF.
5. Give the document a title. It shows above the first page, so make it say what the carousel is about.
6. Write the text of your post, add any hashtags, and press **Post**.

LinkedIn takes PDF, PowerPoint and Word files [up to 100 MB and 300 pages](https://www.linkedin.com/help/linkedin/answer/a564109). PDF is the safe choice for a carousel, because it keeps your slides exactly as you designed them.

## How to turn an Instagram carousel into a LinkedIn carousel

If you already made the carousel for Instagram, you don't need to design it again. The slides work on LinkedIn as they are. A 4:5 portrait carousel stays 4:5, and a square one stays square. You only have to join them into a PDF.

Start from your original slide files, not from screenshots of the Instagram post. Screenshots pick up the app's buttons and lose quality.

- **Made in Canva:** open the design, press **Share**, then **Download**, and pick **PDF Standard**. Each page becomes a slide.
- **On a Mac:** name the slide images in order (1, 2, 3...), select them all in Finder, right-click, and pick **Quick Actions**, then **Create PDF**.
- **On Windows:** select the images, right-click, pick **Print**, and choose **Microsoft Print to PDF**. Turn off **Fit picture to frame** if it crops your slides. Windows prints onto paper-sized pages, so you may get white margins around each slide.

Then post the PDF with the steps above. Copy your Instagram caption into the post text, and use its first line as the document title.

This works fine for one carousel. It gets old when you post a few every week, because each one means exporting, joining, uploading and copying the caption again.

## Send every new carousel to LinkedIn automatically

Post Once does those steps for you. You keep posting carousels on Instagram as usual. Post Once notices each new post within a minute or two, turns the photos into a PDF, and posts it to your LinkedIn profile with your caption. You never open LinkedIn to do it.

Here's what happens to each part of the carousel:

| On Instagram | On LinkedIn |
|---|---|
| Each photo slide | One page of the PDF, at the photo's own size |
| Video slides | Left out, because a LinkedIn document can't play video |
| The first line of the caption | The document title, up to 100 characters, cut at a word. With no caption, the title is "Carousel" |
| The full caption | The text of the post, up to 3,000 characters, with hashtags as LinkedIn hashtags |
| A single photo | A normal photo post, not a PDF |

Two tips follow from that. Write the first line of your caption like a headline, because it becomes the title people see on top of the carousel. And if your Instagram caption leans on "link in bio", Post Once can strip those lines from the LinkedIn version with **Rewrite caption**, which the [Instagram to LinkedIn setup guide](https://postonce.com/help/connect-instagram-to-linkedin) walks through.

It works the same way for posts with several photos on Facebook Pages, Threads and X: they go to LinkedIn as a PDF too.

### If you'd rather post a grid

Some posts read better as a grid, like a set of event photos nobody needs to swipe through. On the LinkedIn row in Post Once, **Carousels** sits under **Photos** and has two choices: **Swipeable PDF**, the default, and **Photo grid**, which posts up to 20 photos in one normal post. The choice applies to every carousel after you change it.

### What to know before you set it up

Post Once posts to your personal LinkedIn profile, not to a company Page. LinkedIn also makes every app reconnect after 60 days, so Post Once emails you 5 days before that and you reconnect with one sign-in.

The same carousel goes to your other accounts at the same time, if you connect them: Threads, Facebook Pages, X and TikTok all take photo posts, each in its own format. [Cross posting](https://postonce.com/crosspost) shows what each platform takes.

Setup takes a few minutes: connect Instagram, connect LinkedIn, and you're done. The free plan includes 10 reposts, with no card needed, so you can watch your next carousel land on LinkedIn before you pay anything.