In short
A LinkedIn carousel is a document post. Export your slides as one PDF with every page the same size, upload it from Start a post, More, then Add a document, add a title and post [1]. The limit is 100MB and 300 pages [1].
Post it on LinkedIn
These are LinkedIn's own steps for desktop [1]:
- Click Start a post at the top of your LinkedIn homepage.
- Click More, then the Add a document icon.
- Click Choose file and pick your PDF.
- Add a title to the document and click Done.
- Write the post text above it, then click Post.
On the app, tap Post, then More, then Document, and follow the same steps [1].
Check it before you press Post. Once it's up, you can edit the post text but you can't change the document [1]. A typo on slide four means deleting and posting again.
What a LinkedIn carousel is
There's no carousel button in a LinkedIn post. The slide posts you swipe through are documents: a PDF, PowerPoint or Word file uploaded to a post [1]. LinkedIn shows the document inside the post, and anyone who can see the post can download it as a PDF [1].
That's different from a post with several photos. You can add up to 20 images to a post, but they show together with the first one largest [2], not as pages to swipe.
Make the slides
Keep every page the same size. LinkedIn asks that PDFs with pages of different sizes be fit to one page size [1]. A 4:5 portrait (1080 x 1350) or a square (1080 x 1080) both read well on a phone.
- Slide one is the hook: the problem or promise, in a few words, big.
- One point per slide after that, with a short headline and a line or two under it.
- End on what you want the reader to do: comment, save, or message you.
Example
A consultant's carousel on pricing a first project: slide one 'Three ways to price your first project', then one slide each for hourly, fixed and retainer, then 'Which one are you using? Tell me below.'
The Postmosis carousel maker turns a post into 2 to 10 slides in your brand colours and downloads them as one PDF for LinkedIn, with a 1080 x 1350 PNG of each slide for Instagram. See the carousel maker
Export one PDF
Export the slides as a single PDF. LinkedIn takes PowerPoint and Word too, but recommends converting to PDF for the best upload [1]. If your design app exports layered PDFs, flatten them: LinkedIn says PDFs with layers must be flattened or merged [1].
Check the size before you upload. The limit is 100MB and 300 pages [1].
Write the post around it
The title shows on the document, so make it say what's inside [1]. The post text above it is what people read before they swipe: give them the reason to open it in the first two lines, and keep it well under LinkedIn's 3,000-character limit [3].
The LinkedIn text formatter adds bold and bullet points to the post text. The character counter shows what's left.
Sources
- Upload and share documents on LinkedIn, LinkedIn Help, read 28 October 2026
- Share photos on LinkedIn, LinkedIn Help, read 28 October 2026
- Post and share updates, LinkedIn Help, read 28 October 2026
