Guide · Publishing
LinkedIn Carousel Size Guide
1080 x 1080 square or 1080 x 1350 portrait, exported as a PDF. Everything else in this guide is about not undoing that.
LinkedIn carousel size is 1080 x 1080 pixels for square pages or 1080 x 1350 for portrait, exported as a PDF and posted as a document. LinkedIn allows up to 300 pages and a 100 MB file; most good carousels use between six and twelve pages and weigh a couple of megabytes.
The important structural fact is that a LinkedIn carousel is not an image format. It is a document post, and each page of your PDF becomes one swipeable slide. That means the page size of the document decides everything about how the carousel displays — and page size is the one setting most people never change.
LinkedIn carousel specifications
| Setting | Value | Notes |
|---|---|---|
| Square pages | 1080 x 1080 px (1:1) | Safest all-round choice |
| Portrait pages | 1080 x 1350 px (4:5) | Fills more of the mobile feed |
| Upload format | PDF document post | Each page becomes one slide |
| Maximum pages | 300 | Six to twelve performs best |
| Maximum file size | 100 MB | Aim for a couple of MB |
| Safe margins | About 60 px on every side | Keeps text clear of rounded edges and controls |
These match the specifications on our Carousel Size Guide tool page.
Square or portrait?
Portrait at 1080 x 1350 takes up more vertical space in the feed, which is generally good for visibility on a phone — a taller card means more of the screen is yours while someone decides whether to stop scrolling.
Square at 1080 x 1080 is more forgiving. If your content mixes wide charts, screenshots and text, square gives you a consistent frame that does not force landscape material into a tall box. It is also the easier size to reuse elsewhere.
Pick one and use it for every page in the document. Mixed page sizes inside a single PDF make the viewer letterbox some slides and not others, which looks exactly as accidental as it is.
The margin rule nobody follows
Keep text and anything you care about roughly 60 pixels clear of every edge. The document viewer rounds the corners of the page and floats its own navigation controls and page counter over the bottom of it. Type that sits against the edge is either clipped by the rounding or covered by an arrow.
The bottom edge is the worst offender, because that is where designers like to put page numbers, and where the viewer likes to put its own. Two page counters, neither of them legible, is a strong look.
Type sizing: assume a thumbnail
A 1080-pixel page renders a few hundred pixels wide on a phone. Body copy at slide-deck sizes disappears. As a working rule, if a line of text would not be readable on a slide from the back of a meeting room, it will not be readable in the feed.
That constraint is useful rather than annoying: it forces one idea per page. If a page needs a paragraph to make its point, the point belongs across two pages, or in a post.
High contrast helps more than clever colour. LinkedIn re-compresses the document, and low-contrast type on a textured background is the first thing to smear.
How to build the file
Step 1
Set the page size in pixels before you design
1080 x 1080 or 1080 x 1350. Your design tool's default is a print size, and print sizes are the wrong ratio for every surface on LinkedIn.
Step 2
Write the sequence as one line per page
Before any layout. If the one-line version does not build towards something, no amount of gradient will fix it.
Step 3
Put the payoff on page one
Page one is the only page most people will see. It is not a cover slide with your logo on it — it is the promise. Branding can wait for the last page.
Step 4
Keep everything inside a 60 px margin
On all four sides, on every page, including the bottom where the viewer's controls live.
Step 5
Export as PDF at exact page size
No bleed, no crop marks, no print resolution, no colour profile from a press-ready preset. Screen output, exact dimensions.
Step 6
Check the file size and page count
Aim for a few megabytes and six to twelve pages. If the file is 40 MB, something in the export is set for print.
Export settings that quietly ruin things
Bleed and crop marks change the page dimensions LinkedIn reads, so a carefully sized 1080 x 1080 page arrives as something slightly larger with a white frame. Turn both off.
Print resolution inflates the file for no visible benefit — the viewer is showing a few hundred pixels wide regardless. A 100 MB file that uploads slowly and previews badly is a self-inflicted problem.
Embedded fonts are worth keeping. Outlining text is fine too, but if your tool offers "subset fonts", take it; text that falls back to a substitute font mid-carousel is a distinctive kind of ugly.
Pre-publish checklist
- Every page at the same pixel size: 1080 x 1080 or 1080 x 1350
- Page one states the payoff, not the title
- All text at least 60 px clear of every edge
- Type large enough to read at phone width
- Six to twelve pages, each making one point
- Exported as PDF, screen resolution, no bleed or crop marks
- File a few megabytes, not tens
- Last page gives a specific next step
And then write a real caption
The post text above a carousel is not a label. It is the thing that gets read first and decides whether anyone swipes. Give it the same treatment you would give a normal post: a concrete opening line, short paragraphs, and a reason to open the document.
Then preview the caption before you publish, because the truncation point applies to it exactly as it does to any other post.
Frequently asked questions
- What size should a LinkedIn carousel be?
- 1080 x 1080 pixels for square pages or 1080 x 1350 for portrait, exported as a PDF and uploaded as a document post.
- How many slides should a LinkedIn carousel have?
- LinkedIn allows up to 300 pages, but six to twelve works best — short enough to finish, long enough to teach something.
- What file format is a LinkedIn carousel?
- PDF, posted as a document. Each page of the PDF becomes one swipeable slide. Separate image files create a multi-image post instead.
- What is the maximum file size for a LinkedIn carousel?
- 100 MB. In practice, export at screen resolution and exact page size and you will land at a few megabytes.
- Should LinkedIn carousels be square or portrait?
- Portrait fills more of the mobile feed; square is more forgiving when your content mixes charts, screenshots and text. Use one size for every page in the document.
- How much margin should a carousel page have?
- About 60 pixels on every side. The viewer rounds the page corners and overlays its own navigation controls near the bottom edge.
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