Guide · Publishing

LinkedIn Carousel Mistakes

Wrong page size, unreadable type, no reason to swipe — the failures that waste a good carousel, in the order they usually happen.

Chris Bonney, Founder6 min read

A LinkedIn carousel is a PDF posted as a document, which means the page size of that PDF decides everything about how it displays. Most carousel problems are set in motion before a single word is written — at the moment someone opens a blank document at the wrong dimensions.

The seven mistakes

  1. Step 1

    Designing on a letter or A4 page

    Document defaults are print sizes, which are taller and narrower than anything LinkedIn displays well. Set a square or portrait pixel canvas before you design, not after.

  2. Step 2

    Treating slide one as a cover

    The first page is the only page most people see. It has to state the payoff, not the title of a deck. Put the promise there and the branding somewhere else.

  3. Step 3

    Body-copy-sized type

    A page that is 1080 pixels wide renders a few hundred wide on a phone. If the type would be small on a slide projected in a room, it is invisible in the feed.

  4. Step 4

    Content in the margins

    The document viewer rounds page corners and floats navigation controls over the page. Keep text and key detail well inside every edge.

  5. Step 5

    Too many pages

    Long decks lose people mid-swipe. A tight run of pages that each make one point beats a thorough one nobody finishes.

  6. Step 6

    No reason to keep swiping

    Each page should open something the next one closes. If every page is self-contained, there is no momentum.

  7. Step 7

    Exporting for print

    Bleed, crop marks and print resolution change the dimensions LinkedIn reads and inflate the file. Export at the exact page size, screen resolution, nothing added.

1:1
Square — safest
4:5
Portrait — more feed
A4
Print — avoid
Square pages are the safest all-round choice; portrait pages occupy more of the mobile feed. Print sizes fit neither.

Design for the swipe, not the page

The unit of a carousel is not the slide, it is the transition. Write the sequence as a single argument first — one line per page — and only then design. If the one-line version does not build, no amount of layout will save it.

Finish with something specific: a next step, a resource, a question worth answering in the comments. A carousel that ends on a logo ends the conversation.

Pre-publish checklist

  • Canvas set to a square or portrait pixel size before designing
  • First page states the payoff in plain words
  • Type large enough to read at phone width
  • Nothing important within the outer margins of any page
  • Each page opens something the next resolves
  • Exported as a PDF at exact page size, no bleed or crop marks
  • Final page gives a specific next step

Frequently asked questions

What size should a LinkedIn carousel be?
Square or portrait pixel pages, exported as a PDF and posted as a document. The Carousel Size Guide lists the exact dimensions, page limits and safe margins.
How many slides should a carousel have?
Fewer than you think. Enough pages to make one argument properly, and no pages that exist only to fill the deck out.
Can I build a carousel from separate images?
No. LinkedIn carousels are document posts built from a PDF, where each page becomes one swipeable slide.
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