LinkedIn Carousel Size in 2026: Exact Dimensions, PDF Specs and Safe Zones

LinkedIn Carousel Aspect Ratio: Square, Portrait or Landscape?

The LinkedIn carousel aspect ratio you pick changes how much of the feed you own.

• 4:5 portrait (1080 x 1350): Takes up more vertical space on a phone, so your slide is bigger and the text is easier to read. This is our pick for most B2B carousels, since most people scroll LinkedIn on mobile.
• 1:1 square (1080 x 1080): The safest all-rounder. It looks balanced on mobile and desktop, and you can reuse the same slides elsewhere. It is also the size you will see most often in guides.
• 16:9 landscape (1920 x 1080): Feels like a classic presentation. It works well for desktop viewers but shrinks your text on a phone, so you need larger type.

One rule beats all the others: use one aspect ratio for every slide. Mixing square and portrait pages in the same PDF makes the swipe feel jumpy and can leave odd gaps. Pick a format, then stick with it.

If you also post carousels on Instagram, our Instagram carousel size guide covers the same 1080 x 1350 portrait idea there, so one design can serve both.

LinkedIn Document Post Size and File Requirements

Here is what LinkedIn's Help Center lists for document uploads. See Upload and share documents on LinkedIn and the Document uploads FAQ for the current wording.

The 100 MB and 300 page numbers are ceilings, not goals. Third-party media references such as the Ayrshare LinkedIn media guidelines list the same limits. A 10-slide carousel should land well under 10 MB. If yours is bigger, your images are probably oversized or uncompressed.

Two practical notes. First, export as PDF rather than uploading a PowerPoint file, because PDF locks in your fonts and spacing. Second, a document post has its own title field when you upload, so give it a real headline instead of leaving the file name (like "final_v3.pdf") to show.

LinkedIn Carousel Safe Zone: Where to Put Your Text

The LinkedIn carousel safe zone is the area where your text and key visuals can sit without getting cropped, covered or crowded. LinkedIn overlays navigation arrows, a page counter and the slide edges on the viewer, and small screens trim the rest.

A simple rule that works on every format:

• Keep all important content about 80 px inside every edge on a 1080 px wide canvas.
• On a 1080 x 1080 slide, that leaves a central area of about 920 x 920 px for text.
• On a 1080 x 1350 slide, you get roughly 920 x 1190 px.
• Leave a little extra breathing room at the bottom, where page counters and the slide number can sit over your design.

This margin is a design guideline, not a number from LinkedIn, so treat it as a sensible buffer. Background colors and patterns can run all the way to the edge. Only text, logos and faces need to stay inside the zone.

Font Sizes That Stay Readable on Mobile

Most of your audience sees your slide at roughly the width of a phone screen, which means a 1080 px canvas gets shrunk to around a third of its size. Text that looked fine on your laptop turns into a blur.

Use these starting points on a 1080 px wide canvas:

• Headlines: 60 to 90 px
• Body text: 36 to 48 px (never below 32 px)
• Captions and footers: 28 px at the smallest
• Words per slide: 25 to 40 is plenty. If it feels like a paragraph, split it.

Add strong contrast (dark text on a light background, or the reverse), and stick to one or two fonts. If you need to squint on your phone at arm's length, your audience will too.

How Many Slides Should a LinkedIn Carousel Have?

The platform limit is 300 pages, but nobody wants to swipe through that. Most guides land on the same range:

• Sweet spot: 6 to 12 slides
• Too short: 3 to 4 slides usually feels thin
• Too long: 15 or more risks viewers dropping off before the end

The right count depends on your topic. A tight tip needs 6 slides. A step-by-step process might need 10. Let the content decide, then cut anything that does not earn its slide.

Cover Slide Tips

Slide one is your thumbnail, headline and hook in one. It decides whether people swipe at all.

• Lead with a clear promise: a number, a result or a sharp question
• Use your biggest type on this slide
• Show a swipe cue, like an arrow or "Swipe" label, so people know there is more
• Keep the cover inside the safe zone, since it is the slide most likely to be seen in notifications and shares

The last slide matters too. End with one clear action: follow, comment or visit a link, not all three.

How the Document Title and Caption Work

When you upload a document, LinkedIn asks for a document title. Think of it as a headline for the file, separate from your post caption. Use plain words that tell people what they will learn.

Your caption sits above the carousel. Keep the first line strong, since LinkedIn cuts it off behind a "see more" link. Mention what is inside the carousel and invite a reply. For caption ideas, see our guide to writing social media captions that actually get engagement.

How to Make and Export a LinkedIn Carousel PDF

Here is the whole process, start to finish.

Step 1: Pick your size

Choose 1080 x 1350 px for portrait or 1080 x 1080 px for square. With Krumzi, you can pick from 44 platform size presets across 10 platforms, or enter custom dimensions from 50 to 8000 px.

Step 2: Describe or paste your content

Write a prompt like "a 9-slide LinkedIn carousel on how to run a quarterly content audit". Krumzi builds the slides from scratch, and it can even take a pasted article URL and turn it into a carousel. See our roundup of the best AI carousel makers if you are comparing options, or try the AI carousel maker directly.

Step 3: Edit and check the safe zone

Everything stays fully editable, so tweak headlines, swap colors and check that text sits inside your margins. If you have a brand kit set up (Pro and up), it is applied automatically.

Step 4: Export as a multi-page PDF

Export the carousel as a multi-page PDF, which is the file format LinkedIn document posts need. You can select which slides to include, or export separate images in a zip if you want them for other platforms.

Step 5: Upload to LinkedIn

Krumzi does not publish to LinkedIn, so post it yourself. Start a post, choose the document option, upload your PDF, add a document title, write your caption and publish.

Common LinkedIn Carousel Size Mistakes

• Mixing aspect ratios: Square and portrait pages in one PDF create a jumpy swipe. Pick one.
• Designing too small: Starting at 500 px wide and scaling up gives you blurry slides. Start at 1080 px or higher.
• Tiny text: Anything under about 32 px on a 1080 px canvas gets hard to read on a phone.
• Text too close to the edge: Without a safe zone, headlines clip or collide with the viewer's controls.
• Huge files: Uncompressed images can push a PDF past 100 MB. Compress or reduce image sizes first.
• Uploading separate images: Organic LinkedIn carousels are documents. A set of loose PNGs will not swipe like a carousel, so combine them into one PDF.
• Wrong file name or title: Leaving "Untitled.pdf" as your document title wastes your first impression.

For a wider view of sizes across networks, bookmark our social media image sizes guide.

Frequently Asked Questions

What is the best size for a LinkedIn carousel?

The best LinkedIn carousel size is 1080 x 1350 px (4:5 portrait) for most mobile-first audiences, or 1080 x 1080 px (1:1 square) as a safe all-rounder. Export it as one PDF. LinkedIn does not enforce one ratio, so the key is using the same size on every slide.

What file format should a LinkedIn carousel be?

PDF is the best choice. LinkedIn accepts PDF, PPT, PPTX, DOC and DOCX for document posts, but PDF keeps your fonts and layout consistent across devices.

What is the maximum file size for a LinkedIn carousel?

LinkedIn's document limit is 100 MB and 300 pages. In practice, a carousel should stay far below that. Aim for under 10 MB so it loads quickly on mobile connections.

How many slides should a LinkedIn carousel have?

Between 6 and 12 slides works best for most topics. Fewer than 4 can feel thin, and 15 or more often loses viewers before the final slide.

Can I use a 1080 x 1350 carousel on LinkedIn?

Yes. A 1080 x 1350 (4:5) portrait PDF works well on LinkedIn and fills more of a phone screen than a square. Keep your text about 80 px inside the edges and use the same size on every page.