LinkedIn Carousel Size: Dimensions, Format, and Design Tips

LinkedIn carousels — officially called document posts — are the highest-engagement format on the platform. They consistently outperform text posts, single images, and even video in terms of impressions and dwell time. But getting the dimensions wrong means cropped text, blurry slides, and wasted effort.

Here are the exact LinkedIn carousel size specs you need, the best format to use, and practical design tips that keep your audience swiping.

LinkedIn Carousel Dimensions at a Glance

LinkedIn accepts document posts as PDFs (or PPT/PPTX/DOC/DOCX files), and each page becomes a swipeable slide. The platform renders them at specific sizes depending on the aspect ratio you choose.

The short answer: Use 1080 × 1080 px (square) or 1080 × 1350 px (portrait) at 150+ DPI, exported as PDF. Portrait takes up more screen real estate on mobile, which is where most LinkedIn browsing happens.

Square vs. Portrait: Which LinkedIn Carousel Size to Pick

Both work. The right choice depends on your content and where your audience reads.

Square (1080 × 1080) is the safe default. It displays consistently across desktop and mobile, leaves room for the post caption visible above the carousel, and matches the standard Instagram slide format — useful if you repurpose content across platforms.

Portrait (1080 × 1350) dominates on mobile feeds. It fills more vertical screen space, which means fewer competing posts visible while someone views your carousel. The tradeoff: on desktop, LinkedIn adds padding around portrait slides, making them appear slightly smaller within the feed.

Landscape (1920 × 1080) is rarely worth it. Slides appear small on mobile, and the horizontal format fights against the vertical scroll behavior of every social feed. Skip it unless you have a very specific reason (data dashboards, comparison screenshots).

For most creators, portrait is the stronger choice. Mobile users make up the majority of LinkedIn traffic, and that extra vertical space keeps eyes on your content longer.

The Best File Format for LinkedIn Carousels

PDF wins. Here is why:

• Consistent rendering. PowerPoint and Word files get converted server-side by LinkedIn, and that conversion occasionally mangles fonts, spacing, or transparency. PDFs render exactly as designed.
• Smaller file sizes. A well-exported PDF with compressed images is typically 60-80% smaller than the equivalent PPTX.
• Universal tooling. Every design tool — Canva, Figma, Adobe, Google Slides — exports to PDF.

Export your slides as a single multi-page PDF. Each page becomes one swipeable slide. If your individual slide images are PNGs or JPGs, you can convert them to a single PDF before uploading.

Image Optimization Before Export

Each slide should use images that are already optimized. Uncompressed PNGs at 1080 × 1350 can be 3-5 MB per slide — multiply that by 10 slides and you are pushing 50 MB for a single carousel.

Resize your slide images to exactly 1080 × 1350 (or 1080 × 1080) before placing them into your design tool. This avoids the double-compression problem where your design tool downscales a massive image and introduces artifacts.

How to Create a LinkedIn Carousel: Step by Step

1. Choose your dimensions. Set your canvas to 1080 × 1350 px (portrait) or 1080 × 1080 px (square) in your design tool.
2. Design your slides. Keep text large (minimum 24px equivalent at export size). One idea per slide. Strong visual hierarchy.
3. Resize and optimize images. Use Pixotter's resize tool to get every image to the exact pixel dimensions before placing them in slides.
4. Export as PDF. Multi-page, sRGB color space, 150+ DPI.
5. Check file size. Must be under 100 MB. If it is too large, compress your images further or reduce the image file size before re-exporting.
6. Upload to LinkedIn. Create a new post, click the document icon (looks like a page with a folded corner), upload your PDF, add a title, and write your caption.

Design Tips That Increase Engagement

Keep Text Readable at a Glance

The number one mistake: cramming too much text onto a single slide. LinkedIn carousels are consumed on phone screens. Use 28-40px font sizes (at 1080px width), limit each slide to one key point, and leave generous whitespace.

Design a Cover Slide That Earns the Swipe

Your first slide is the hook. It appears in the feed alongside your caption text. Treat it like a thumbnail: bold headline, clear value proposition, maybe a number ("7 Tips..." or "The 2026 Guide to..."). Skip your logo on the cover — nobody swipes because of a logo.

Add Navigation Cues

Include a subtle "Swipe →" indicator on your first slide and slide numbers (1/10, 2/10) on subsequent slides. This reduces drop-off because readers know how far along they are and how much is left.

End With a Call to Action

Your last slide should tell the reader what to do next: follow you, comment their take, visit a link in the comments, or save the post for later. Do not end on a generic "Thanks for reading" slide — that is a wasted opportunity.

Maintain Brand Consistency

Use the same colors, fonts, and layout structure across all slides. This builds pattern recognition in the feed. When someone sees your color palette while scrolling, they should immediately associate it with your content — before reading a word.

For more on optimizing visuals for LinkedIn, see our guides on LinkedIn post image sizes and LinkedIn banner dimensions.

Common LinkedIn Carousel Mistakes to Avoid

• Using JPG slides directly. LinkedIn does not support multi-image carousels like Instagram. You must upload a document (PDF/PPTX/DOCX). Individual JPGs will be posted as a photo gallery, not a swipeable carousel.
• Ignoring the safe zone. LinkedIn overlays a gradient and your profile info at the bottom of the first slide. Keep critical content away from the bottom 100 pixels of your cover slide.
• Too many slides with too little content. Ten slides of one sentence each feels like padding. Five dense, well-designed slides outperform ten thin ones.
• Forgetting mobile preview. Always preview your carousel on a phone before posting. Text that looks fine on a 27-inch monitor can be illegible on a 6-inch screen.

FAQ

What is the best LinkedIn carousel size in pixels?

The best LinkedIn carousel size is 1080 × 1350 pixels (portrait) for maximum mobile feed presence, or 1080 × 1080 pixels (square) for cross-platform consistency. Both render sharply on desktop and mobile.

What file format should I use for LinkedIn carousels?

Use PDF. It renders consistently, produces smaller file sizes than PPTX, and avoids font and spacing issues that occur when LinkedIn converts PowerPoint files server-side.

How many slides can a LinkedIn carousel have?

LinkedIn allows up to 300 slides per document post. However, engagement data suggests that 8-12 slides is the sweet spot. Most readers drop off after 10-15 slides regardless of content quality.

What is the maximum file size for a LinkedIn carousel?

The maximum file size is 100 MB. For a typical 10-slide carousel with optimized images, you should aim for 5-15 MB total. If your PDF exceeds this range, your images likely need compression.

Can I use landscape orientation for LinkedIn carousels?

You can, but it is not recommended. Landscape slides (1920 × 1080) appear small on mobile devices and waste vertical feed space. Square or portrait orientations consistently outperform landscape in engagement metrics.

How do I convert images to a PDF carousel for LinkedIn?

Export each slide as a PNG or JPG at your chosen dimensions, then combine them into a single multi-page PDF. You can convert your images to PDF format directly, or use any design tool (Canva, Figma, Google Slides) that supports multi-page PDF export.