The Ultimate Guide to LinkedIn Post Dimensions: Hit the Sweet Spot for Maximum Engagement

Picture this: You’ve spent hours drafting a profound insight, refining your hooks, and crafting a killer call-to-action. You attach a striking graphic, hit “Post,” and eagerly wait for the comments to roll in. Instead, you check back later to find your meticulously designed text awkwardly clipped at the edges, your company logo chopped in half, and your engagement metrics looking flatter than a pancake.

What went wrong? Chances are, your post dimensions were mismatched.

On a platform where visual hierarchy dictates whether a user stops scrolling or keeps moving, getting your pixels right is just as important as the words you write. Because over 60% of LinkedIn traffic now flows through mobile devices, understanding how the feed handles different layouts can make or break your reach.

This comprehensive guide breaks down the exact LinkedIn post dimensions you need to know, covering everything from single images and carousels to videos and profile assets.

1. Single Image Posts: Choosing Your Aspect Ratio

When uploading standalone images, LinkedIn offers flexibility, but choosing the right format determines how much screen real estate you command.

• Portrait (1080 × 1350 pixels | 4:5 Aspect Ratio): The Engagement King. If your goal is to maximize visibility on mobile phones, this is your go-to format. It stretches vertically as far as LinkedIn’s feed allows without getting cropped, forcing users to pause longer as they scroll past. Use this for infographics, data breakdowns, and text-heavy graphics.
• Square (1080 × 1080 pixels | 1:1 Aspect Ratio): The Safe All-Rounder. Squares render cleanly on both desktop monitors and mobile screens. They are brilliant for quote cards, clean product shots, and headshots. If you plan to cross-post your visual assets to Instagram or Facebook, square is your safest bet.
• Landscape (1200 × 627 pixels | 1.91:1 Aspect Ratio): The Link Preview Standard. This is LinkedIn’s classic widescreen layout. While it doesn’t take up much vertical room on mobile, it is the gold standard when sharing external article links or horizontal photography.

Pro Tip: Always design with a resolution of at least 1080 pixels on your image’s shortest edge to keep text crisp and prevent compression artifacts. Keep your file size under 5MB, and stick to JPG or PNG formats.

2. Carousel Posts (Document Shares): Swipe-Worthy Formats

Carousels—created by uploading multi-page PDF documents—remain one of the highest-performing content formats on LinkedIn for educating audiences and building authority.

• Recommended Slide Dimensions: 1080 × 1080 px (Square) or 1080 × 1350 px (Portrait)
• File Format: PDF only
• Limits: Up to 100 slides (though 5 to 10 slides is the sweet spot for retention) and a maximum file size of 100 MB.

Because users swipe horizontally through documents, portrait and square slides look exceptionally clean. Ensure text is kept large and centered away from extreme borders so it remains readable when scaled down on smaller screens.

3. Video Posts: Capturing Moving Attention

Native video content is heavily favored by the LinkedIn algorithm, but uploading distorted or low-resolution clips will hurt your watch time.

• Landscape (1920 × 1080 pixels | 16:9): Great for traditional widescreen or interview-style footage.
• Square (1080 × 1080 pixels | 1:1): Balances nicely across mobile and desktop feeds.
• Vertical / Portrait (1080 × 1350 or 1080 × 1900 pixels | 9:16): Highly effective for mobile-first short-form content.
• File Specs: MP4 format is strongly recommended, with file sizes up to 5 GB and durations ranging from 3 seconds up to 10–15 minutes.

4. Profile and Company Page Foundations

Your post dimensions matter, but your profile real estate sets your digital storefront. Don’t let awkward cropping ruin your first impression:

• Personal Profile Photo: 400 × 400 pixels (1:1 ratio, cropped into a circle). Keep your face clearly centered.
• Personal Background Banner: 1584 × 396 pixels (4:1 ratio). Warning: On mobile devices, LinkedIn aggressively crops the sides of your banner. Keep crucial branding and text centered.
• Company Page Logo: 400 × 400 pixels minimum.
• Company Page Cover Image: 1512 × 256 pixels.

Quick Summary Cheat Sheet

| Content Type | Optimal Dimensions | Aspect Ratio | File Format |
| :— | :— | :— | :— |
| Portrait Post | 1080 × 1350 px | 4:5 | JPG, PNG |
| Square Post | 1080 × 1080 px | 1:1 | JPG, PNG |
| Landscape / Link Preview | 1200 × 627 px | 1.91:1 | JPG, PNG |
| Carousel Slides | 1080 × 1350 px | 4:5 | PDF |
| Video Post | 1920 × 1080 px | 16:9 | MP4 |

Final Thoughts: Design Smart, Not Hard

Mastering LinkedIn dimensions isn’t about pixel-pushing perfectionism—it’s about removing friction for your audience. When your graphics load crisply, fill the right amount of feed space, and dodge automated mobile cropping, your content instantly looks more professional. Align your visual strategy with these dimensions, and watch your engagement metrics climb.