The Ultimate Guide to LinkedIn Post Image Sizes: Master Your Visual Authority

In the professional world, first impressions are forged in milliseconds. When a potential client, hiring manager, or industry peer scrolls through their LinkedIn feed, your post competes with a relentless stream of text, data, and multimedia. What stops them in their tracks? More often than not, it’s a striking, crystal-clear visual.

However, even the most profound insight or breakthrough data visualization will fall flat if it is awkwardly cropped, blurry, or pixelated. Understanding the correct dimensions for LinkedIn post images is no longer just a technical detail for graphic designers—it is a core pillar of modern digital branding.

Whether you are publishing a thought-leadership graphic, sharing a milestone photo, or launching a targeted campaign, this comprehensive guide covers everything you need to know about optimizing your visuals for maximum engagement.

Why LinkedIn Image Dimensions Matter

Before diving into the numbers, it helps to understand why format specs matter. LinkedIn handles image rendering dynamically across mobile devices, tablets, and desktop monitors. If your image doesn’t align with supported aspect ratios, the platform will automatically crop or resize it, often cutting off vital text, logos, or faces.

Furthermore, using the right dimensions prevents compression artifacts. Designing directly to the recommended resolution ensures your content looks crisp, intentional, and professional, signaling to your network that you value quality.

The Core LinkedIn Post Image Sizes

Depending on the nature of your content, you can choose from three primary aspect ratios for standard single-image feed posts.

1. The Portrait Post (The Mobile Favorite)

• Recommended Dimensions: 1080 × 1350 pixels
• Aspect Ratio: 4:5
• Best For: Text-heavy graphics, infographics, step-by-step breakdowns, and deep-dive charts.
• Why it works: Because the vast majority of LinkedIn users consume content on mobile devices, portrait orientation dominates vertical screen real estate. It forces the viewer to slow down their scroll, giving your content more screen-time exposure than any other format.

2. The Square Post (The Versatile Classic)

• Recommended Dimensions: 1080 × 1080 pixels
• Aspect Ratio: 1:1
• Best For: Multi-purpose brand assets, product photos, and cross-platform sharing.
• Why it works: If you plan to syndicate the exact same graphic across Instagram, Facebook, and LinkedIn, a 1:1 square is your safest bet. It renders cleanly and predictably on both desktop feeds and mobile layouts without unexpected horizontal or vertical clipping.

3. The Landscape Post (The Link-Sharing Standard)

• Recommended Dimensions: 1200 × 627 pixels
• Aspect Ratio: 1.91:1
• Best For: Link preview cards (when sharing external blog posts, news, or website URLs) and wide landscape photography.
• Why it works: When you drop an external link into a LinkedIn post, the platform automatically generates a preview card. Matching the 1200 × 627 pixel specification ensures your chosen open-graph image spans cleanly across the preview box without awkward borders or edge clipping.

Beyond Standard Posts: Special Formats

Different types of professional updates require specialized sizing. Keep these dimensions handy for your next content sprint:

• Carousels & Document PDFs (Slide Decks):
  • Recommended Size: 1080 × 1080 pixels (1:1) or 1080 × 1350 pixels (4:5).
  • Tip: PDFs uploaded as documents render as swipeable carousels. Portrait (4:5) slides offer a massive canvas for educational, step-by-step presentations.
• Article and Newsletter Cover Images:
  • Recommended Size: 1920 × 1080 pixels (16:9 ratio). These serve as the grand banner welcoming readers to your long-form LinkedIn articles.
• Personal Profile & Company Branding:
  • Profile Photo: 400 × 400 pixels (1:1 circle crop).
  • Personal Cover Banner: 1584 × 396 pixels (4:1).
  • Company Page Cover: 1512 × 256 pixels.

Technical Constraints & Best Practices

To ensure a seamless upload process every time, keep these technical guardrails in mind:

1. File Size Caps: Standard photo uploads are capped at 5MB, while document uploads (like PDF carousels) can go up to 100MB.
2. File Formats: Stick to JPEG for standard photographs to keep file sizes lean, and use PNG for graphics featuring sharp text, vector art, or logos. WebP is also widely supported.
3. The “Safe Zone” Rule: Avoid placing essential text, logos, or facial features right on the absolute outer borders of your canvas. Keep critical information centered within the middle 80% of the frame to guard against minor responsive cropping across varying screen sizes.
4. Don’t Forget Alt Text: Always add descriptive alternative text before publishing your image. It boosts your content’s accessibility for visually impaired users and contributes positively to contextual indexing.

Summary Cheat Sheet

| Content Type | Recommended Resolution | Aspect Ratio |
| :— | :— | :— |
| Portrait Post | 1080 × 1350 px | 4:5 |
| Square Post | 1080 × 1080 px | 1:1 |
| Landscape / Link Post | 1200 × 627 px | 1.91:1 |
| Carousel / PDF Slide | 1080 × 1350 px | 4:5 |
| Article Cover | 1920 × 1080 px | 16:9 |

Final Thoughts

Mastering LinkedIn image sizes isn’t just about avoiding ugly cutoffs—it’s about commanding attention in a competitive digital ecosystem. By tailoring your image dimensions to match how users actually hold their phones and scroll through their feeds, you remove friction from the viewing experience and put your best professional foot forward. Implement these dimensions in your next design workflow and watch your visual engagement climb.