The Ultimate Guide to LinkedIn Post Dimensions: Nailing Your Visuals for Maximum Reach

You can spend two hours writing a brilliant, data-backed hook and a compelling narrative, but if your accompanying image looks blurry, pixelated, or awkwardly cropped, your engagement is going to stall.

On professional networks, visuals act as your stopping power. Because over 60% of LinkedIn traffic comes from mobile devices, how your post renders on a small screen can make or break its performance.

This comprehensive guide breaks down the exact, up-to-date dimensions for every LinkedIn post type, format, and profile asset so you can publish with confidence.

1. Single-Image Feed Posts

Single-image posts are the backbone of LinkedIn content strategy. Depending on the visual narrative you want to tell, LinkedIn supports three distinct orientations.

| Format | Recommended Dimensions | Aspect Ratio | Best Used For |
| :— | :— | :— | :— |
| Square | 1200 × 1200 px (or 1080 × 1080 px) | 1:1 | Infographics, quotes, and all-around feed consistency |
| Portrait / Vertical | 1080 × 1350 px | 4:5 | Maximizing real estate on mobile feeds |
| Landscape | 1200 × 627 px | 1.91:1 | Link previews and wide screenshots |

• Pro Tip for Images: Always design using crisp fonts (minimum 24px body text if you include text graphics) and export in PNG format for sharp vector lines and text, or JPG for standard high-resolution photography. Keep individual image files under 5 MB.

2. Document & Carousel Posts (PDFs)

LinkedIn document carousels consistently outperform standard text or single-image posts because they force users to swipe, drastically increasing your “dwell time”.

• Recommended Slide Size: 1080 × 1350 px (Portrait, 4:5 ratio) or 1080 × 1080 px (Square, 1:1 ratio).
• File Type: Upload as a PDF document (though PPTX and DOCX are accepted, PDF renders most reliably).
• Technical Limits: Maximum file size is 100 MB, and documents can span up to 300 pages (though 8 to 12 slides is the sweet spot for audience retention).

The Golden Rule of Carousels: Ensure every page in your deck matches the exact same aspect ratio. Mixing sizes causes LinkedIn’s viewer to dynamically letterbox or crop your content awkwardly.

3. Video Posts

Native video uploads receive significantly higher distribution and organic reach than third-party links (like YouTube or Vimeo).

• Landscape Video: 1920 × 1080 px (16:9 aspect ratio)
• Vertical Video: 1080 × 1920 px (9:16 aspect ratio — ideal for mobile viewing)
• Square Video: 1080 × 1080 px (1:1 aspect ratio)
• Video Limits: Formats like MP4 or MOV are heavily favored. Videos can range from 3 seconds up to 10–15 minutes long, with a practical file size ceiling of 5 GB.
• Accessibility Note: Because the majority of professionals browse LinkedIn on mute during work hours, always bake captions or text overlays directly into your video files.

4. Profile and Company Page Assets

Your personal brand or company presence relies heavily on profile architecture. If your cover photo dimensions are wrong, mobile apps will brutally crop out your text and branding.

• Personal Profile Photo: 400 × 400 px (1:1 square; displayed as a circle, so keep your face and core subjects centered).
• Personal Background Banner: 1584 × 396 px (4:1 ratio). Safe Zone: Keep crucial text and logos inside the centered 1200 × 300 px zone to prevent mobile clipping.
• Company Page Logo: 400 × 400 px
• Company Page Cover Photo: 1128 × 191 px

Summary Checklist to Avoid Common Pitfalls

1. Avoid low-resolution assets: Never stretch a small image; LinkedIn will upscale it and create heavy pixelation.
2. Mind the color space: Stick to sRGB. If you upload files using the CMYK color profile (meant for physical print), your web colors will look muted and washed out.
3. Test before you broadcast: Always upload your asset and preview it on a smartphone before hitting publish to ensure your text isn’t cut off by UI elements.