The Ultimate Guide to LinkedIn Post Dimensions: Maximize Your Reach and Impact

When it comes to building a professional brand or growing a company presence on LinkedIn, content is king. However, even the most insightful thought-leadership text or groundbreaking data can fall flat if paired with a pixelated, awkwardly cropped, or poorly formatted visual.

Because over 60% of LinkedIn users browse via mobile devices, understanding the platform’s exact dimensions isn’t just about aesthetics—it’s a critical algorithmic strategy. When your visuals fit the container perfectly, users stay longer, engage more frequently, and the algorithm rewards your post with broader organic reach.

This comprehensive guide breaks down the optimal LinkedIn post dimensions, aspect ratios, and format requirements.

1. Single Image Feed Post Dimensions

Single images are the most versatile way to stop the scroll. Depending on the layout that best suits your message—whether it’s a photograph, an infographic, or a quote card—you have three primary options:

• Landscape (1.91:1 Ratio): 1200 x 627 pixels
  • Best for: Link previews, traditional landscape photography, and corporate announcements.
  • Tip: While it’s LinkedIn’s traditional format, it takes up the least amount of vertical space on mobile feeds.
• Square (1:1 Ratio): 1080 x 1080 pixels
  • Best for: Infographics, clean quote cards, and balanced brand messaging.
  • Tip: This is the safest “all-purpose” format because it looks equally sharp on desktop monitors and mobile screens without unexpected cropping.
• Portrait (4:5 Ratio): 1080 x 1350 pixels
  • Best for: High-performing thought-leadership text graphics, deep-dive data visualizers, and maximizing mobile screen real estate.
  • Tip: Because portrait images force mobile users to scroll past more vertical pixels, they consistently secure higher dwell times and engagement rates.

Technical Guardrails: Keep your file sizes under 5MB and use JPG or PNG for sharp typography, or WebP for efficient compression.

2. Document & Carousel Post Dimensions (PDF Slides)

Carousels (uploaded natively as multi-page PDF documents) are among the most engaging content formats on LinkedIn. They turn your post into an interactive slide deck that users swipe through.

• Recommended Dimensions: 1080 x 1080 pixels (Square) or 1080 x 1350 pixels (Portrait)
• Maximum File Size: 100MB (though individual slides should remain lightweight).
• File Format: PDF (preferred), PPTX, or DOCX.

Pro-Tip: Stick to a consistent aspect ratio across all pages of your deck. If you mix landscape and portrait pages within a single PDF, LinkedIn will handle the layout unpredictably, leading to awkward whitespace or cropping.

3. Video Post Dimensions

Video content continues to expand its footprint on professional networks. Whether you are sharing a quick tip, a webinar snippet, or a company culture highlight, getting the resolution right prevents unwanted black bars.

• Square Video: 1080 x 1080 pixels (1:1 aspect ratio)
• Horizontal / Landscape Video: 1920 x 1080 pixels (16:9 aspect ratio)
• Vertical Video: 1080 x 1350 pixels or 1080 x 1920 pixels (4:5 or 9:16 aspect ratio)
• Specifications:
  • Maximum File Size: Up to 5 GB
  • Length: From 3 seconds up to 10–15 minutes (shorter clips generally retain viewers better).
  • Format: MP4 is universally recommended.

4. Quick Reference Cheat Sheet: Profiles & Banners

Beyond your daily feed posts, your profile and company page act as your digital storefronts. Make sure they aren’t cropped weirdly on mobile devices by sticking to these foundational sizes:

| Asset Type | Optimal Dimensions | Aspect Ratio | Notes |
| :— | :— | :— | :— |
| Personal Profile Photo | 400 x 400 px | 1:1 | Displayed as a circle; keep your face centered. |
| Personal Background Banner | 1584 x 396 px | 4:1 | Keep vital details in the center; avoid the bottom-left corner where the profile picture overlaps. |
| Company Page Logo | 400 x 400 px | 1:1 | Clear vector graphics or high-res square files work best. |
| Company Cover Image | 1128 x 191 px | ~5.9:1 | Scales dynamically across desktop and mobile screens. |

Summary Checklist for Designers & Creators

1. Prioritize Portrait (1080 x 1350 px) for feed graphics when you want maximum mobile engagement.
2. Stick to Square (1080 x 1080 px) for universal consistency across carousels and general feed posts.
3. Double-check safe zones on profile banners so text isn’t hidden behind your profile picture.
4. Save graphics as PNGs if they contain crisp text, and JPGs for photographic content to balance clarity and file weight.

By aligning your creative assets with these dimensions, you ensure your content looks professional, clean, and optimized to capture attention instantly.