LinkedIn Post Dimensions & Image Sizes Guide 2026

The Ultimate Guide to LinkedIn Post Dimensions

Getting your visual content right on LinkedIn is a game-changer for engagement. Whether you are building your personal brand or managing a company page, uploading an image or video with the wrong aspect ratio can result in awkward cropping, blurry rendering, and lower visibility in the feed.

This comprehensive guide breaks down the exact dimensions, aspect ratios, and format requirements for all major LinkedIn post types.

1. Single Image Posts

Single images are the backbone of LinkedIn content, perfect for infographics, photography, quote cards, and announcements. LinkedIn supports three primary image layouts for feed posts:

• Portrait (1080 × 1350 pixels | 4:5 Aspect Ratio): This is the gold standard for maximizing mobile screen real estate. Because a large portion of LinkedIn traffic is mobile-first, taller images push past surrounding text and grab attention longer.
• Square (1080 × 1080 pixels | 1:1 Aspect Ratio): A safe, versatile, and clean layout that displays uniformly across both desktop monitors and mobile screens.
• Landscape (1200 × 627 pixels | 1.91:1 Aspect Ratio): The traditional format, best utilized when sharing URL link previews or wide panoramic graphics.

Pro-Tips for Images:

• File Formats: Use PNG for graphics containing text, logos, or stark lines to keep them sharp. Use JPG or WebP for photographic images.
• File Size Limit: Keep your image files under 5MB.

2. Carousel & Document Posts

Document posts (PDF slide decks that display as horizontal carousels) are one of the most effective organic formats for thought leadership.

• Recommended Slide Dimensions: 1080 × 1080 pixels (Square, 1:1) or 1080 × 1350 pixels (Portrait, 4:5).
• File Type: PDF is preferred, though PPTX and DOCX are also accepted.
• File Size Limit: Up to 100MB maximum per document.

3. Video Posts

Native video uploads command high engagement on LinkedIn, but they must be correctly formatted to avoid letterboxing or pixelation.

• Landscape HD (1920 × 1080 pixels | 16:9 Aspect Ratio): Ideal for desktop views, professional interviews, and webinars.
• Vertical / Mobile-First (1080 × 1350 pixels | 4:5 Aspect Ratio): Excellent for speaking-head clips or dynamic vertical walkthroughs optimized for phones.
• Square (1080 × 1080 pixels | 1:1 Aspect Ratio): A reliable hybrid format that fits well in any feed.

Video Specifications:

• File Format: MP4 (using H.264 video codec and AAC audio).
• Duration: Minimum of 3 seconds up to 15 minutes for personal accounts (desktop uploads).
• File Size Limit: Up to 5GB.
• Accessibility: Always include burned-in or uploaded captions, as the majority of users watch feed videos on mute.

4. Profile & Cover Images

Your personal brand presence starts with your profile aesthetics. Ensure your graphics aren’t cut off by using these pixel parameters:

• Profile Picture: 400 × 400 pixels (1:1 ratio, cropped into a circle). Keep your face clearly centered with breathing room around the edges.
• Profile Banner / Background: 1584 × 396 pixels (4:1 ratio). Note: On mobile devices, the edges of your banner are cropped heavily, so keep important text and graphics locked into the center zone.

Quick Reference Cheat Sheet

| Content Type | Optimal Dimensions | Aspect Ratio | Max File Size |
| :— | :— | :— | :— |
| Portrait Post | 1080 × 1350 px | 4:5 | 5 MB |
| Square Post | 1080 × 1080 px | 1:1 | 5 MB |
| Landscape Post | 1200 × 627 px | 1.91:1 | 5 MB |
| Landscape Video | 1920 × 1080 px | 16:9 | 5 GB |
| Profile Photo | 400 × 400 px | 1:1 | 8 MB |
| Profile Banner | 1584 × 396 px | 4:1 | 8 MB |

By designing your assets to these exact specifications, your content will maintain crisp visual quality, catch the eye while scrolling, and project instant professionalism.