Mastering LinkedIn Post Dimensions: The Ultimate Guide to Visual Engagement

When you scroll through your LinkedIn feed, some posts instantly catch your eye while others blend into the background. Often, the secret isn’t just the copywriting—it’s the formatting. Using the correct LinkedIn post dimensions ensures your graphics, photos, and videos look crisp, professional, and uncropped, keeping readers hooked on your content.

Why LinkedIn Dimensions Matter

LinkedIn handles images and videos differently across desktop and mobile devices. If you upload an image with the wrong aspect ratio, LinkedIn will automatically crop or shrink it, cutting off text, logos, or faces. Uploading properly sized media gives you more control over your visual presentation, protects your brand quality, and maximizes your screen real estate in the feed.

1. Single Image Post Dimensions

Single images are the bread and butter of LinkedIn content. Depending on your design style, you can choose from three main orientations:

• Square (1:1 Ratio) — Recommended: $1200 times 1200$ px (or $1080 times 1080$ px)
  • Best for: Infographics, quotes, headshots, and general announcements.
  • Why use it: It is the safest, most versatile all-around format. It displays predictably and neatly on both desktop and mobile feeds.
• Portrait / Vertical (4:5 Ratio) — Recommended: $1080 times 1350$ px
  • Best for: High-engagement mobile-first content, step-by-step breakdowns, and deep-dive visuals.
  • Why use it: Because over 60% of LinkedIn traffic happens on smartphones, portrait posts take up the most vertical feed space possible without getting cut off.
• Landscape (1.91:1 Ratio) — Recommended: $1200 times 627$ px
  • Best for: Real-world photography, landscape shots, and standard link previews.
  • Why use it: This is LinkedIn’s classic landscape format. Note that it takes up less vertical space, making it better suited for when your text caption does the heavy lifting.

2. Carousel Posts (Document Uploads)

Carousels (created by uploading a multi-page PDF document) are one of the most effective tools for driving swipe-through engagement and saving time-on-post.

• Slide Dimensions: $1080 times 1080$ px (Square) or $1080 times 1350$ px (Portrait)
• File Format: PDF only
• Pro Tip: Keep your typography large and legible, and always export your design cleanly as a high-resolution PDF before uploading.

3. Video Post Specifications

Native video uploads drastically outperform external links on LinkedIn. If you want your videos to look cinematic and professional, stick to these specifications:

• Landscape Video (16:9 Ratio): $1920 times 1080$ px
• Square Video (1:1 Ratio): $1080 times 1080$ px
• Vertical Video (9:16 Ratio): $1080 times 1920$ px
• File Limits: Max length of 10 minutes for standard posts; file size up to 5 GB (though files under 200 MB process much faster).
• Accessibility Note: Because most people browse LinkedIn on mute (especially during the workday), always bake text captions directly into your videos to retain viewers.

Quick-Reference Cheat Sheet

| Content Type | Recommended Dimensions | Aspect Ratio | File Format |
| :— | :— | :— | :— |
| Square Image | $1200 times 1200$ px (or $1080 times 1080$ px) | 1:1 | JPG, PNG, WebP |
| Portrait Image | $1080 times 1350$ px | 4:5 | JPG, PNG, WebP |
| Landscape Image | $1200 times 627$ px | 1.91:1 | JPG, PNG, WebP |
| Carousel Slides | $1080 times 1350$ px | 4:5 | PDF |
| Widescreen Video | $1920 times 1080$ px | 16:9 | MP4, MOV |

Key Best Practices for Crisp Graphics

1. Choose the Right File Type: Use PNG for graphics containing text, logos, or crisp line art to prevent fuzzy compression artifacts. Use JPG or WebP for standard photographs.
2. Keep it Under 5MB: While LinkedIn technically supports larger files for some image types, staying under 5MB ensures lightning-fast loading speeds across mobile connections.
3. Design with Margins: Keep your core text and critical visual elements centered. Avoid placing important details right on the outer edges, where minor mobile formatting tweaks might risk cropping them.