The Ultimate Guide to LinkedIn Post Dimensions

With over 60% of LinkedIn traffic now coming from mobile devices, capturing a user’s attention as they thumb through their feed is harder than ever. The secret weapon of top creators isn’t just clever copywriting—it’s exact formatting.

When your images or videos are optimized for LinkedIn’s preferred pixel dimensions, they render sharply, avoid awkward auto-cropping, and maximize valuable screen real estate.

1. Single Image Posts

Single images are the backbone of LinkedIn content, perfect for infographics, photography, data snapshots, or text-heavy announcements. You have three primary aspect ratio choices depending on your layout goals:

• Landscape (1.91:1) — 1200 × 627 pixels
  • Best for: News links, broad landscape photos, and formal announcements.
  • Why use it: It matches LinkedIn’s default Open Graph link-preview format, meaning no unexpected clipping when sharing a website link.
• Square (1:1) — 1080 × 1080 pixels (or 1200 × 1200 px)
  • Best for: Quote cards, clean infographics, and symmetrical branding.
  • Why use it: It’s the safest middle ground—it takes up slightly more space than landscape and looks identical on both desktop monitors and mobile screens.
• Portrait / Vertical (4:5) — 1080 × 1350 pixels (or 1200 × 1500 px)
  • Best for: Mobile-first storytelling, step-by-step guides, and deep-dive visuals.
  • Why use it: This is the engagement winner. Because it stretches down vertically on a smartphone, it forces the user to slow down their scroll, increasing dwell time.

Pro-Tip for Image Files: Keep individual image sizes under 5 MB. Save files as JPG or PNG using the sRGB color profile. Uploading files that are massively oversized will only cause LinkedIn’s compression algorithm to over-compress them, resulting in blurriness.

2. Document & Carousel Posts (PDFs)

Carousel posts (uploaded as PDFs) consistently pull some of the highest reach on the platform.

• Recommended Dimensions: 1080 × 1350 pixels (Portrait, 4:5 ratio) or 1080 × 1080 pixels (Square, 1:1 ratio) per slide.
• Format Requirements: PDF only (up to 300 pages and 100 MB max file size).
• Design Rule: Keep your text large and legible. On mobile screens, users will swipe through your slide deck quickly, so avoid crowding too much tiny text into a single page.

3. Video Post Specifications

Native video (uploaded directly rather than linked from YouTube) performs drastically better in the LinkedIn algorithm.

| Video Orientation | Resolution / Dimensions | Aspect Ratio | Best For |
| :— | :— | :— | :— |
| Landscape | 1920 × 1080 px | 16:9 | Widescreen interviews, webinar clips, and formal product demos |
| Square | 1080 × 1080 px | 1:1 | Safe, all-device feed compatibility |
| Vertical | 1080 × 1920 px | 9:16 | Reels-style mobile-first clips, shorts, and talking-head advice |

• File Limits: Up to 5 GB max file size.
• Duration: Between 3 seconds and 10 minutes on mobile (slightly longer limits apply on desktop).
• Accepted Formats: MP4, MOV, AVI, and WebM (MP4 is universally recommended).

4. Profile & Company Page Dimensions

If your personal profile or company page looks pixelated, it creates an immediate friction point for prospective clients or employers visiting your page.

• Personal Profile Photo: 400 × 400 pixels (minimum). Keep your face dead-center, as LinkedIn crops it into a strict circle.
• Personal Background Banner: 1584 × 396 pixels (4:1 ratio). Note: On mobile, the sides of your banner get cropped, so keep critical text or logos positioned toward the center.
• Company Page Cover Image: 1128 × 191 pixels.

Quick Reference Summary

To keep your design workflow seamless, memorize these golden rules before exporting your next batch of assets:

1. Single Images: 1200 × 627 px (Landscape) or 1080 × 1350 px (Portrait).
2. Carousels: Designed in portrait (1080 × 1350 px) and exported as a single multi-page PDF.
3. Videos: 1920 × 1080 px (Horizontal) or 1080 × 1920 px (Vertical).

By designing within these exact boundaries, you ensure that your personal brand or business page always looks crisp, professional, and built for maximum mobile engagement.