Mastering LinkedIn Post Dimensions: The Ultimate Size Guide

First impressions on LinkedIn happen in milliseconds. As you scroll through your feed, what makes you pause? Usually, it is a striking graphic, a clean infographic, or a sharp carousel that immediately catches your eye.

However, there is nothing quite as frustrating as spending hours crafting a post or designing a graphic, only to find that LinkedIn has awkwardly cropped out your headline, chopped off someone’s head in a profile banner, or turned your crisp text blurry.

Because over 60% of LinkedIn traffic originates on mobile devices, nailing your aspect ratios and pixel dimensions is non-negotiable. This comprehensive guide breaks down the exact LinkedIn post dimensions you need to make your content look professional, authoritative, and impossible to scroll past.

1. Single Image Feed Posts

When uploading a standard image directly to the feed, you have three primary aspect ratio choices. Choosing the right one depends entirely on your objective:

• Portrait (1080 × 1350 pixels | 4:5 Aspect Ratio) — The Engagement Winner
  • Best for: Infographics, text-heavy graphics, quote cards, and deep-dive visuals.
  • Why use it: This is the tallest format LinkedIn will render on mobile feeds without cutting off the top or bottom. It occupies the most screen real estate, forcing users to pause longer as they scroll.
• Square (1080 × 1080 pixels | 1:1 Aspect Ratio) — The Safe All-Rounder
  • Best for: General branding, product photos, and cross-platform sharing (Instagram/Facebook).
  • Why use it: It looks balanced and clean on both desktop monitors and mobile screens. It rarely suffers from unexpected display glitches.
• Landscape (1200 × 627 pixels | 1.91:1 Aspect Ratio) — The Link Preview Standard
  • Best for: Link previews, landscape photography, and corporate announcements.
  • Why use it: This is the default format automatically pulled when you paste an external URL into a post. While functional, it leaves plenty of white space on mobile screens, making it less effective for high-impact visual storytelling.

2. Carousels & Document Posts (PDFs)

Document carousels are one of the most powerful organic growth tools on LinkedIn. When uploaded as a multi-page PDF or presentation deck, users swipe through slide by slide.

• Recommended Size: 1080 × 1080 pixels (Square, 1:1) or 1080 × 1350 pixels (Portrait, 4:5).
• Max File Size: 100MB (though keeping individual slides optimized helps keep total sizes manageable).
• Pro Tip: Stick to a 4:5 portrait ratio for your slides if you want to maximize reading real estate on mobile devices. Ensure your typography is at least 24pt–32pt so it remains easily readable on smaller smartphone screens.

3. Video Post Dimensions

Video content continues to claim a massive share of user attention on professional networks.

• Square Video: 1080 × 1080 pixels (1:1 ratio)
• Widescreen / Horizontal Video: 1920 × 1080 pixels (16:9 ratio)
• Vertical Video: 1080 × 1350 pixels or 1080 × 1920 pixels (Supported for mobile-first storytelling)
• Specs to remember: Aim for 720p or 1080p resolution, keep MP4 as your format of choice, and remember that shorter clips (under 30 seconds) boast significantly higher completion rates.

4. Profiles and Company Pages (The Architecture)

Beyond everyday text and media posts, your profile and company page act as your digital landing page. If your banners look pixelated, visitors will question your attention to detail.

| Asset Type | Recommended Dimensions | Aspect Ratio / Notes |
| :— | :— | :— |
| Personal Profile Photo | 400 × 400 pixels | 1:1 — Keeps your face centered inside the circular crop. |
| Personal Background Banner | 1584 × 396 pixels | 4:1 — Watch out: The bottom-left corner is partially covered by your profile picture on desktop. |
| Company Page Logo | 400 × 400 pixels | 1:1 — Crisp and recognizable at a glance. |
| Company Cover Image | 1512 × 256 pixels | ~5.9:1 — Wide visual banner for brand storytelling. |

Quick Cheat Sheet: LinkedIn Image Sizes At-a-Glance

+-----------------------+---------------------+-------------------+
| Content Type          | Resolution (Pixels) | Aspect Ratio      |
+-----------------------+---------------------+-------------------+
| Feed Post (Portrait)  | 1080 x 1350         | 4:5               |
| Feed Post (Square)    | 1080 x 1080         | 1:1               |
| Feed Post (Landscape) | 1200 x 627          | 1.91:1            |
| Carousel Slides       | 1080 x 1350         | 4:5               |
| Profile Banner        | 1584 x 396          | 4:1               |
+-----------------------+---------------------+-------------------+

Pro-Tips for Perfect Execution

1. Mind the Margins: Keep critical text, logos, and focal points away from the absolute edges of your design. Different devices (tablets vs. iPhones vs. widescreen desktops) can micro-crop borders dynamically.
2. Export in the Right Format: Save your static graphics as JPEG or PNG. Avoid uploading modern formats like WEBP or HEIC directly if you are designing across various third-party apps, as they can occasionally trigger loading errors on mobile operating systems.
3. Focus on Aspect Ratio over Pixels: If you scale an image up or down, as long as you maintain the correct mathematical ratio (