LinkedIn Post Image Size Guide: Dimensions & Specs 2026

The Ultimate Guide to LinkedIn Post Image Sizes

Visual content rules the professional feed. Whether you are building a personal brand, promoting a company page, or running a targeted ad campaign, adding an image to your LinkedIn post dramatically boosts engagement. However, nothing kills a polished professional aesthetic faster than an awkward crop, a blurry upscaled graphic, or text cut off by arbitrary borders.

To make sure your content always looks sharp and professional, here is the complete breakdown of the best image sizes and dimensions for LinkedIn posts.

1. Single Image Feed Posts

When sharing a standalone photo, graphic, or infographic, LinkedIn supports three primary aspect ratios. Choosing the right one depends on how much screen real estate you want to command.

• Landscape (1.91:1 Aspect Ratio)
  • Recommended Size: 1200 x 627 pixels
  • Best for: Link previews, landscape photography, and traditional horizontal banners. This format fits the standard desktop feed card cleanly without unexpected cropping.
• Square (1:1 Aspect Ratio)
  • Recommended Size: 1080 x 1080 pixels (or 1200 x 1200 pixels)
  • Best for: General graphics, product shots, and cross-platform sharing from Instagram. Square posts offer a balanced presence on both mobile and desktop screens.
• Vertical / Portrait (4:5 Aspect Ratio)
  • Recommended Size: 1080 x 1350 pixels (or 1200 x 1500 pixels)
  • Best for: Mobile-first content, infographics, and step-by-step guides. Because most users browse LinkedIn on their smartphones, vertical posts take up more vertical screen space, naturally drawing more eyes as users scroll.

2. Document and Carousel Posts (PDFs / Slide Decks)

Carousel posts—uploaded as multi-page documents (PDF, PPTX, or DOCX)—are one of the most effective ways to drive high engagement and dwell time on LinkedIn.

• Square Slides: 1080 x 1080 pixels (1:1 ratio)
• Portrait Slides: 1080 x 1350 pixels (4:5 ratio)
• File Limits: Maximum of 100 MB per document file.

Pro Tip: Portrait slides (4:5) dominate mobile screens and give you more breathing room for text and design elements compared to landscape slides, which tend to look small inside the document viewer.

3. Link Preview Thumbnails

When you paste a URL into a LinkedIn post, the platform automatically generates a link preview card pulled from the destination page’s Open Graph (OG) tags.

• Recommended Size: 1200 x 627 pixels (1.91:1 ratio)
• Best Practice: Ensure the featured image on your blog post or landing page matches these exact dimensions so it renders as a crisp, large preview card rather than a tiny square thumbnail.

4. Profile and Company Page Essentials

Beyond regular feed posts, your foundational profile assets must adhere to strict sizing guidelines to avoid pixelation:

• Personal Profile Picture: 400 x 400 pixels (1:1 ratio, displayed in a circle—keep key elements centered).
• Personal Background Banner: 1584 x 396 pixels (4:1 ratio). Note: Mobile devices crop the sides of personal banners, so keep important text and logos in the center 1200 pixels.
• Company Page Logo: 300 x 300 pixels (1:1 ratio).
• Company Page Cover Photo: 1128 x 191 pixels (roughly 6:1 ratio).

Quick Technical Checklist for Success

• File Formats: Stick to JPEG or PNG for standard raster images. Avoid formats like WebP or HEIC for direct post uploads, as they may not render correctly.
• File Size: Keep single images under 5 MB to prevent upload errors.
• Don’t Upscale: Always design at or above the target resolution. Stretching a tiny, low-resolution image to fit 1200 pixels wide will result in automatic compression blur by LinkedIn’s system.