The Ultimate Guide to LinkedIn Post Image Sizes: Dimensions, Aspect Ratios, and Best Practices

In the fast-moving world of professional networking, first impressions happen in fractions of a second. When users scroll through their LinkedIn feeds, text captures interest, but high-quality visuals stop the thumb mid-scroll.

However, nothing kills professional credibility faster than a blurry, stretched, or awkwardly cropped image. Because LinkedIn automatically handles and adjusts media differently across desktop and mobile viewports, mastering the right dimensions is essential.

This comprehensive guide breaks down the exact image sizes, aspect ratios, and optimization strategies you need to make your LinkedIn content shine.

1. Standard Feed Post Image Sizes

When posting a standard image directly to your feed, your choice of format dictates how much screen real estate you command.

| Format | Dimensions (Pixels) | Aspect Ratio | Best Used For |
| :— | :— | :— | :— |
| Square | $1080 times 1080$ | $1:1$ | Quotes, product announcements, and cross-platform sharing. |
| Portrait | $1080 times 1350$ | $4:5$ | Infographics, tutorials, and text-heavy graphics. |
| Landscape | $1200 times 627$ | $1.91:1$ | Professional photography, charts, and link previews. |

• The Mobile Power Play (Portrait): Because over half of LinkedIn’s traffic is mobile, $1080 times 1080$ and $1080 times 1350$ are your best options for driving engagement. The portrait $4:5$ ratio pushes competing posts out of view on a smartphone screen, maximizing visibility.
• The Safe Default (Square): If you plan to cross-post your graphic to X (Twitter), Instagram, or Facebook, the $1:1$ square format displays consistently everywhere without sudden layout shifts.

2. Link Previews and Articles

When you share an external URL (such as a blog post or landing page), LinkedIn automatically generates a link preview thumbnail.

• Recommended Size: $1200 times 627$ pixels ($1.91:1$ aspect ratio)
• Pro Tip: If your link preview looks pixelated or cropped, check your website’s Open Graph (OG) meta tags. Ensuring your website has a designated $1200 times 627$ image pre-loaded will prevent LinkedIn from grabbing an incorrect or low-resolution image from your page.

3. Carousel and Document Posts

Document posts (uploaded as PDFs that readers can swipe through) are among the highest-performing content types on LinkedIn.

• Dimensions: $1080 times 1080$ pixels (Square) or $1080 times 1350$ pixels (Portrait)
• File Format: PDF only
• Best Practices: Keep your slide deck clean and readable. Use high-contrast fonts, ensure your body text is large enough to read on small screens, and leave a safe margin around the edges so text isn’t obscured by LinkedIn’s UI overlays.

4. Profile and Company Page Assets

Your personal profile and company page act as your digital storefront. Keep them looking polished with these dimensions:

• Personal Profile Photo: $400 times 400$ pixels minimum ($1:1$). Remember that LinkedIn displays profile photos inside a circle, so center your face and keep crucial details away from the corners.
• Personal Background Banner: $1584 times 396$ pixels ($4:1$ ratio). Note that your profile picture overlaps the bottom-left area on desktop (and bottom-center on mobile), so keep important branding and text out of that zone.
• Company Page Cover Image: $1128 times 191$ pixels. This is much wider and shorter than the personal banner, so avoid simply reusing your personal asset.

5. Technical Requirements and File Limits

To avoid getting errors upon upload or suffering from aggressive platform compression, keep these guidelines in mind:

• File Size Limit: Keep single images under 5 MB (up to 10 MB for multi-image posts).
• Supported Formats: JPG, PNG, and non-animated GIF.
• Choose the Right Format: Use PNG for graphics, UI mockups, and text-heavy images to keep text crisp. Use JPG for photographs to optimize loading times without visible quality loss.

The Golden Rule: Always design to the exact aspect ratio first, and make sure your critical design elements (text, logos, faces) sit safely within the center of the frame to survive cross-device cropping.