LinkedIn post image size: best dimensions for 2026

The image attached to your LinkedIn post is often the first thing that stops a scroll, and getting its size wrong quietly costs you reach. Upload the wrong dimensions and LinkedIn crops your visual, shrinks it in the feed, or surrounds it with empty bars, all of which make a post look less professional and get fewer eyes. Get the LinkedIn post image size right and your visual fills the frame and pulls attention the way it should.

The catch is that there is no single correct size. LinkedIn supports square, portrait, and landscape images for feed posts, and each takes up a different amount of screen space, especially on mobile where most people scroll. The format you choose changes how much of the feed your post occupies.

This guide gives you the exact recommended dimensions for every LinkedIn post image format in 2026, which one to pick for the most reach, the file specs that matter, and the common mistakes that shrink your images. Once the size is sorted, the visual works for you in every feed it lands in.

The short answer

The best LinkedIn post image size in 2026 is 1080 x 1350 pixels (a 4:5 portrait), because it takes up the most vertical space in the mobile feed. If you prefer a square, use 1080 x 1080 pixels, and for a landscape or link-style image, use 1200 x 627 pixels.

All formats accept JPG, PNG, or WebP, with a maximum file size of 5 MB. Upload at least 1080 pixels on the wide side so your image stays sharp on high-resolution screens. To confirm your file is the right size before you post, run it through a free LinkedIn image size checker.

LinkedIn post image size by format

Here is every feed image format with its full specs and why the dimensions are set where they are.

Portrait: 1080 x 1350 px (4:5)

Portrait is the highest-engagement format because it claims the most vertical real estate in the mobile feed, where the majority of LinkedIn scrolling happens. A 4:5 image pushes competing posts further down the screen and gives your visual more room to be seen. If your goal is reach and your image works vertically, this is the size to use.

• Recommended size: 1080 x 1350 px
• Aspect ratio: 4:5
• Best for: single-image posts where engagement matters most

Square: 1080 x 1080 px (1:1)

Square is the safe, balanced default. It displays consistently across desktop and mobile without heavy cropping, and it suits most content, from quote cards to product shots. It takes up less vertical space than portrait, so it is slightly less dominant in the feed, but it is the most reliable all-rounder.

• Recommended size: 1080 x 1080 px
• Aspect ratio: 1:1
• Best for: a clean default that renders well everywhere

Landscape: 1200 x 627 px (1.91:1)

Landscape is the widescreen format, and it is also the size LinkedIn uses for link preview images when you share an article. It occupies the least vertical space of the three, so it is the weakest for pure feed dominance, but it is the right choice for wide visuals, banners inside a post, or when you are sharing a link and want the preview to look correct.

• Recommended size: 1200 x 627 px
• Aspect ratio: 1.91:1
• Best for: link shares and wide, horizontal visuals

File specs that matter

Dimensions are only half the job. These file specs decide whether your image stays sharp and uploads cleanly.

• File size: 5 MB maximum. Plenty of headroom. A well-compressed image at 1080 to 1200 pixels lands well under this with no visible loss.
• Formats: JPG, PNG, or WebP. Use PNG for graphics, text, and screenshots with crisp edges, JPG or WebP for photographs.
• Resolution: at least 1080 px wide. Upload smaller than that and LinkedIn upscales the image, which introduces blur on retina screens. There is no downside to uploading at the recommended size.
• Minimum: 552 x 276 px. Below this LinkedIn is forced to enlarge the image, degrading quality. Treat it as a hard floor, not a target.

How to choose the right LinkedIn post image size

The format is a strategic choice, not just a technical one. Use these rules to pick.

• Optimizing for reach and engagement: use portrait, 1080 x 1350 px. It wins the most mobile feed space, and mobile is where most impressions happen.
• Want a reliable default: use square, 1080 x 1080 px. It renders cleanly everywhere and never looks awkward.
• Sharing a link or a wide visual: use landscape, 1200 x 627 px, so the preview and the composition look right.
• Posting a multi-image carousel or document: those follow different specs. For every format on the platform in one place, see the full LinkedIn image sizes guide.

Whatever you choose, keep the important content away from the edges, since a sliver can be cropped in different feed views. To see exactly how your post and its image will look before you publish, use a free LinkedIn post preview tool.

Common mistakes to avoid

Most weak LinkedIn images fail for a handful of avoidable reasons.

One more that is easy to miss: mismatched visuals across your profile. If your post images, banner, and headshot clash in style and color, your presence looks inconsistent. Keep a coherent visual identity across all of them.

Post image vs the other LinkedIn image sizes

Your post image is one piece of a larger visual system, and each surface has its own specs. Do not reuse one size for everything.

For the two images people see first on your profile, read our LinkedIn banner size guide and the LinkedIn profile picture size guide. Both have their own dimensions and safe zones that differ from post images.

What this means for you

• Default to portrait, 1080 x 1350 px, for single-image posts when you want maximum reach, since it dominates the mobile feed. Use 1080 x 1080 square when you want a safe, balanced look.
• Upload at full resolution. At least 1080 pixels wide keeps your image sharp on every screen and avoids LinkedIn's upscaling blur.
• Match a supported aspect ratio, 4:5, 1:1, or 1.91:1, so LinkedIn does not crop your visual or wrap it in empty bars.
• Preview before you publish so nothing important gets clipped, and confirm the image is sized correctly first.
• Then focus on the content. A correctly sized image earns the pause; your writing keeps the reader. Draft the post with a LinkedIn post generator and keep your visual identity consistent across your profile.

Your post image is a fast, high-impact fix. Set the size right, pick the format that fits your goal, and it works for you in every feed it appears in. When you are ready to turn attention into followers, ViralBrain helps you generate and schedule the posts that keep them coming back. See ViralBrain pricing to get started.

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Sources: LinkedIn Post Image Size Guide 2026 (Typefully), LinkedIn Post Specs 2026 (ContentIn), Social Media Image Sizes 2026 (Hootsuite).

FAQ

What is the best image size for a LinkedIn post?
The best LinkedIn post image size in 2026 is 1080 x 1350 pixels, a 4:5 portrait, because it takes up the most vertical space in the mobile feed and gets the most engagement. For a square, use 1080 x 1080 pixels, and for a landscape or link image, use 1200 x 627 pixels. Upload at least 1080 pixels wide in JPG, PNG, or WebP under 5 MB.

What aspect ratio should a LinkedIn post image be?
LinkedIn supports three feed image aspect ratios: 4:5 portrait (1080 x 1350 px), 1:1 square (1080 x 1080 px), and 1.91:1 landscape (1200 x 627 px). Portrait claims the most mobile screen space, square is the safest all-rounder, and landscape suits link previews and wide visuals. Match one of these ratios so LinkedIn does not crop your image.

Why is my LinkedIn post image blurry?
The most common cause is uploading an image smaller than 1080 pixels wide, which forces LinkedIn to upscale it and add blur. Re-export at 1080 pixels or larger on the wide side. Heavy compression or a low-resolution source file can also cause softness, so start from a high-quality original and keep the file under 5 MB.

What is the maximum file size for a LinkedIn image?
LinkedIn allows post images up to 5 MB, and accepts JPG, PNG, and WebP formats. That is generous: a well-compressed image at 1080 to 1200 pixels usually lands well under 1 MB with no visible quality loss, so file size is rarely the limiting factor.

Is portrait or square better for LinkedIn posts?
Portrait (1080 x 1350 px) generally performs better because it occupies more vertical space in the mobile feed, where most LinkedIn scrolling happens, so it captures more attention. Square (1080 x 1080 px) is a safe, balanced default that renders consistently across devices. Use portrait when engagement is the priority and square when you want a clean, reliable look.

What size is a LinkedIn link preview image?
When you share a link, LinkedIn pulls a preview image at 1200 x 627 pixels, a 1.91:1 landscape ratio. If you control the source page, set its Open Graph image to that size so the preview renders sharply. For a manually uploaded landscape image inside a post, the same 1200 x 627 dimensions apply.

How do I check if my LinkedIn image is the right size?
Run your file through a free LinkedIn image size checker to confirm the dimensions and aspect ratio before you upload, then use a LinkedIn post preview to see how it will actually render in the feed. Both are free and require no account.