The Ultimate Guide to LinkedIn Post Image Sizes: Stop Guessing and Start Growing

You’ve spent hours crafting the perfect LinkedIn post. The hook is sharp, the insights are valuable, and the call-to-action is crystal clear. You attach a striking graphic, hit publish, and… silence.

Worse yet, you check your phone and realize your brilliant graphic has been awkwardly cropped, your headline text is sliced in half, or it looks blurry and pixelated.

Visual content on LinkedIn is non-negotiable if you want to stand out in a crowded feed. But because LinkedIn handles images differently depending on whether your audience is viewing on a desktop monitor or a mobile phone, getting the dimensions right is half the battle.

This comprehensive guide breaks down the exact LinkedIn post image sizes you need to know to ensure your content always looks professional, crisp, and high-converting.

The Three Golden Formats for LinkedIn Feed Images

When uploading a single image to your LinkedIn feed, you have three primary aspect ratio options. Choosing the right one depends entirely on what kind of content you are sharing.

| Format | Recommended Dimensions | Aspect Ratio | Best Used For |
| :— | :— | :— | :— |
| Portrait (Vertical) | 1080 x 1350 pixels | 4:5 | Infographics, text-heavy graphics, data charts, and mobile optimization |
| Square | 1080 x 1080 pixels | 1:1 | Multi-purpose branding, standard quote cards, and cross-platform sharing |
| Landscape | 1200 x 627 pixels | 1.91:1 | Link previews, website shares, and wide cinematic photos |

1. Portrait / Vertical (1080 x 1350 px) — The Engagement Winner

If your main goal is capturing attention, portrait is your best friend. Because over 60% of LinkedIn browsing happens on mobile devices, vertical images take up the maximum amount of vertical real estate on a phone screen.

• Why use it: It forces the reader to slow down their scroll. It’s the ultimate choice for infographics, step-by-step guides, or dense text cards.
• The Catch: Do not go taller than a 4:5 aspect ratio (1080×1350 px). If you upload a hyper-tall image (like a 9:16 Instagram Story graphic), LinkedIn will forcefully crop the top and bottom in the feed.

2. Square (1080 x 1080 px) — The Safe All-Rounder

If you don’t want to worry about how an image looks across different devices, square is the safest bet.

• Why use it: It renders cleanly and predictably on both desktop monitors and mobile apps. It’s a great universal format if you plan to cross-post the exact same graphic to Instagram, Facebook, or X.
• The Catch: It doesn’t command as much feed space as a portrait image, but it still performs reliably well for clean product shots, portraits, and minimalist graphics.

3. Landscape (1200 x 627 px) — The Link Preview Standard

This wide, rectangular format is LinkedIn’s legacy size.

• Why use it: It is the ideal specification when you are sharing an external blog post, article, or website link where LinkedIn automatically pulls a thumbnail preview.
• The Catch: On mobile screens, landscape images appear short and leave a lot of empty white space above and below them, resulting in lower overall engagement. Use this primarily for link shares rather than standalone creative graphics.

Dimensions Beyond the Feed: Profiles & Banners

Your personal profile or company page is your digital storefront. Blurry or cut-off banner images immediately project a lack of attention to detail. Keep these specs locked in:

• Personal Profile Picture: 400 x 400 pixels (1:1 ratio). Keep your face dead-center, as LinkedIn displays profile photos inside a circular crop. Max file size: 8 MB.
• Personal Background / Cover Banner: 1584 x 396 pixels (4:1 ratio). Note that on mobile devices, the left side of your banner can be partially obscured by your profile picture, so keep critical text and logos shifted toward the right side.
• Company Page Logo: 400 x 400 pixels (1:1 ratio).
• Company Page Cover Banner: 1128 x 191 pixels (~6:1 ratio).

Special Formats: Carousels and Documents

Document posts (often called LinkedIn carousels, where users swipe through a PDF or slide deck) are currently among the highest-performing content formats on the platform.

• Carousel Slide Dimensions: 1080 x 1080 pixels (Square) or 1080 x 1350 pixels (Portrait).
• File Type: Always export your slides as a PDF before uploading.
• Best Practice: Stick to portrait (1080 x 1350 px) for your carousels to maximize mobile screen dominance, and ensure your fonts are large enough to be read comfortably on a phone.

3 Rules for Flawless LinkedIn Image Exports

1. Mind Your File Formats: Stick to PNG if your graphic contains sharp text, sharp lines, or logos to prevent compression artifacts. Use JPEG or WebP for photographic images to keep file sizes low.
2. Respect the Margins: Keep crucial text, logos, and focal points away from the absolute outer borders of your canvas. Different app updates and viewports can occasionally clip edges.
3. Keep File Sizes Reasonable: LinkedIn handles files up to 5 MB for standard post images, but keeping your exports clean and optimized ensures rapid loading times for your audience.

By tailoring your image dimensions to how users actually experience LinkedIn—primarily through a smartphone screen—you instantly elevate the perceived quality of your content, keeping eyes on your posts longer and driving real professional growth.