The Complete Guide to LinkedIn Post Dimensions and Image Sizes

You’ve spent hours drafting a brilliant LinkedIn post. The hook is punchy, the insights are razor-sharp, and the call to action is primed for engagement. But when you hit publish, your custom graphic looks like a blurry, awkwardly cropped casualty of the algorithm.

Visuals matter immensely on professional social media. Because over 60% of LinkedIn users browse on mobile devices, a poorly formatted asset can tank your reach before anyone even reads a word of your text.

To help your content stand out, look sharp, and command attention, here is the ultimate, up-to-date guide to LinkedIn post dimensions.

1. Feed Post Image Dimensions

When posting standard photos, infographics, or promotional graphics directly to your feed, you have three primary aspect ratio options. Picking the right one depends entirely on your content strategy:

• Square (1:1 Ratio) — 1080 x 1080 pixels
  • Best for: Infographics, quote cards, and general brand posts.
  • Why use it: It’s the safest, most reliable format. It renders cleanly across both desktop monitors and mobile screens without unexpected cropping.
• Portrait (4:5 Ratio) — 1080 x 1350 pixels
  • Best for: High-performing thought-leadership visuals and deep-dive graphics.
  • Why use it: This is the gold standard for mobile engagement. Portrait images take up the maximum allowable vertical real estate on a phone screen, forcing users to pause their scroll.
• Landscape (1.91:1 Ratio) — 1200 x 627 pixels
  • Best for: Link previews, blog shares, and broad company announcements.
  • Why use it: While it lacks the visual punch of a portrait image on mobile, it is structurally optimized to display external web links cleanly without awkward side-clipping.

2. Document & Carousel Dimensions (PDFs)

Document carousels are one of the most effective organic reach tools on LinkedIn, allowing users to swipe through multiple slides like a mini slide-deck.

• Recommended Size: 1080 x 1080 pixels (Square) or 1080 x 1350 pixels (Portrait)
• Max File Size: 10MB per document (up to 100MB overall)
• Formats: PDF, PPTX, or DOCX (PDF is strongly recommended to preserve exact fonts and layout formatting).

Pro Tip: Design your carousels in a portrait layout (1080 x 1350 px) using design platforms like Canva. The extra vertical length commands attention and makes text easier to read on smaller mobile screens.

3. Video Post Dimensions

Video content continues to capture high attention spans on LinkedIn, whether you’re uploading quick tips or long-form insights.

• Square Video: 1080 x 1080 pixels (1:1 ratio)
• Horizontal / Widescreen Video: 1920 x 1080 pixels (16:9 ratio)
• Vertical Video: 1080 x 1350 pixels (4:5 ratio) or full vertical 1080 x 1920 pixels
• Specs: MP4 format is preferred, with lengths ranging from 3 seconds up to 10–15 minutes depending on platform updates, capped at a maximum file size of 200MB to 5GB.

4. Profile and Page Foundation Dimensions

Your posts live or die by the credibility of the profile publishing them. Make sure your overall page layout matches these exact dimensions so nothing looks pixelated:

| Asset Type | Recommended Dimensions | Aspect Ratio | Format |
| :— | :— | :— | :— |
| Personal Profile Photo | 400 x 400 pixels | 1:1 (Circular crop) | JPG, PNG |
| Personal Cover Banner | 1584 x 396 pixels | 4:1 | JPG, PNG, GIF |
| Company Page Logo | 400 x 400 pixels (Minimum 268 x 268) | 1:1 | JPG, PNG |
| Company Cover Banner | 1128 x 191 pixels | ~5.9:1 | JPG, PNG |

Crucial Banner Warning: On personal profiles, the circular profile picture overlaps the bottom-left corner of your banner on desktop and mobile. Keep text, logos, and critical design elements shifted toward the center-right to avoid getting blocked.

Quick Checklist for Flawless LinkedIn Visuals

1. Check the file size caps: Most standard single image uploads max out at 5MB, so compress your files if they are throwing upload errors.
2. Choose the right file type: Use PNG for graphics containing sharp text, logos, or solid lines to avoid pixelation artifacting; use JPEG or WebP for real-life photographs.
3. Prioritize Mobile: Always preview your graphics on your phone before scheduling them out. If text is illegible at a glance on a small screen, scale it up or simplify your layout.

By matching your assets to these optimized dimensions, you’ll ensure your content looks professional, clean, and primed to capture maximum screen space in the feed.