LinkedIn Ad Sizes & Dimensions Cheat Sheet

The Complete Guide to LinkedIn Ad Sizes and Specs

Running ads on LinkedIn is a powerful way to reach decision-makers, professionals, and B2B buyers. However, unlike other social networks where you can hastily repurpose any random image, LinkedIn’s professional environment means pixelation, awkward cropping, or mismatched text limits will stand out immediately—and hurt your campaign performance.

Getting your creative dimensions right the first time saves you hours of frustrating re-exports and rejection loops. Here is a comprehensive guide to LinkedIn ad sizes, formats, and design rules.

1. Single Image Ads (The Feed Staple)

Single image ads appear natively in the LinkedIn feed on both desktop and mobile. They are your go-to format for general announcements, lead magnets, and thought leadership.

• Landscape (Horizontal):
  • Recommended Size: $1200 times 628$ pixels (1.91:1 aspect ratio)
  • Delivery: Desktop and mobile
• Square:
  • Recommended Size: $1200 times 1200$ pixels (1:1 aspect ratio)
  • Delivery: Desktop and mobile (Pro tip: Square is often the safest bet because it takes up more vertical feed space on mobile without getting cut off.)
• Vertical:
  • Recommended Size: $720 times 900$ pixels (4:5 aspect ratio)
  • Delivery: Mobile only
• Technical Limits: Maximum file size of 5 MB. Accepted formats are JPG, PNG, or non-animated GIF.

2. Carousel Ads (Swipeable Storytelling)

Carousel ads feature 2 to 10 swipeable image cards, making them ideal for product features, step-by-step guides, or multi-stat case studies.

• Recommended Image Size: $1080 times 1080$ pixels (1:1 aspect ratio)
• Number of Cards: 2 to 10 cards
• Technical Limits: Maximum 10 MB per card. Formats accepted: JPG, PNG, or non-animated GIF.
• Note: Because cards scale down in the feed, keep text inside your graphic large and punchy so it remains legible on smaller screens.

3. Video Ads (Motion in the Feed)

Video is unmatched for building brand awareness and deep product walkthroughs. LinkedIn supports multiple aspect ratios depending on how your video was filmed.

• Landscape (16:9): $1920 times 1080$ pixels
• Square (1:1): Up to $1920 times 1920$ pixels
• Vertical (4:5): $720 times 900$ pixels (Recommended for vertical feed)
• Vertical (9:16): $720 times 1280$ pixels up to $1080 times 1920$ pixels
• Technical Limits:
  • File size: 75 KB to 500 MB
  • Duration: 3 seconds to 30 minutes (though shorter, punchier videos perform best)
  • Format: MP4

4. Text and Dynamic Ads (Right-Rail Specials)

If your campaign relies on desktop sidebar real estate or hyper-personalized messaging, you’ll use these smaller units.

• Text Ads:
  • Logo Size: $100 times 100$ pixels (JPG or PNG, max 2 MB)
• Spotlight Ads:
  • Logo Size: $100 times 100$ pixels
  • Background Image (Optional): $300 times 250$ pixels
• Message / Conversation Ad Banners:
  • Desktop Banner: $300 times 250$ pixels (JPG or PNG, max 2 MB)

Quick Summary Checklist for Designers

| Ad Format | Best Resolution | Max File Size | File Types |
| :— | :— | :— | :— |
| Single Image (Square) | $1200 times 1200$ px | 5 MB | JPG, PNG, GIF |
| Single Image (Landscape) | $1200 times 628$ px | 5 MB | JPG, PNG, GIF |
| Carousel Card | $1080 times 1080$ px | 10 MB per card | JPG, PNG, GIF |
| Video Ad | Up to $1920 times 1080$ px (16:9) | 500 MB | MP4 |

Before launching your campaign, always preview your ads using LinkedIn Campaign Manager to ensure your text overlays aren’t clipped and your calls-to-action remain crystal clear across desktop and mobile devices.