The Ultimate Guide to LinkedIn Ad Sizes & Specs

When it comes to B2B marketing, LinkedIn is the undisputed heavyweight champion. With over a billion professionals networking, sharing industry insights, and searching for solutions, it offers a laser-focused audience you won’t find anywhere else.

However, running a successful LinkedIn ad campaign requires more than just a great hook and a compelling offer. If your creative assets are poorly cropped, pixelated, or squished into the wrong dimensions, even the best copywriting will fall flat. Professional audiences expect a polished, high-quality aesthetic.

Whether you’re setting up a brand awareness campaign with sleek single images or driving lead generation through interactive carousels and videos, this comprehensive guide breaks down every essential LinkedIn ad size and specification you need to know.

1. Single Image Ads

Single image ads appear directly in the LinkedIn feed, blending native posts with promotional content. They are versatile, easy to produce, and perfect for driving website traffic or lead generation.

LinkedIn supports three primary aspect ratios for single image ads:

• Landscape (1.91:1)
  • Recommended Resolution: 1200 x 627 pixels
  • File Types: JPG or PNG
  • Max File Size: 5 MB
  • Best for: Standard link shares and articles that mimic organic feed posts.
• Square (1:1)
  • Recommended Resolution: 1200 x 1200 pixels
  • File Types: JPG or PNG
  • Max File Size: 5 MB
  • Best for: Maximizing screen real estate on both desktop and mobile feeds.
• Vertical (9:16)
  • Recommended Resolution: 600 x 1069 pixels (or higher