The Definitive Guide to LinkedIn Ad Sizes and Specs

Running B2B campaigns on LinkedIn is a powerful way to put your brand in front of decision-makers, but nothing kills campaign momentum faster than an asset that gets rejected for sizing errors or cropped awkwardly in the professional feed.

Because LinkedIn serves a high-intent audience of professionals, your creatives need to look polished down to the pixel. This comprehensive guide breaks down the essential ad sizes, aspect ratios, and file requirements for LinkedIn’s most popular ad formats.

1. Single Image Ads (Sponsored Content)

Single image ads are the backbone of most LinkedIn strategies. They appear directly in the user feed on both desktop and mobile. Choosing the right aspect ratio ensures your message isn’t cut off.