LinkedIn doesn’t want you to post links without paying to promote them. Their goal is to keep people on the platform instead of driving them away. If you pay to promote it, you will get the large image back.
Is your KPI about increasing link clicks or something else?
I’m a social media manager and strategist for a finance company and most of my responsibility is around our LinkedIn account. I’ve been spending the past few weeks playing with content types now that they’ve changed the link preview. Talk about whiplash. There were several days a few months ago where they made the images small on a Monday and by the next day they were back to normal.
I now add links to other forms of content more often instead of using the link preview alone. Occasionally I’ll add a comment with the link instead. I am really lengthening my caption copy as well since LinkedIn has introduced a more dynamic search.
For some things, like press releases that I want the actual link area to be the priority we have developed a very simple branded graphic that takes up that whole space with no copy, and then I use the copy area of the link preview to the right to really display a buzz worthy title to entice the click, essentially treating the entire thing as the graphic.
Our link preview content has never performed super well – video wins especially now with the new video feed. I am producing more video than ever for LinkedIn.