LinkedIn Pulls Wrong Image
It's not Us, It's LinkedIn
“The choice and quality of the image “ grabbed” when you use the “share” feature is totally beyond your control.”
Read here for more: https://community.linkedin.com/questions/3299/image-displayed-when-sharing-a-website.html
New Method Updated 4-July-2018
Linkedin has launched the Post Inspector.
Follow the steps below to clear Linkedin Preview cache:
Step 1: Visit https://www.linkedin.com/post-inspector/inspect/
Step 2: Enter your URL and click on Inspect, You will see the updated preview image
Step 3: Now try sharing your URL on Linkedin