How udacity.com Looks on Slack
This page shows how udacity.com appears when shared on Slack. The current preview headline reads "Learn the Latest Tech Skills; Advance Your Career | Udacity". It pairs with the description "Learn online and advance your career with courses in programming, data science, artificial intelligence, digital mark..." and a social image. Overall, udacity.com's setup scores 73/100 against Slack best practices.
Slack preview
Slack
www.udacity.com
Learn the Latest Tech Skills; Advance Your Career | UdacityLearn online and advance your career with courses in programming, data science, artificial intelligence, digital marketing, and more. Gain in-demand technical skills. Join today!

Analysis
udacity.com's social setup currently has 2 warnings that affect how it renders on Slack. The most impactful fixes are listed below - they range from missing required tags to image dimensions that will be cropped or rejected by specific platforms.
In particular: description is 178 characters - truncated on most platforms; missing twitter:card tag. Each of these has a one-line fix in the recommendations panel above.
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