How instagram.com Looks on Slack
This page shows how instagram.com appears when shared on Slack. The current preview headline reads "Instagram". It pairs with the description "Create an account or log in to Instagram - Share what you're into with the people who get you." and a social image. Overall, instagram.com's setup scores 67/100 against Slack best practices.
Slack preview
Slack
Create an account or log in to Instagram - Share what you're into with the people who get you.

Analysis
instagram.com's social setup currently has 3 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: missing og:type tag; missing twitter:card tag; canonical url and og:url do not match. Each of these has a one-line fix in the recommendations panel above.
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