How rubyonrails.org Looks on Slack
This page shows how rubyonrails.org appears when shared on Slack. The current preview headline reads "Ruby on Rails: Accelerate your agents with convention over configuration". It pairs with the description "A full-stack web application framework written in Ruby, following the Model View Controller pattern, that includes ev..." and a social image. Overall, rubyonrails.org's setup scores 73/100 against Slack best practices.
Slack preview
Slack
Ruby on Rails: Compress the complexity of modern web apps
Ruby on Rails: Accelerate your agents with convention over configurationA full-stack web application framework written in Ruby, following the Model View Controller pattern, that includes everything you need to build modern database-backed web apps.

Analysis
rubyonrails.org'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: title is 72 characters - truncated on most platforms; description is 176 characters - truncated on most platforms. Each of these has a one-line fix in the recommendations panel above.
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