Twitter Cards are a way to present different content on a visual appealing manner and lately Twitter is improving and expanding these cards to enrich the user experience.
Twitter Cards make it possible for you to attach media experiences to Tweets that link to your content. Simply add a few lines of HTML or use the WordPress plugin, and users who Tweet links to your content will have a “card” added to the Tweet that’s visible to all of their followers.
Cards drive engagement from your Tweets
There are several Card types that can be attached to Tweets, each of which has a beautiful consumption experience built for Twitter’s web and mobile clients:
Summary Card: Default Card, including a title, description, thumbnail, and Twitter account attribution.
Summary Card with Large Image: Similar to a Summary Card, but offers the ability to prominently feature an image.
Photo Card: A Tweet sized photo Card.
Gallery Card: A Tweet Card geared toward highlighting a collection of photos.
App Card: A Tweet Card for providing a profile of an application.
Player Card: A Tweet sized video/audio/media player Card.
Product Card: A Tweet Card to better represent product content.