Reddit is a:

Reddit is a mobile-first platform, meaning its design and development prioritize the mobile user experience. This approach acknowledges that a significant portion of its user base accesses the platform via smartphones and tablets. Optimizing for mobile ensures features, content, and ads are easily viewable and interactive on smaller screens, leading to better engagement. While Reddit is accessible on desktops, and some users prefer that experience, the platform's strategic focus is on mobile to capture and retain the largest segment of its audience. Desktop-first, tablet-first, and TV-first are incorrect because they do not reflect Reddit's primary development and user access strategy.