TikTok has started testing a new horizontal full-screen mode. TechCrunch reports that select TikTok users are starting to see a new full-screen button on regular square and rectangular videos. The button, much like a similar one on YouTube, shifts the TikTok video into a horizontal full-screen mode.
TikTok confirmed the limited test to TechCrunch, after several users have been noticing the full-screen button appear in recent weeks. It now brings the social video network even closer to…