This content discusses how TikTok surfaces content based on demographics, engagement, and personalized recommendations. It explains how TikTok analyzes user data, such as age, gender, and location, to populate the For You page. The algorithm considers user engagement, followed profiles, and Discover tab behavior to tailor the content to individual interests. The video’s content is evaluated based on visual AI, video overlay, audio, captions, and hashtags. TikTok also uses metrics like engagement and native content creation to determine the quality of videos. Certain types of content, such as that created by users under 16, QR codes, dangerous or violent behavior, and engagement bait, are not eligible for the For You page. To avoid creating echo chambers, TikTok also incorporates random content and creators into users’ For You pages.