TikTok's algorithm is the most democratic of any platform. Anyone can go viral. Here's how it works.
The Testing Phase
Every video gets shown to ~200-500 people initially. If those viewers watch to the end, like, comment, and share at high rates, TikTok shows it to more people. Then more. Then more.
Signals That Matter (In Order)
1. Completion rate (most important). 2. Rewatch rate. 3. Shares. 4. Comments. 5. Likes. 6. Follows from video.
Practical Implications
Hook in first 1 second. Keep videos short (15-30s for best completion). Create loops (end connects to beginning). Ask questions to drive comments. Use our TikTok caption generator and hook generator.