Paste a YouTube playlist URL or ID, hit Load, and play. Visualizer is a stick‑figure dancer that walks and hops to the beat. Mic mode gives true audio‑reactivity. (Browsers block tapping YouTube audio directly, so EQ can’t alter YT sound.)
Pro tip: you can navigate with ← → for Previous/Next while focused on the page.
To react to internal audio: click 🖥️ Tab Audio, choose This Tab, and enable Share tab audio. Use the Sensitivity slider to boost the analyser input. (Exact options depend on your browser/OS.)
Due to browser security, equalizers can’t process YouTube iframe audio. Sliders affect the visualizer, and fully apply when using Mic Mode or a local audio file.