Paste any URL below into OBS → Sources → Browser. Soft pink flip-clock style, no signup, no watermark on the overlay.
?transparent=1 for a transparent background.
Duration examples: ?minutes=5, ?seconds=90, ?duration=1h30m.
Clock timezone: ?tz=Asia/Ho_Chi_Minh.
Pomodoro: ?work=25&break=5 (minutes).
In OBS, uncheck “Shutdown source when not visible” so the timer keeps running.