Timer

On-stream countdown, stopwatch, clock or focus timer for breaks and challenges — driven from chat, survives refreshes.

A persistent countdown timer browser source. The deadline lives on the server, so the timer survives OBS restarts and overlay reconnects.

What it does

Speedrun splits, challenges, intermissions with a fixed return time
The Starting Soon countdown, a pomodoro or a stopwatch
Anything you want on stream with a visible countdown and chat control

Setup

Create a hosted source and drop the URL into OBS as a Browser Source.
Enable chat commands and set your channel — your mods can drive it.
Use !timer 5m from chat to start, !timerAdd 30s to extend, !timerPause to pause.