Tech Tools / Show Timer
Show Timer
Run-of-show countdown, count-up, or clock — plus a confidence-monitor message. Open a clean output window, drag it to another display, and go fullscreen.
Use at your own risk. This is a planning / confidence aid, not a safety-critical show-stop system. Always keep a hardware timer or stage-manager backup. On phones (especially iOS), popups may be limited — open the output URL in a second tab. Timing uses wall-clock timestamps so background tabs stay accurate.
Live output preview
Shortcuts: Space = start/pause · R = reset · Output: F = fullscreen. iOS: use “Open output tab” then Add to Home Screen / fullscreen from Safari if needed.
Transport
Run-of-show cues (optional)
| Cue | Duration |
|---|
Sources
- Timing: wall-clock timestamps (
Date.now) — remaining = endAt − now — avoidssetIntervaldrift when tabs are backgrounded. - Sync:
BroadcastChannelwithlocalStoragefallback for cross-window state. - Display: Fullscreen API; optional Window Management API (
getScreenDetails) when available (Chromium).
What this show timer does
It drives a clean fullscreen countdown, count-up, clock, or message on a second window — ideal for stage managers and downstage confidence monitors.
Sync
Control and output share state via BroadcastChannel with localStorage fallback so reloads keep the same cue.
Tips
- Keep a hardware backup timer for critical cues.
- Preload fonts on the output display before doors.
FAQ
How do I put the timer on another monitor?
Click Open output window, drag it to the confidence display, then press F or Go Fullscreen.
Will the timer drift if the control tab is in the background?
No. Timing uses wall-clock timestamps (endAt − now), not accumulating intervals.
Does it work on iPhone?
The control page works on phones. iOS may block popups — open the output URL in a second tab.
Need show calling?
Kynetic runs corporate and medical shows — timers, confidence, and stage management included.