Slack Green

Online mouse jiggler and idle test

Keep your computer awake from a browser tab: press Start and the screen stays on while this tab is open and visible. It also reads the idle time the Slack desktop app, Teams and Zoom read, and shows the minute each would set you away, with your jiggler or without it. Nothing to install.

This tab cannot move your pointer or press keys, so on its own it cannot keep Slack or Teams active. It reads the same idle time the Slack desktop app, Teams and Zoom read. To test a jiggler, start, then take your hands off for 6 minutes: if Your computer stays green, the jiggler keeps them active.

  • Your computerNot measured yet
    Press Start and allow idle detection.
  • Slack desktop app-
    Away after 10 min, any input.
  • Microsoft Teams-
    Away after about 5 min, any input.
  • Zoom-
    Away after 15 min by default, any input.
Example: screen kept awake, nobody touches the computer for 11 minutes0m1m2m3m4m5m6m7m8m9m10m11m12m13mComputer inputIdle DetectionScreen kept awakeWake LockInput on this pagepointer, keysSlack desktop app10 min, any inputMicrosoft Teamsabout 5 min, any inputZoom15 min by default, any inputno input 11:20Away at 10:00Away at 5:00activeidle / awayTeams awaylockedtab hidden

How to test a mouse jiggler

  1. Open this page in Chrome or Edge, leave "Keep the screen awake" on, and press Start. Allow idle detection when the browser asks.
  2. Turn on your jiggler, whether it is a USB device, an app, or another jiggler website. Then take your hands off the keyboard and mouse for at least 6 minutes.
  3. Watch the Your computer row. If it turns grey, your computer saw no input: Teams goes Away 5 minutes after your last touch and the Slack desktop app 10 minutes after. If it stays green, the jiggler reaches the computer and keeps all three active.
  4. Press Stop, then download the timeline as a PNG or copy the result. Safari and Firefox have no idle detection, so there the page only keeps the screen awake.

Frequently asked questions

Does an online mouse jiggler keep Slack or Teams active?

No. A web page cannot move your real pointer or press keys, and the screen wake lock these sites use is a power setting, not input. On a Mac it shows in pmset as a "Blink Wake Lock" display assertion, and the idle counter keeps running. Teams goes Away about 5 minutes after your last real input, and the Slack desktop app 10 minutes after it. Start the test here with the screen kept awake and take your hands off: the computer input row turns grey after a minute.

How does the page know when my computer is idle?

It uses the Idle Detection API in Chrome and Edge, which asks for your permission first. The browser then tells the page when the whole computer has had no keyboard or mouse input for a minute, and when the screen locks. It gives no finer detail, and the page sends nothing anywhere. Teams on the web uses the same permission for its "Keep my current status when I'm active outside of Teams" option.

Will a USB mouse jiggler keep Teams and Slack green?

Yes, if it moves the pointer more often than every 5 minutes. Teams, Zoom and the Slack desktop app all count input anywhere on the computer, and a USB jiggler is real input. A jiggler app is less sure on a Mac: in our October 2026 tests a 1-pixel move sent by an app did not reset the Mac idle counter. Run the test with your jiggler on: if Your computer stays green with your hands off, it works for all three. Slack in a browser tab can behave differently.

Does this page see the same idle time as Slack?

Yes, for the Slack desktop app. Chrome and Edge give this page the idle time through the Idle Detection API, which calls Chromium ui::CalculateIdleTime(). The Slack desktop app is built on Electron, and its powerMonitor.getSystemIdleTime() calls the same function. On a Mac that function reads CGEventSourceSecondsSinceLastEventType for the whole login session. So when this page says the computer had no input for 10 minutes, the Slack desktop app sees the same 10 minutes. We read this in the Chromium and Electron source on 26 Oct 2026.

Will this website keep my computer awake?

Yes, while the tab is open and on screen. Start takes a screen wake lock (Chrome, Edge, Safari 16.4 and later, Firefox 126 and later) and the tab title starts with "Awake:". On a Mac, pmset listed it as a "Blink Wake Lock" display assertion in our test, so the display stays on, and macOS does not idle-sleep while the display is on (pmset lists "Prevent sleep while display is on" from powerd). Browsers drop the lock when the page is hidden, so switching tabs or minimizing the window lets the computer sleep again. The page asks for the lock again when you come back and marks the gap in yellow on the timeline, so keep it in its own uncovered window. It creates no input, so Teams and Slack can still show you away.

Related reading

Slack Green does one thing: it keeps your Slack presence dot green while you are actually working, so a quiet keyboard does not mark you away. Try it free.