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 shows what your computer reports as idle, and the minute Slack, Teams and Zoom would set you away, with your jiggler or without it. Nothing to install.
This tab cannot move your pointer or press keys, so it cannot keep Slack or Teams active. It measures what your computer reports as idle. To test a jiggler, start, then take your hands off for 6 minutes.
- Your computerNot measured yetPress Start and allow idle detection.
- Slack-Away after 10 min, input in Slack only.
- Microsoft Teams-Away after about 5 min, any input.
- Zoom-Away after 15 min by default, any input.
How to test a mouse jiggler
- Open this page in Chrome or Edge, leave "Keep the screen awake" on, and press Start. Allow idle detection when the browser asks.
- 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.
- Watch the Computer input row. If it turns grey, your computer saw no input, and Teams goes Away 5 minutes after your last touch. If it stays green, the jiggler reaches the computer.
- 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 Slack 10 minutes after your last click, key or scroll in Slack. 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?
Teams and Zoom, usually yes: they count input anywhere on the computer, so a device that moves the pointer more often than every 5 minutes keeps them available. Slack counts only input in its own window, so a jiggler keeps Slack active only while the pointer sits over the Slack window. Run the test with your device plugged in: if the computer input row stays green with your hands off, the device reaches the computer.
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
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