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Press all regular keys for an easter egg
There is no difference between left and right Shift, Control, Alt, and Command or Windows.
Keys that work show up in green
Grey keys cannot be tested.
Press multiple keys at once to test for ghosting.
Click the button above to toggle the special keys.
The Numpad numbers are shown on the normal bar when tested.
It is, of course, for anyone with a keyboard who wants to test how well it works
However, there are some people this is particularly helpful for
Namely, hardware managers -- people in charge of maintaining the stock of hardware, for examples in offices and schools
If you have to test 25 keyboards, it is a big help to use a site like this.
What may have been a job of a few hours can now be done in a matter of minutes.
If you want to check for ghosting.
If you want to know how many keys your computer or laptop's keyboard can register at one time.
If you want to know whether your F1 to F12 keys still work, because that can be tricky to find out since you cannot just type them in a document.
Find out if the typing problems you're having are due to software or hardware.
It doesn't matter whether you're using a Mac keyboard or a Windows keyboard, the keyboard test adapts automatically to your system.