What Is a Keyboard Tester?
A keyboard tester shows whether every key registers correctly. Learn when to test your keyboard, the signs of a failing key and how to run a test.
Step-by-step keyboard how-tos: unlock and reset keyboards, connect them to an iPad, clean a laptop keyboard and use handy keyboard shortcuts.
A keyboard tester shows whether every key registers correctly. Learn when to test your keyboard, the signs of a failing key and how to run a test.

Want your keyboard to glow a different color? Learn how to check for RGB lighting and change keyboard colors with software, key shortcuts and settings.

Restart your Mac using only the keyboard: the standard restart shortcut, how to force restart a frozen Mac and what to do when shortcuts don't work.

Turn off your PC or Mac without a mouse. Keyboard shortcuts like Alt + F4 and Ctrl + Alt + Delete for Windows, plus the shutdown shortcuts on Mac.

Clean your laptop keyboard without damaging it: simple steps for daily cleaning, clearing crumbs with compressed air and dealing with spills.

Make the iPhone keyboard easier to use with Display Zoom, landscape mode and full-width typing. Learn which settings change key size and which do not.

Keys acting up? Learn how to reset your keyboard on Windows and Mac, from Device Manager and keyboard settings to resetting a wireless keyboard.

Restore a small floating or split iPad keyboard to full size. Follow the pinch-out and Dock and Merge steps, plus landscape and accessibility options.

Connect a Bluetooth, Smart or USB keyboard to your iPad step by step, plus fixes for when your iPad won't pair with or detect the keyboard.

Switch browser tabs without touching the mouse. The keyboard shortcuts for Windows and Mac, including how to jump straight to a tab by its number.
Test every key on a keyboard in your language or layout. See all language keyboards.