System tool
Keyboard & Mouse Tester
Test keyboard press and release events, key codes, mouse buttons, wheel direction, and pointer movement in real time without installing software.
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Complete guide
How to use Keyboard & Mouse Tester
When to use it
Test keyboard press and release events, key codes, mouse buttons, wheel direction, and pointer movement in real time without installing software.
01
Three-step workflow
- 1
Click the test panel once so it can receive keyboard input.
- 2
Press each keyboard key and use the left, middle, and right mouse buttons and wheel.
- 3
Check the pressed/tested key colors, last key code, pointer position, and wheel direction.
02
What to enter and check
Click the test panel once so it can receive keyboard input.
Use Reset to clear tested keys and readings before starting another pass.
A blue key and a displayed key/code mean the browser received the input. Some system keys and browser shortcuts may not be exposed.
Practical example
When one key seems faulty, alternate between a known working key and the suspect key and compare the code and pressed indicator.
How to read the result
A blue key and a displayed key/code mean the browser received the input. Some system keys and browser shortcuts may not be exposed.
05
Before you use the result
- Some browser shortcuts and operating-system keys may be intercepted before the page can display them.
- Click the test area first, then check keys and mouse buttons one at a time.
06
Frequently asked questions
How should I read the Keyboard & Mouse Tester result?+
A blue key and a displayed key/code mean the browser received the input. Some system keys and browser shortcuts may not be exposed.
What should I check for a more accurate Keyboard & Mouse Tester result?+
Use Reset to clear tested keys and readings before starting another pass. Some browser shortcuts and operating-system keys may be intercepted before the page can display them.
Is my input uploaded or stored?+
No. This tool processes input in your current browser, and Baro Tool does not store the source content or result on its server.