Keyboard event tester
Highlight pressed keys and inspect modifiers, repeats and a downloadable local keyboard test session.
Click Start, then press keys in the test area. Escape or moving focus stops capture. Browser/OS shortcuts may be intercepted. Nothing is recorded outside this area; avoid entering passwords. Up to 1,000 local events.
Capture stopped
Pressed: None
0 events · 0 repeats
What it does
Highlight pressed keys and inspect modifiers, repeats and a downloadable local keyboard test session.
How to use it
- Click Start new test, then press keys in the focused test area.
- Escape or moving focus stops capture. Finish and download exports the local event summary.
- Processing stays in this browser. No sign-up or upload.
Example
Holding A produces a keydown followed by repeat events on typical keyboards.
Methodology
Focused React keyboard events record key, physical code, modifiers, repeat status and relative elapsed milliseconds.
Limitations
Up to 1,000 events. Browser/OS shortcuts may never reach the page. Layout labels are illustrative; physical testing needs a person. Do not enter passwords. No background capture.
Automation
This tool runs in your browser. No upload API or MCP endpoint is available.
View capabilities and documentationReference updated
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