Key Event Tester

This diagnostic tool lets you type, paste, compose text, and click inside a text area to log keyboard, text input, composition, and mouse click events. It captures details such as key codes, key names, input types, mouse buttons, button states, pointer position, offsets, timestamps, and modifier keys (Alt, Ctrl, Shift, Meta).

Use the filter controls to focus on keyboard, text input, composition, primary click, auxiliary click, or context menu activity. The Clear Log button resets the captured output without reloading the page.

Change Log

• 2026-03-25: Added filter toggles for keyboard, text input, composition, primary click, auxiliary click, and context menu activity, plus a Clear Log button.
• 2026-03-25: Replaced deprecated keypress coverage with beforeinput, input, and composition event logging for modern text entry and IME testing.
• 2026-03-25: Expanded the logged metadata to include input types, key locations, repeat state, button states, offsets, click detail, timestamps, and modifier keys.
• 2026-03-25: Updated the summary, description, and prompt text to reflect the broader input-event coverage.