Keyboard Tester
Online keyboard tester: press any key and it lights up instantly, with desktop 104-key and laptop layouts. Spot dead or stuck keys quickly — no install needed.
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Usage Guide
- Open the tool and a full-size 104-key desktop keyboard appears. On a laptop, click the 笔记本键盘 (laptop keyboard) button at the top left to switch to the compact layout.
- Press the keys you want to check one by one: tested keys turn green, held keys highlight, and the progress bar at the top shows how many keys you have tested and the completion percentage.
- The live status panel shows the last key pressed and its key code. Holding several keys at once records the 同时按住峰值 (peak simultaneous hold) count, which you can use to gauge multi-key rollover (anti-ghosting).
- The 未测试的按键 (untested keys) panel lists every key that has not responded yet and shows the remaining count; once everything is tested it displays a clear pass message.
- Click 复制测试结果 (copy results) to export a text report covering the layout, keys tested, peak simultaneous holds, total presses and any unresponsive keys — useful for warranty claims or second-hand sales.
- Click 重置 (reset) to clear all test status and start over.
Features
- Keys highlight the instant they are pressed and turn green once tested — every key's state is visible in real time.
- Switch between a full-size 104-key desktop layout (with number pad) and a compact laptop layout in one click.
- Progress bar with tested/total counts, plus an automatically updated list of untested keys.
- Shows the key name and key code; the peak simultaneous-hold counter helps you gauge multi-key rollover (anti-ghosting).
- Copy a full test report in one click — handy for warranty claims and second-hand sales.
- Runs entirely in your browser, no install; works with USB, Bluetooth and wireless keyboards.