Professional online keyboard testing tool supporting multiple mechanical keyboard layouts and display styles. Real-time key response detection helps test keyboard functionality, troubleshoot issues, and familiarize yourself with different layouts.

Keyboard Layouts

The tool supports mainstream mechanical keyboard configurations, from compact to full-size:

Compact Layouts

40%: Ultra-compact, 40-50 keys
45%: Balanced portability and practicality
60%: Standard compact layout without arrow keys and function keys
60% HHKB: HHKB signature layout with unique Control key placement
60% WKL: Winkeyless 60% layout without Windows keys
65%: 60% plus arrow keys and navigation cluster

Standard Layouts

75%: Compact layout retaining function keys
80% TKL: Tenkeyless full-size keyboard without numpad
95%: Near-complete keyboard layout
100%: Full-size keyboard with all keys

After selecting the corresponding layout, the page displays a virtual keyboard of that configuration. When you press a physical key, the corresponding virtual key highlights.

Display Styles

Cherry Profile

Standard keycap character display supporting sublegends (such as function layer indicators).

SA Profile

Rounded spherical keycap style with centered characters, no sublegend support.

Sublegend Options

In Cherry style, additional keycap markings can be displayed:

None: No sublegends displayed
Function Layer: Function layer indicators
Vim Layer: Vim editor shortcuts
Media Layer: Media control keys
Navigation Layer: Navigation function keys
Other Custom Layers: Based on keyboard firmware configuration

Sublegends are typically marked in the bottom-right corner of keycaps, used for keyboards with multi-layer key mappings.

How to Use

Select the layout matching your keyboard
Choose your preferred character display style
If sublegends are needed, select the corresponding type
Press any key on your keyboard
The corresponding virtual key will highlight (darker gray)
Test all keys one by one to check response
Click the "Fullscreen" button for fullscreen display

Use Cases

Functionality Testing

Comprehensive testing after new keyboard arrival
Check if keys respond normally
Verify all key functions are intact
Validation after DIY keyboard assembly

Troubleshooting

Detect malfunctioning or poorly-contacted keys
Identify specific key issues
Verify functionality restoration after cleaning
Locate keyboard hardware failures

Learning and Research

Familiarize yourself with new keyboard layouts
Understand differences between various configurations
Learn about mechanical keyboard knowledge
Showcase keyboard layout characteristics

Technical Features

Real-time key response detection
Supports standard QMK keycode mapping
Multiple layout and style switching
Fullscreen mode for optimized display
Pure frontend implementation, no key logging

Usage Instructions

Focus Requirement

Page must have focus before testing. Click anywhere on the page to ensure focus.

Key Highlighting

Virtual keys turn dark gray when pressed, returning to normal color when released.

Special Keys

Some system shortcuts (such as Alt+F4, Ctrl+W) may be intercepted by the browser or system and cannot trigger test effects.

Input Field Exclusion

Keypresses in text boxes or input areas will not trigger testing. Click other areas first.

Fullscreen Display

Fullscreen mode provides clearer observation of key effects, suitable for demonstrations and detailed inspection.

Compatibility

Supported Browsers

Google Chrome
Microsoft Edge
Mozilla Firefox
Safari

Platform Limitations

This tool is for desktop use only and does not support mobile devices. Browser must support keyboard event API.

Keycode Standards

Uses standard QMK keycode mapping, compatible with mainstream mechanical keyboard firmware.

Privacy Protection

Runs completely locally in the browser
Does not record or upload any keypress information
Does not collect keyboard usage data
Safe and reliable local tool

Notes

Ensure the test page has keyboard focus
Avoid testing in input fields
Some system shortcuts cannot be detected
Modern browsers recommended
Desktop use only

Keyboard Tester