Key Code & ASCII Reference

Tool Guide

Tool Introduction

The Online Keyboard KeyCode and ASCII Code Real-Time Capture Detector is a high-frequency interactive debugging must-have built for front-end interaction developers, game control script writers, and web designers. It supports real-time monitoring of any key on your keyboard, visualizing the key's `event.key`, `event.code`, and the classic `event.keyCode` property values in milliseconds.

Core Features

1. Three-dimensional dynamic key event monitoring: Captures and details all core states of a key in real time: including the key name, physical code value, hexadecimal ASCII code value, and whether modifier combinations such as `Alt` / `Ctrl` / `Shift` / `Meta` are pressed.
2. Extra-large, minimalist on-screen card: Uses a beautifully designed, large-font neon card to display the current KeyCode (for example, the `A` key shows a huge `65`), providing ultimate visual clarity so you never have to squint while debugging.
3. Zero-lag native browser capture: Runs 100% on native browser JavaScript key events, with no server translation required, delivering instant response and extremely efficient debugging.

How to Use

1. Open the tool page and make sure the mouse focus is within the current page.
2. Press any single key you want to detect on the keyboard (for example, the `Enter`, `Shift`, or `Space` key), and the page will instantly highlight and refresh.
3. The debug card will clearly display the key's English name, KeyCode, Code, and character state, and you can copy the code variable you need with one click.