Keycode Info

What is Keycode Info?

Keycode Info is a free online developer & code tool available on ToolDeft. Press any keyboard key and get its JavaScript keyCode, key name, and Unicode value. It runs entirely in your web browser — there is nothing to download, install, or configure. You can start using it immediately, on any device, without creating an account or providing any personal information.

How to use Keycode Info

Using Keycode Info takes only a few seconds. Follow these steps:

1. Enter your input. Type, paste, or upload your data into the field provided in the tool above. The tool is designed to accept a wide range of input values and formats without any pre-processing on your part.
2. Adjust settings if needed. Some options or parameters may be available to customise how the tool processes your input. These are optional and have sensible defaults so you can skip them if you want a quick result.
3. Get your result instantly. The result is calculated instantly inside your browser with no delay. You can copy it to your clipboard, download it, or share it directly from the page.

Who uses Keycode Info?

Keycode Info is straightforward to use with a basic understanding of the task. It is used by students who need quick answers for assignments and revision, by professionals who need reliable results without switching between applications, by developers who want a fast utility in their workflow, and by anyone who simply wants to press something accurately without spending time on manual calculation or research. Because it is entirely browser-based and free, there are no barriers to access — anyone with an internet connection can use it immediately.

Why use Keycode Info on ToolDeft?

All processing happens entirely inside your browser. Your data is never uploaded to any server, which means complete privacy and security on every use. The tool is completely free with no usage limits, no advertisements blocking the interface, and no sign-up wall. It works on desktop computers, laptops, tablets, and smartphones without any loss of functionality. Results are delivered instantly, making it far faster than searching through documents, manuals, or reference tables manually.

Frequently asked questions

Is Keycode Info free to use?

Yes, Keycode Info is completely free. There is no subscription, no credit card required, and no hidden cost. You can use it as many times as you need without any restrictions.

Do I need to create an account?

No account is required to use Keycode Info. Open the page, use the tool, and leave. If you create a free ToolDeft account you can save your results and access your history, but the core functionality is fully available to guests.

Does Keycode Info work on mobile?

Yes. Keycode Info is fully responsive and works on all modern smartphones and tablets. The layout adapts to smaller screens so you get the same functionality on mobile as on desktop.

Is my data safe when using Keycode Info?

Completely. All processing happens inside your browser and no data is sent to any server. Nothing you enter is stored, logged, or shared. You can use Keycode Info with full confidence that your information remains private.

Keycode Info is a free, browser-based tool that helps developers and engineers work with keycode info. Simply enter your data and the result is ready without any delay. Built for privacy: everything is processed on your device with no server round-trips and no data storage. Used daily by front-end developers, back-end engineers, and full-stack teams. Keycode Info is free, forever. Open it anytime, as often as you need.

Decode Every Keyboard Event with the Keycode Info Tool

If you have ever written a JavaScript event handler for keyboard input, you know the pain. Is it event.key, event.code, event.keyCode, or event.which? Which property gives you the physical key versus the character produced? What value does the Enter key return on different operating systems? Our Keycode Info tool answers all of these questions in real time. Press any key on your keyboard and instantly see every property the browser reports, neatly organised and explained.

Why Keyboard Event Properties Are So Confusing

The Web API for keyboard events has evolved through three decades of browser history, and backwards compatibility has left us with overlapping, sometimes contradictory properties. The deprecated keyCode property returns a numeric code that varies between browsers for certain keys. The newer key property returns a human-readable string like "Enter" or "a", but its value changes depending on whether Shift or CapsLock is active. The code property identifies the physical key regardless of layout, so pressing the key in the QWERTY "Q" position always returns "KeyQ" even on a Dvorak or AZERTY keyboard.

Understanding the distinction between these properties is critical for building accessible, internationalised web applications. A keyboard shortcut bound to keyCode 65 works fine on an English layout but fires on the wrong key when a French user presses "Q" (which is where "A" sits on AZERTY). Binding to event.code instead gives you layout-independent behaviour. This tool makes those differences visible and tangible.

What the Tool Shows You

Press any key and the display updates instantly with the following information: the event.key string, the event.code identifier, the legacy event.keyCode number, the event.which value, and the state of all modifier keys (Shift, Control, Alt, Meta). It also indicates whether the event is a keydown, keyup, or keypress (where supported), and whether the key is a printable character or a control key.

For special keys like function keys, arrow keys, media controls, and international input method composition events, the tool displays additional context explaining how browsers handle these edge cases. This reference data saves you from hunting through MDN documentation or Stack Overflow threads every time you encounter an unfamiliar keycode.

Use Cases Beyond Debugging

Game developers building browser-based games need to know exact key mappings to bind movement, actions, and menu navigation. This tool lets you verify bindings across different keyboards and operating systems. Accessibility specialists use it to confirm that keyboard navigation works correctly for screen reader users, ensuring that focus traps, skip links, and custom widgets respond to the expected keys.

Students learning JavaScript find the visual feedback invaluable. Instead of reading abstract documentation, they press keys and see immediate, concrete results. Teachers can project the tool during lectures to demonstrate keyboard event concepts interactively.

Cross-Browser Quirks Exposed

Some keys behave inconsistently across browsers. The right-side Alt key on European keyboards triggers AltGraph in some browsers and Alt in others. The Windows key and the Mac Command key share event.metaKey but differ in event.code. This tool captures and displays whatever the current browser reports, giving you ground truth for your specific environment.

Everything runs in-browser with no data transmitted anywhere. Bookmark the keycode info tool and keep it one tab away for those inevitable moments when keyboard events refuse to cooperate.