# Keycode Event Info > Interactive key press visualizer showing JavaScript event codes, keys, and modifier states. **Category:** Dev **Keywords:** keycode, javascript, event, keyboard, input, debug, ascii **URL:** https://complete.tools/keycode-info ## How it works Keycode Info takes your input and matches it against a database of predefined keycodes. Each keycode links to specific keys and their functions across various operating systems. When you enter a keycode, the tool looks it up in its database, organized to accommodate different keyboard layouts and mappings. It then returns a clear explanation of the key connected to your input, including any relevant modifiers or context. ## Who should use this This tool is perfect for software developers troubleshooting keyboard input, game developers setting up custom controls, hardware engineers working on input devices, and researchers exploring human-computer interaction. Educators teaching programming or computer science concepts related to input devices will also find it a valuable resource for their curriculum. ## Worked examples Example 1: Imagine a software developer comes across a keycode value of 65. With Keycode Info, they discover that this code corresponds to the letter 'A' on a standard QWERTY keyboard. They find out this keycode is consistent across both Windows and macOS. Example 2: A game developer wants to set up a keybinding for the 'Escape' key. They enter the keycode 27 into Keycode Info and learn this code represents the 'Escape' key on various platforms. This helps ensure players have a seamless experience regardless of their operating system. Example 3: A researcher inputs a keycode of 112 and finds it corresponds to the 'F1' function key. They note that this key is often used for help commands in applications, which aids in analyzing user behavior related to function key usage. ## Limitations Keycode Info has some limitations. Its database might not cover every keyboard layout or custom key mapping. Certain keycodes can behave differently depending on the software context, which might lead to inaccuracies. The tool assumes users know keycode formats and may not explain every variation. Plus, it might not support rare or specialized input devices, so some keycode info could be missing. ## FAQs **Q:** How does Keycode Info handle different keyboard layouts? **A:** Keycode Info supports various layouts, but it's a good idea to double-check your specific layout to ensure accurate interpretation. **Q:** Can it provide info on non-standard keycodes from custom hardware? **A:** The tool mainly relies on a predefined database, so it may not cover non-standard or proprietary keycodes from custom hardware unless they're included. **Q:** Does Keycode Info consider modifier keys? **A:** Absolutely! The tool provides info about modifier keys like Shift and Control when relevant to the keycode you input. **Q:** Is Keycode Info effective for game development keybindings? **A:** Yes, it's a great resource for game developers, helping them implement consistent keybindings across different platforms. --- *Generated from [complete.tools/keycode-info](https://complete.tools/keycode-info)*