Fix text typed in the wrong keyboard layout with a single hotkey.
Select → hit Ctrl + M (default) → watch gibberish turn into the text you meant to write — and keep on typing in the correct layout.
Ever discovered you’ve written half an email in gibberish instead of your desired language?
Switching layouts, re-typing, or copy-pasting into online converters breaks your flow.
Language Flipper lives in the background: one hot-key and the garbage text is replaced in-place with its correct-layout twin.
| ⚡️ | Fast — sub-100 ms round-trip |
|---|---|
| 🎚️ | Fully configurable: pick any two layouts, map any characters, choose your own hot-key |
| 🕶️ | Runs silent — a single statically-linked .exe (no DLLs, no installer) |
| 🔄 | Auto-flip option: after correction, it switches Windows to the right layout so you can keep typing |
- Download the latest release from the Releases page.
- Double-click
Language Flipper.exe. - Select some wrong-layout text and press Ctrl + M (default).
- 🌟 Magic! 🌟
All runtime options now live in a simple file: config.json —
not in a .h file! This makes tweaking layouts, keymaps, and hotkeys as easy as editing a text file (no coding or recompiling).
💡 A full configuration guide is included as
res/confing_readme.md.
See it for detailed instructions, examples, and code snippets.
| Setting | Purpose | Example / Default |
|---|---|---|
DEBUG_MODE |
Show debug logs/console window | false |
LANG_PRIMARY / SUBLANG_PRIMARY |
The layout you accidentally type in | English (US): 9, sublang: 1 |
LANG_SECONDARY / SUBLANG_SECONDARY |
The layout you want | Hebrew: 13, sublang: 1 |
ROLE_NAME_PRIMARY / ROLE_NAME_SECONDARY |
Human-readable layout names | "English", "Hebrew" |
KEYMAP_PRIMARY_TO_SECONDARY |
Character mapping, in JSON, no recompilation needed | "q": "/", "e": "ק" etc. |
*_HOTKEY_MODIFIERS / *_HOTKEY_VK / *_HOTKEY_ID |
Hotkey definition for each action | See below |
AUTO_FLIP_ON_CHANGE |
Flip Windows layout after correction | true |
Hotkey settings now support:
- Basic hotkey: Corrects current selection (default: Ctrl + M)
- Line hotkey: Selects & corrects the current line (default: Ctrl + Alt + M)
- All hotkey: Selects & corrects all text (default: Ctrl + Alt + N)
Each hotkey can be customized in config.json with human-friendly lists like ["ctrl", "alt"] for modifiers, and "m" for the key.
`` "BASIC_HOTKEY_MODIFIERS": ["ctrl"], "BASIC_HOTKEY_VK": "m", "BASIC_HOTKEY_ID": 1,
"LINE_HOTKEY_MODIFIERS": ["ctrl", "alt"], "LINE_HOTKEY_VK": "m", "LINE_HOTKEY_ID": 2,
"ALL_HOTKEY_MODIFIERS": ["ctrl", "alt"], "ALL_HOTKEY_VK": "n", "ALL_HOTKEY_ID": 3, ``
See the release folder for a sample config and README.
- Start Language Flipper.exe (it hides itself unless
DEBUG_MODEistrue). - Select text that looks wrong, or use the hotkeys to select a line or all text:
- Ctrl + M (default): Correct currently selected text
- Ctrl + Alt + M: Select and correct the current line
- Ctrl + Alt + N: Select and correct all text in the active window
- The junk text is instantly replaced with the correct letters.
- If
AUTO_FLIP_ON_CHANGEis enabled, your system layout also switches so you can keep typing.
Tip: All hotkeys are customizable in
config.json.
Works everywhere: VS Code, Word, Chrome address bar, Discord, even the Windows Run dialog!
- Registers a global hot-key via
RegisterHotKey. - On trigger:
- Simulates Ctrl + C to copy the selection.
- Detects the active thread’s keyboard layout with
GetKeyboardLayout. - Transforms clipboard text by walking the
KEYMAP. - Types the corrected text back using
SendInput. - Optionally flips the layout with
LoadKeyboardLayout+ActivateKeyboardLayout.
All logic fits in ~300 lines across main.cpp, utils.cpp/h, and config.h.
Got an idea? Open an issue!
Language Flipper is distributed under the MIT License.
See LICENSE.MIT for full text.
This project includes nlohmann/json,
which is also MIT-licensed and included under the same license file.
© 2025 Omer Blau. Attribution is appreciated!