Fix mistyped text in one keystroke on macOS
Typed in the wrong keyboard layout? Press Shift twice and LangSwitcher converts it instantly. A free, open-source macOS menu bar app — no selection needed, Smart Conversion handles it.
See it in action
How it works
- You type in the wrong layout
ghbdtn rfr ltkf — happens to every bilingual user.- Press ⇧⇧ (Double Shift)
No need to select text — Smart Conversion detects the boundary automatically.
- Text is fixed
привет как дела — converted in milliseconds, pasted back in place.Features
Instant Conversion
Press a hotkey and text is converted in milliseconds through clipboard-based replacement. Works in any app.
Smart Conversion
No need to select text. Greedy Line mode auto-detects where the wrong layout begins and converts only what's needed.
Double Shift Hotkey
Default hotkey: press Shift twice quickly. Or record any custom shortcut in Settings.
Conversion Log
Every conversion is logged to a local SQLite database. Rate results, export as JSON for ML training.
5 Layouts
English, Russian, German, French, Spanish. Auto-detected from system keyboard settings.
Privacy First
No data leaves your Mac. No analytics, no telemetry, no network access. Fully offline. Open source under MIT.
Open Source & Community
LangSwitcher is free, open-source software under the MIT license. Contributions are welcome!