JamoMoa
Recompose the marks macOS pulls apart, so your filenames never break elsewhere.
macOS 14.0 (Sonoma) or later · Apple Silicon · Intel

Preview first, convert only when you press. Korean, Japanese, and Vietnamese in one flow. Lives in the menu bar, with quick options at hand. And now from a Finder right-click or Shortcuts — without opening the app.
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Mac App Store
Install from the App Store
Coming soonFirst time? Getting Started walks you through first launch and updates.