Wonder Captions

Auto-Generate Video Subtitles

Only for Mac

Free

Mac

Wonder Captions automatically generates and burns subtitles into your videos — entirely on your Mac. No cloud. No subscription. Your videos never leave your device. AUTOMATIC TRANSCRIPTION Powered by on-device AI speech recognition. Accurate, word-level timing — no internet connection needed. BILINGUAL SUBTITLES Generate subtitles in English, or add Traditional Chinese as a second language using Apple's on-device translation. Perfect for bilingual creators and international audiences. TIMELINE EDITOR Fine-tune every subtitle segment with a professional timeline. Drag segment edges to adjust timing. Hover-scrub through thumbnails. Edit text inline. All with centisecond precision. LIVE PREVIEW See your subtitles rendered on top of your video in real-time as you edit. What you see is what you get. 10 BUILT-IN FONTS Choose from 10 fonts optimized for both English and Chinese characters — from clean sans-serif to playful handwritten styles. Three size options to match your video style. BURN-IN EXPORT Subtitles are permanently embedded into your video. No separate subtitle files to manage. Export as MP4 or MOV with hardware-accelerated H.264 encoding. PROJECT-BASED WORKFLOW Save your work as a project file. Come back later, adjust your subtitles, and re-export. Auto-saves every 30 seconds. PRIVACY FIRST Everything runs locally on your Mac — transcription, translation, and encoding. Your videos are never uploaded anywhere.

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New Features: • You can now see the available fonts in their respective style during selection • You can now submit feature requests and vote on others from within the app

Version 1.1

The developer, Jacek Hermann, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    Accessibility

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Information

    Seller
    • Jacek Hermann
    Size
    • 341.7 MB
    Category
    • Photo & Video
    Compatibility
    Requires macOS 15.7 or later.
    • Mac
      Requires macOS 15.7 or later.
    Languages
    • English
    Age Rating
    4+
    Copyright
    • © 2026 Jacek Herman
  • Developer Website
  • Privacy Policy