UTIdefaults

Every file type, its app.

Only for Mac

Free

Mac

Easily manage default apps, file extensions, and UTIs on macOS with full control over standard, viewer, and editor application roles. Take full control of file associations on macOS with UTIdefaults, a modern, native utility designed to streamline how your system opens and edits files. Built entirely with SwiftUI and optimized for both Apple Silicon and Intel Macs, UTIdefaults provides a fast, centralized interface to inspect, search, and manage system-wide default applications by UTI (Uniform Type Identifier) and MIME type, eliminating the need to manually adjust settings file-by-file in Finder. Key Features: - Centralized File Association: Quickly view and set default applications for documents, media, source code, archives, and other file formats. - Standard & Advanced Modes: Use Standard Mode for a familiar, Finder-like workflow, or switch to Advanced Mode to configure Viewer and Editor roles independently. - Smart Search Scope: Easily find file types by name, extension, or both. Search extensions with or without a leading dot (e.g., txt or .txt). - Flexible UTI Visibility: Tailor your view with three flexibility levels—Preferred MIME for a clean overview, Selectable UTIs for actionable items, or Show All UTIs for comprehensive system inspectability. - Do Nothing Handler: Assign a built-in, lightweight helper app to file types you prefer macOS to handle safely without launching external programs. - Modern & High-Performance: Distributed as a Universal Binary featuring a multithreaded architecture for a responsive, single-window user experience. Note: UTIdefaults manages UTIs registered within macOS LaunchServices. For custom file extensions to appear, at least one installed application must declare the corresponding UTI in its metadata.

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Little UI improvement with transition effect added while updating Details View

Version 1.2.6

The developer, Fiorenzo De Santis, 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

    The developer indicated that this app supports the following accessibility features. Learn More

    • Supported Features

      • VoiceOver

      • Dark Interface

      • Differentiate Without Color Alone

      • Sufficient Contrast

    Information

    Seller
    • Fiorenzo De Santis
    Size
    • 3.3 MB
    Category
    • Utilities
    Compatibility
    Requires macOS 15.6 or later.
    • Mac
      Requires macOS 15.6 or later.
    Languages
    • English and Italian
    Age Rating
    4+
    Copyright
    • © 2026 Fiorenzo De Santis
  • Developer Website
  • Privacy Policy