Transnomino for Mac

What the app does

Transnomino is a free macOS utility that lets you rename many files in one go. It streamlines the way you organize files by providing several flexible renaming actions, so batches of filenames can be updated quickly and consistently.

Main features

• Find-and-replace portions of filenames to correct or standardize text across many items
• Add custom prefixes or suffixes to filenames for categorization or versioning
• Swap or update file extensions when you need to change file type labels
• Live preview of the results so you can confirm changes before they are applied

Supported formats and workflow

Transnomino handles a broad range of file types commonly used on the Mac. The app presents clear options for building renaming rules and shows how the new names will look, reducing the chance of mistakes. Its straightforward controls make setting up batch operations fast, even for users who haven’t done mass renaming before.

A recommended alternative

If you want another free option, consider TouchDesigner by Derivative — it also supports large-scale filename handling and provides advanced customization for users who need more control.

Why choose this tool

For anyone who needs to tidy up large numbers of files or enforce consistent naming, Transnomino is a practical choice. Its combination of useful renaming operations, preview capability, and an intuitive interface helps speed up file management and improves workflow efficiency.