Transnomino
Transnomino is a free Mac batch renaming utility that helps you rename many files and folders at once with rules, previews, and reusable recipes.
What is Transnomino?
Transnomino is a native macOS batch file renaming app for people who need to rename many files or folders quickly and consistently. It helps users build renaming workflows from simple text replacements up to more advanced rules using regular expressions, numbering, case changes, and file attributes. The app can target filenames, extensions, paths, or full paths, which makes it useful for cleaning up downloads, organizing photo libraries, preparing media collections, and standardizing project files. Real-time previewing lets you review the results before committing changes, and saved recipes make it easier to repeat the same renaming steps later. Transnomino also supports attribute-based renaming with metadata such as dates, EXIF information, and media tags, plus automation features for users who want to integrate renaming into larger Mac workflows. It is published by Bastiaan Verreijt.
Key features
- Rename many files and folders in a single batch
- Preview filename and path changes before applying them
- Use find and replace, wildcards, and regular expressions
- Add prefixes, suffixes, inserted text, and sequential numbering
- Rename from file attributes such as dates, EXIF data, and media tags
- Filter subsets of files so different rules apply to different items
- Save reusable renaming recipes for repeated workflows
- Convert names for case changes, diacritic removal, and Windows compatibility
Review app leftovers with diCleaner
Inspect caches, support files, containers, and login items before cleaning.
Safety overview
Status: Safe
Transnomino is a legitimate macOS file-renaming utility whose file access and rename behavior are consistent with its purpose. Because it changes filenames and paths in bulk, the main practical risk is unintended renaming if a rule is too broad or applied to the wrong files. Review the live preview carefully before confirming large batches, especially when rules affect folder paths or metadata-based organization.
Recommendation: Keep Transnomino if you use your Mac to organize photos, media, downloads, or project files in batches. If you no longer use bulk renaming tools, you can remove the app like other user-installed software, but you may want to keep any saved recipes you rely on for repeat workflows.
Common paths
/Applications/Transnomino.app
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