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EnglishWhat Is Transnomino and What Does It Do?
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Transnomino is a free batch rename utility for the Mac. It lets you rename many files at once by stacking a sequence of renaming actions, previewing the results in real time before you commit. The current version is 10.1.0 and requires macOS 14 or later; older Macs need a legacy version from the site.
Who it's for
Use Transnomino if you regularly deal with folders of files that need consistent naming — photo libraries, scanned documents, downloaded assets, exports from a design tool. It's a good fit when:
- You want to apply several changes in one pass (e.g., trim a prefix, add a date, then number the files).
- You need to see the outcome before renaming, rather than fixing mistakes afterward.
- You want to rename based on file metadata like creation date, EXIF data, or ID3 tags.
It's less relevant if you only occasionally rename a single file — Finder's built-in rename does that fine.
What it can do
The core idea is that you build a list of renaming actions, and Transnomino applies them in order. Each action can target the filename, the path, the extension, or the full path.
| Action | What it does |
|---|---|
| Find and Replace | Replaces text, with wildcard (*) support |
| Regular Expressions | Advanced find-and-replace using regex |
| Insert Text | Adds custom text at a specific position |
| Prefix / Suffix | Adds text to the start or end of filenames |
| Set Filename | Assigns specific names to files |
| Numbering | Adds sequential numbers |
| Trim | Removes characters from the start or end |
| Case Changes | Uppercase, lowercase, capitalize words, title case, and more |
| Diacritic Removal | Turns "é" into "e", etc. |
| Windows Compatibility | Converts filenames to be Windows-safe |
Because actions are sequenced, you can chain them — for example, strip a camera prefix, insert a date from EXIF, then append a sequence number — and watch the preview update as you go.
Renaming by metadata and path
Beyond text manipulation, Transnomino can pull file attributes into names or paths:
- Dates — creation date and similar attributes can be inserted using preset formats or a custom format you define.
- EXIF and ID3 — photo and audio metadata can be added to filenames.
- GPS to address — for images with EXIF GPS data, latitude and longitude can be used to look up street, city, and country details.
- Path renaming — you can organize files into directories based on attributes, such as sorting photos into folders by date and GPS location.
This is where the tool goes beyond simple find-and-replace: a folder of unsorted photos can become a dated, location-labeled directory tree in one operation.
Preview and automation
Every action is previewed in real time as you build the sequence, so you can confirm the result before applying it. Transnomino also supports automation; the site points to a dedicated automation page for details.
Practical example
Say you have a folder of exported images named IMG_0001.jpg through IMG_0400.jpg and you want them as 2024-trip-001.jpg onward. You'd add a Find and Replace to swap IMG_ for 2024-trip-, then a Numbering action to reset and pad the sequence to three digits. The preview shows the final names; if the padding looks wrong, you adjust the numbering action before applying.
Cost and requirements
The site describes the software as free and offers optional "buy me a coffee" support tiers from €1 to €20. The current download is version 10.1.0 for macOS 14 and later; a changelog and legacy versions for earlier macOS releases are linked from the page.