Download and move the app to the Applications folder on your Mac.

Here we show how you can use the Transnomino app. There are a number of apps for the Mac to help you batch rename files on your machine and you can use any of those to do your task. However, if you have special demands for renaming your files, you may want to use a third-party app to do the task. In most cases, the above two methods will get the job done for you. Using A Third-Party App To Bulk Change File Names You can then drag your files onto the app in the Dock for renaming.

If you want to make the app more accessible, you can drag and drop it onto your Dock.

Interface languages are available in English, French, German, Japanese, Spanish, Italian, Simplified and Traditional Chinese.The custom Automator app will instantly rename your files using your pre-defined options.

Change skins to get different visual experience.

Order files and folders by clicking columns like path and type.

Click the arrowhead button on the Mac file renamer's interface to move file or folder's position simply.

Changes could be applied to filename, extension, or both of them as you like.

Multiple ways to realize positioning, such as from beginning/end and after/before a string options.

'Search for' and 'Replace with' options for you to replace character(s) easily.

start position, increment, and digit, so you can choose any position to add the order number as you like. ImTOO File Rename for Mac provides you abundant settings for format of order number, e.g.

Add sequence number to file and folder names.

Several ways to define current and target position according to your own need for moving character, besides, you can choose the number of character(s) to move or delete from '1' to '99'.

Delete & insert string in any position of the filename.

Case change like upper or lower any letter or string in filename or extension on your Mac is very easy.

Osx rename multiple files