Batch Rename Files in Mac OS X with Name Mangler

Mar 30, 2010 - 10 Comments

If you have a bunch of files you need renamed on your Mac then Name Mangler is where it’s at. You can easily batch rename tons and tons of files just by dragging and dropping them into the application. Name Mangler goes beyond just renaming something from file1 to file2 though, there are many more advanced batch renaming capabilities including:

* Find and Replace (find all instances of Blah in filename_Blah and replace with Wow)
* Number Sequentially (file1, file2, file3)
* Change Case (caps to lowercase, vice versa)
* Set an Extension (make all files .txt or the like)
* Add a Prefix or Suffix (Filename.jpg to Filename-trip.jpg)
* Remove or Insert Characters
* and more in the advanced settings…

Name Mangler is free to download and use. It’s donation wear so if you like it enough, let the developer know with your wallet. Name Mangler was free to use and used to be donation wear, but now the developer is charging $10… thank you to treks for pointing this out in the comments. You can still download a free trial of Name Mangler though, and if you like the app it may very well be a worthwhile purchase for you.

Name Mangler developer home

The interface is pretty straightforward, and it works in modern versions of OS X:

batch rename files mac

Another similar utility worth checking out is a free tool called Name Changer, which is a donationware app instead of a paid program. It’s also a great utility that serves more or less the same function, but which app you prefer to use may be a matter of personal preference.

What do you think? Do you prefer Name Mangler or NameChanger? Do you think there’s a difference in the quality of the apps, being paid vs free?

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Posted by: Paul Horowitz in Mac OS X, OS X Apps


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  1. treks says:

    sorry to brag, but when was the last time you visited developers site?

    that big “Buy Now 10$” button doesn’t say ‘freeware’ to me :)

  2. Too much coffee says:

    I bet the developer saw the link and wanted a quick buck, LOL! Since this isn’t free anymore, what is a good free batch renaming solution? I’d love to rename my picture imports to something more meaningful rather than the standard IMG_912.JPG names that mean nothing to anyone. I know you can do this with Automator but that seems overly complex.

  3. treks says:

    name mangler gone $$ some time ago, i’ve been using it for some time. update came up and asked me to pay. :/ i just don’t update and it works.

    as alternative try builtin automator.

    • fruitOfTheBoom says:

      One reason why I never check automatic update in preferences for the vast majority of apps … another reason is to avoid the unexpected hassles apps have with OS upgrades. In short, if it ain’t broke why upgrade it ?

  4. Andy Dykstra says:

    Automator already does all of this and it comes with the mac OS.

  5. Jonas says:

    You can also try NameChanger, it has many of the same features.

  6. Jonas says:

    Here’s a link to NameChanger’s website where you can download it for free:

  7. Kenth Just says:

    This is a nice software but it is can Add a Prefix or Suffix (Filename.jpg to Filename-trip.jpg). Remove or Insert Characters? Here’s a Windows solution:

    FileRenamer – no mac version

  8. […] yes, we did a prior post on software to batch rename files in Mac OS X but the developer decided to turn the once donationware software into a paid solution. For now […]

  9. Micah Prange says:

    Use a bash (or tcsh, … ) do loop. The following script changes filenames ending in .dat to filenames ending in .txt. You can type it as is into the command line or put it in text file and execute it. This might work in bash; a quick search will reveal how to do it in other shells. If you learn a little scripting you don’t have to look for a separate app (and then bitch and moan when the developer wants to be compensated for his work!) for each small task. The power of the pc lies in its programmability. Take the power for yourself!

    for oldfile in *.dat
    newfile=`echo $file | sed ‘s/dat/txt/’`
    echo “$oldfile –> $newfile”
    mv $oldfile $newfile

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