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ff_rename is a very powerful renaming tool that you need, if you need to rename a large number of files.

These are the key features:

  • simple / expert mode
  • very powerful selecting / unselecting tools
  • regular expressions (egrep)
  • undo of renaming
  • very complex naming rules possible
  • saving and loading of rules
By using complex renaming rules you can
  • use EXIF information (SHUTTER value, creating date) for renaming
  • uppercase / lowercase filenames
  • trim filenames to a certain length (start or middle or end of target area) or by removing spaces or more...

What's New

Version 0.5:
  • now with loading and saving rules
  • minor Bugfixes
NOTE:Please read the release notes within the online help for important informations
now directly accessible via the help menuPlease use the comment function for improvements or things that could be made better.


Mac OS X 10.4 or later

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ff_rename User Discussion

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 (Developer) Member IconDev+3

support of this application is discontinued, see developers page for more information.

Reply0 replies
Version 0.5
 (Developer) Member IconDev+3

0.5.0 will be the last version supported.

if you like me continuing the app, either flattr it or suggest a price you will pay in mac app store.

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Version 0.5
Fredducker Member IconReview+43

It does the job... but it's very basic! Lots of features are not easy to understand, for example how do i clear a list and do another batch? I had to quit and relaunch each time... Also, the "read subdirectories" function doesn't work for me. I dragged a folder full of folders and only the first one was opened by the app...
The Icon looks awful.

Reply1 reply
Version 0.5

> It does the job... but it's very basic!

Yes - you want to enable expert mode by visiting the preferences but to be honest, the simple mode is in because the "now expert mode" was daunting to my fellow beta testers.

I wrote this tool to do complex renaming operations without using the shell - and I'm still using it. It may be not as easy as other ones to use but it has decent "renaming power" you will not find in other tools (if you are able to understand the logic behind and how to formulate roles)

> Lots of features are not easy to understand, for example how do i clear a list and do another batch?

Well, you drag and drop a list of files onto the window, it replaces the previous one.

read subdirectories only works in export mode as you have no GUI in simple mode to
see a path component. Simple mode: drag folder, rename, next folder. Anything beyond that: export mode

> The Icon looks awful.

I'm sorry about that but the icon will stay. But it is very easy to replace it (while I do not recommend it).

A884126 Member IconComment+0

I could not figure how it works to rename files with number sequentially...

Reply1 reply
Version 0.5

simple mode:

1) first chose where to append number (see "select what to modify" on the lower left)
2) press number
Deppending on the action selector a number will be append either on the base name or the extension (only append is possible).

export mode:

1) select the files you want to operate on (all files that have a checkmark)
2) build a rule that will generate your desired output
(here we assume you want to generate a number and appending it to the base name)
a) add 3 tokes to the rule editor (pressing 3x the plus button on the right)
b) modify first token to SYS:BASE
c) modifiy second token to Counter:1
d) modify thrid token to SYS:EXT
3) press show preview
4) if rule will generate your output press rename otherwise undo and redefine you rule

Using export mode boils down to 2 things
1) you must understand how to select you files with the select operators
2) you must understand how the tokens work

The application will go thru every selected file and apply the token rules against each selected filename. The name will be constructed from ground up each time. Because of this you must base your rules on the old name and this is the point where the diffent tokens come into play. SYS-BASE for example is the current base name while SYS-EXT is the current extension.

With the above rule the application will replace each selected filename with:

[old basename][Counter][old extension]

(note: these are not token names just a function example)

which has the effect that a counter is inserted before the extension.

As soon the have leaned this you can build very complex renaming operations because the tokens are evalueate from left to right their position is changing the result of the rule.
With above example but different positions:


will prepend a number before the your filename.

msadesign Member IconReview+1

What a sweet little app- and free! Yes, I found the interface a little unusual: I couldn't figure out how to get a new window then saw you just drag a new folder over. And I wanted to remove the word 'alias' from the end of a huge number of aliases, and it worked very well when I told it that 'alias' is an extension.

But so what? saved me a bunch of work and obviously a labor of love. I appreciate the work. And the price :-)

I'd like to give it a 5, but I know the developer agrees there's more work, and that is the only reason I gave it less than 5.

Did I mention it's free?

Reply0 replies
Version 0.5
mac4drew Member IconReview+24

It works, at least for basic file renaming. I haven't tried any of the advanced features, but this app deserves a five-star rating for having no limitations, being free, and working.

Reply1 reply
Version 0.4


thanks for the review.

Due upcoming changes I would like to set the current features in stone (0.5 will have saving/loading of rules - versions after this will build on the interal classes with the current features)

So if you miss something (that maybe another app has) please report it here :-)

Other remarks (especially critics or suggestions for improvement) are highly welcome!

 (Developer) Member IconDev+3

Hi There!

If you downloaded the app and found a bug, please report it back to the developer.

Thank you.

Reply0 replies
Version 0.3
There are no Ratings for this App yet.
> 4 3


Current Version (0.x)


Downloads 6,514
Version Downloads 5,926
License Free
Date 26 Feb 2009
Platform OS X / PPC 32 / Intel 32
Price Free
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