# Convert images with attachment\_fu

**URL:** <https://www.ruby-forum.com/t/convert-images-with-attachment-fu/157986>\
**Category:** Rails\
**Created:** [January 17, 2009, 11:17am UTC](https://www.ruby-forum.com/t/convert-images-with-attachment-fu/157986 "2009-01-17T11:17:03Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![stratboy](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/838e76/32.png) [@stratboy](https://www.ruby-forum.com/u/stratboy)\
**Post date:** [January 17, 2009, 11:17am UTC](https://www.ruby-forum.com/t/convert-images-with-attachment-fu/157986/1 "2009-01-17T11:17:03Z")

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Hi, i’m using attachment fu plugin and mini magick for upload images.

class Photo \< ActiveRecord::Base  
has\_attachment :content\_type =\> :image,  
:storage =\> :file\_system,  
:max\_size =\> 4.megabytes,  
:resize\_to =\> ‘700x650\>’,  
:path\_prefix =\> ‘public/images/cores’,  
:thumbnails =\> { :thumb\_big =\> ‘62x62!’, :thumb =\>  
‘30x30!’ },  
:processor =\> :MiniMagick

I noted that when a user upload a jpg, the thumnails are very expensive  
(32k for :thumb). so i want convert all thumbnails to gif or png format.

is possible?  
thanks

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<div class="post-metadata">

**Author:** ![stratboy](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/838e76/32.png) [@stratboy](https://www.ruby-forum.com/u/stratboy)\
**Post date:** [January 18, 2009, 9:56pm UTC](https://www.ruby-forum.com/t/convert-images-with-attachment-fu/157986/2 "2009-01-18T21:56:45Z")

</div>

Luca,

It’s probably possible to do it with one of the various image  
libraries available, but never seen that as a feature of  
attachment\_fu…

Cheers, Sazima

On Jan 17, 8:17 am, Luca R. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)