CarrierWave: How to remove GIF animation

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When accepting GIF images, you will also accept animated GIFs. Resizing them can be a time-consuming task and will block a Rails worker until the image is processed.

Save yourself that trouble, and simply tell ImageMagick to drop any frames but the first one.

Add the following to your uploader class:

process :remove_animation

private

def remove_animation
  if content_type == 'image/gif'
    manipulate! { |image| image.collapse! }
  end
end

You may also define that process for specific versions only (e.g. only for thumbs) -- when called on the class level, it will happen for each version.

Arne Hartherz
Last edit
Michael Leimstädtner
License
Source code in this card is licensed under the MIT License.
Posted by Arne Hartherz to makandra dev (2014-12-22 12:36)