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.
Posted by Arne Hartherz to makandra dev (2014-12-22 12:36)