Magick::read("image.jpg") do |f| f.write("manipulated.jpg") end

image = MiniMagick::Image.open("input.jpg")image.resize "100x100"image.write  "output.jpg"

image = MiniMagick::Image.open("input.jpg") image.combine_options do |c| c.sample "50%" c.rotate "-90>" end image.write "output.jpg"

http://www.ruby-doc.org/gems/docs/j/jf--mini_magick-3.1/README_rdoc.html