Here's a few examples of what RMagick can do. Each of the images on these pages was created using RMagick. To the right of each image is the Ruby program that created it.

This page demonstrates some basic transformations. The next two pages show special effects and the drawing API.

require 'RMagick'

clown = Magick::ImageList.new("clown.jpg")
face = clown.crop(50, 15, 150, 165)
white_bg = Magick::Image.new(clown.columns, clown.rows)
clown = white_bg.composite(face, 50, 15,
                               Magick::OverCompositeOp)
clown.write('crop.jpg')

require 'RMagick'

clown = Magick::Image.read("clown.jpg").first
clown.crop_resized!(75, 75, Magick::NorthGravity)
clown.write('crop_resized.jpg')

require 'RMagick'

clown = Magick::ImageList.new("clown.jpg")
clown = clown.rotate(90)
clown.write('rotate.jpg')

require 'RMagick'

clown = Magick::ImageList.new("clown.jpg")
clown.flip!
clown.write('flip.jpg')

require 'RMagick'

clown = Magick::ImageList.new("clown.jpg")
text = Magick::Draw.new
text.annotate(clown, 0, 0, 0, 60, "My friend!") {
    self.gravity = Magick::SouthGravity
    self.pointsize = 48
    self.stroke = 'transparent'
    self.fill = '#0000A9'
    self.font_weight = Magick::BoldWeight
    }
clown.write('annotate.jpg')

require 'RMagick'

clown = Magick::ImageList.new("clown.jpg")
clown = clown.quantize(256, Magick::GRAYColorspace)
clown.write('monochrome.jpg')

require 'RMagick'

mark = Magick::Image.new(300, 50) do
    self.background_color = 'none'
    end
gc = Magick::Draw.new
gc.annotate(mark, 0, 0, 0, 0, "Image by RMagick") do
    self.gravity = Magick::CenterGravity
    self.pointsize = 32
    self.font_family = "Times"
    self.fill = "white"
    self.stroke = "none"
    end
mark.rotate!(-90)

clown = Magick::Image.read("clown.jpg").first
clown = clown.watermark(mark, 0.15, 0, Magick::EastGravity)
clown.write("watermark.jpg")

require 'RMagick'

clown = Magick::ImageList.new("clown.jpg")
clown = clown.raise
clown.write('raise.jpg')