--- title: Chunky PNG category: Ruby libraries --- ### Loading image = ChunkyPNG::Image.from_file('filename.png') image = ChunkyPNG::Image.from_blob(File.read('file.png')) image = ChunkyPNG::Image.from_io(io) ### Saving image.save('filename.png') File.open('newfile.png', 'wb') { |io| image.write(io) } binary_string = image.to_blob ### Drawing image[0, 0] = ChunkyPNG::Color.rgba(255, 0,0, 128) image.line(1, 1, 10, 1, ChunkyPNG::Color.from_hex('#aa007f')) ### Canvas crop(x, y, w, h) ### Transforms new_image = image.flip_horizontally.rotate_right