Compress Images in Ruby

Aspose.Words - Compress Images

To compress images using Aspose.Words Java in Ruby, simply invoke the compress_images() method of CompressImages module.

Ruby Code

def compress_images(doc, srcFileName)
 messageFormat = Rjb::import("java.text.MessageFormat")
 file_size = get_file_size(srcFileName)

 # 220ppi Print - said to be excellent on most printers and screens.

 # 150ppi Screen - said to be good for web pages and projectors.

 # 96ppi Email - said to be good for minimal document size and sharing.
 desiredPpi = 150

 # In Java this seems to be a good compression / quality setting.
 jpegQuality = 90

 # Resample images to desired ppi and save.
 resampler = Rjb::import("com.aspose.words.Resampler").new
 count = resampler.resample(doc, desiredPpi, jpegQuality)
 puts MessageFormat.format("Resampled {0} images.", count)
 if (count != 1) then
 puts "We expected to have only 1 image resampled in this test document!"
 end 
 dstFileName = @data_dir + "TestCompressImages Out.docx"
 doc.save(dstFileName)
 puts messageFormat.format("Saving {0}. Size {1}.", dstFileName, get_file_size(dstFileName))

 # Verify that the first image was compressed by checking the new Ppi.
 dst_doc = Rjb::import("com.aspose.words.Document").new(dstFileName)
 nodeType = Rjb::import("com.aspose.words.NodeType")
 shape = dst_doc.getChild(nodeType.DRAWING_ML, 0, true)
 convertUtil = Rjb::import("com.aspose.words.ConvertUtil")
 imagePpi = shape.getImageData().getImageSize().getWidthPixels() / convertUtil.pointToInch(shape.getSize().getX())
 if (imagePpi < 150) then
 puts "Image was not resampled successfully."
 end
end
def get_file_size(file_name)
 file = Rjb::import("java.io.File").new(file_name)
 return file.length()
end

Download Running Code

Download **Compress Images (Aspose.Words)**fromany of the below mentioned social coding sites:

• GitHub