Open XML Paper Specification known as XPS consists of structured XML markup that determnes the layout and visual appearance of each page within the document. The markup language is a subset of XAML which allows it to incorporate vector-graphics in documents. Microsoft developed XPS with the intention of creating an alternative to PDF.
An XPS file is a unicode ZIP archive which use the Open Packging Conventions and contain the files which make up the document. The files includes are an XML markup file, text, embedded fonts, raster images, 2D vector graphics and any DRM (Digital Rights Management) information. These contents can be reviewed by opening in an application that supports ZIP files.
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JPG's are often used for web sites and email as they are generally smaller file sizes as they are lossy meaning that some image quality is lost when the JPG is compressed and saved. The resultant 'lossy' file means that quality can never be recovered. The JPG format is often used in digital camera memory cards. The JPG file is a great format as it often manages to compress files to 1/10 of the size of the original file which is especially good for saving on bandwidth.
JPG is a graphical file format for editing still images, it offers a symmetrical compression technique which is processor intensive and time consiming in both compression and decompression. JPEG is a joint standard of the International Telecommunications Union (ITU-T T.81) and the International Organization for Standardization (ISO 10918-1). JPEG involves a lossy compression mechanism using discrete cosine transform (DCT). Compression rates of 100:1 can be achieved, although the loss is noticeable at that level. Compression rates of 10:1 or 20:1 yield little degradation in image quality.
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