The CP8 extension is associated with a CP8 256 grayscale image — an 8-bit image, which can render up to 256 shades of grey. The CP8 image format is currently considered obsolete and uncommon, so if you came across such an image it is probably old. The best way to manage its storing and transferring is to convert it to a more popular format.
The quick and simple way to handle your files is to get a quality piece of software, such as reaConverter. This software is extremely efficient in managing a wide range of batch conversions. As you will soon realize, reaConverter will help you avoid spending countless hours trying to figure out how to convert multiple CP8 files as once.
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