Qualities.

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• JPEG is resolution independent. Image sizes that are not multiples of 8 pixels are padded.
• 8 and 12 bit component precision modes are defined.
• Up to 255 colour components can be handled per image.
• No absolute bitrates are defined.
• Colorblind in that JPEG has no information about which components, if any, are color. Nor, in fact, even if they are actually image components at all.
• Customisable quantization tables provide the only method of controlling DCT quantization.