How can I calculate the image size in kb/b?

Essentially, you don't. It will vary widely dependant upon the image format (.gif, .png, .jpg etc.), the compression mode (quallity mode for .jpg), and the image itself. An image consisting of all one color, or just 2 or 3 colors will compress much better than a complex image containing lots of colors,

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In reply to Re: image size in k by BrowserUk
in thread image size in k by Anonymous Monk

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