But so far it has not been possible. All reductions so far do so by two methods. Compressing of the data such as ZIPping or by lossy compression.
The answer is for today, you can't.
Maybe someday there will be a truly loss less compression that will make a dent more than zipping but not yet.
Bob
how can you reduce the size of typical photo files, such as tif, gif, jpeg, bmt, without compromising the photos?

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