I think you'll find that once you write the images to disk in any of the popular (gif/jpg/png) formats, they'll be stored as 8-bit indexed palletised images.

The tiff file format might theoretically support 4-bit indexes; but I've never come across one; nor any tool that would write one?

With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.

The start of some sanity?

In reply to Re^3: How to keep Imager's image files small ? by BrowserUk
in thread How to keep Imager's image files small ? by palkia

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