Jpeg to gif conversion

Hi;
I want to convert jpef or png images to gif format, but I have a problem.I'm using a gif encoder and normally I can convert jpeg files to gif files when jpeg files are 256 colors.
When I try to convert 65000 or more coloured jpeg or png files it gives error and said gif files can not contain more than 256 colors.
How can I change the loaded images color?Decrease to 256?
Regards
Murat

A gif can only have 256 colors, trying to put more colors in it is an error.
If you want more colors use png.
Converting a jpeg to a gif is normally a bad idea. Gif and png compress drawing good, but photos bad, jpeg is the opposite.
So gif->jpeg normally gives you a file that is a lot bigger for the same quality.

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