I'm using PhotoFiltre (I tried both free version and payed Studio version) to batch convert a number of BMP screen dumps to GIF format
The GIF output may be selected as "maximum color count" or "256 colors". I tried both.
I don't do any changes in the picture (like size etc), but only "save as" the new format.
This tool PhotoFiltre is quite good at preserving palette information in conversions and keeps the colors very well.
The resulting GIF pictures look very good in color BUT the white background (there is a lot of background in the dumps) is slightly changed.
Instead of white RGB=FFFFFF I get FEFEFE or even F9F9F8
It seems like using the method "256 colors" is a little better, resulting in more FEFEFE backgrounds and not so much in F9F9F8.
This "corruption" differes from picture to picture (even though all pics have similar size and similar amount of background; however they of course differ in details)
I do understand the problem with optimizing palettes etc, but I didn't expect this problem when converting to "maximum color count"
And also I had hoped for the actual background (simple white FFFFFF) to be correctly converted.
Is this a limitation of PhotoFiltre, should I change to other tools?, or is this something that one always must count with in conversions?