Gif file oddity

[John Dann]

I'm creating a bitmap and saving in gif format with:

mybitmap.save(path, Imaging.ImageFormat.Gif)

In the IDE (VB.Net Pro 7.1.3088) on some test data I get a gif file of
57K in size. On a different PC with the v1.1 framework installed,
running the same executable with exactly the same data gives a 96K
file. Obviously I'd rather have the smaller file size available to
users.

Is it possible that there's an updated (ie offering greater
compression) Imaging class somehow available in the IDE. Or some other
explanation? The development PC is running XP SP2, while the user test
PC has Win2K. Could this be the reason?

JGD

 

[Alex Clark]

Hi John,

I believe .NET will simply tap into the imaging codecs installed on the
target system when saving images in non-bitmap formats. XP SP2 probably has
a newer GIF codec with better compression installed on it which is why
you're seeing the difference.

Kind Regards,
Alex Clark