Dear,

i build up Proxy server + Imagemagick compression for internal use. It was working nice on JPEG and PNG files.

for JPEG i did reducing quality
for PNG i did conversion to JPG
for GIF i got problem.

There 3 types of GIF Image i ever seen :
1. normal picture <= no problem if i convert to JPG
2. moving picture <= i was using "identify" command to check how many lines, if more than 1 then will skip it before convert to JPG 3. normal picture + transparent background <= i got problem on this. any idea howto check that the image use transparent background ? because when i converted it to JPG, i got white background >.<

any idea or clue ?  very thx before
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