Hi,
convert - convert between image formats as well as resize an image,
blur, crop,
despeckle, dither, draw on, flip, join, re-sample.
$ convert [input-option] input-file [output-option] output-file
$ convert picture1.jpg picture1.png
to convert jpg format to png format
$ convert picture1.jpg --resize 25% picture1.png
to resize the image and convert to png format
for more examples:
http://linux.about.com/od/commands/l/blcmdl1_convert.htm
http://www.imagemagick.org/Usage/
regards,
T.Dhanasekar
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