Ubuntu4Beginners

If you want to optimize your large JPG picture you can use the Imagemagick program which is installed by default in Ubuntu 9.10. From Gnome-Terminal go in your folder where you keep your pictures, for example

cd /home/user/Pictures 

and for optimize only one picture write

mogrify -quality 85 Picture.jpg 

For optimizing all the pictures in that folder write

mogrify -quality 85 *.jpg 

85 reprezents the quality of the pictures.

Good luck!