ImageMagick file size help?

[emma57573]

What the following bit of code does is create a thumbnail of 190x190 then it will crop it to 170x150 in proportion

 

Its working great but some of the file sizes are still coming out quite large and eating on load times/Bandwidth

 

Now I should be able to get a size of about 8 - 12kb for each of these images as they are only small but I cant find any code that will compress the file size to a size that I specify.

 

Ive found loads of resizing commands but I cant find a command to specify a size to compress to.

 

Can anyone help me out?

 

exec("convert -size 190x190 $path1 -thumbnail \"170x150^\" -gravity center -extent 170x150  $path2");