Growing image

Hi,

at the moment I'm developing an application with
seaside, magritte and magma. If I start with a fresh
image I only need a few days for the image to exceed
100MB in total size. 

Is there a way do display the total amount of objects
being in the image? I think only a vast amount of 
objects could make the image grow that much. A list
of object grouped by class and sorted by amount would
be very helpful. 

Is there any such tool?

regards,

Norbert