Squid Gurus, I am not sure if Squid is able to do this, but I thought this would be the right place to ask. Here is my setup Clients: Windows and Mac PC's with proxy setting to 3128 Squid Box: v2.6, not in forwarding path between users and Internet Is there a way I can have Squid run a Perl script everytime a .JPG is requested before/after checking the cache? I would like to add some logic to manipulate the image if it matches a certain criteria within the Perl script. I have seen ways of doing this with IPtables when the Squid box is in the forwarding path. Is this possible otherwise? Thanks! Ethan