Do you know any proxy solution that saves bandwidth like Opera Mini, but for the computer?

First of all, I know Opera Mini can be installed in Windows. Haven’t tried that yet, though.

What I am asking about is a (probably paid) service that I presume most likely exists, that will serve as a proxy, compressing HTML and most importantly, images.

The purpose is to save bandwidth when I’m using internet at the computer via my phone’s limited data plan. Every saving counts.

Let me know if you need any clarification…

Thanks!