You've probably noticed that I use some pretty big photos on each blog post here. That should mean big file sizes - but it doesn't have to.
When you take a high resolution digital photo and simply resize it for your web site you are NOT compressing it. Or if you are, then you are probably not compressing it as much as you could be.
I use a macbook air as my only computer and I do not have an external display. This means that my screen has a maximum resolution of 1440 x 900.
For those of you with multiple monitor setups you might think it is odd but it works for me and forces me to concentrate on the task at hand (or it would if I didn't have a tablet and phone as well).
The web was meant to be read, not squished.
This isn't the way to test a responsive design.