At work I use two displays, I have a full hd (1920 x 1080), 24 inch monitor, and I have the display of my laptop, which is also full hd, but its physical size is only 15 inches, so its DPI is higher.
If I open a website in Internet Explorer and I drag the window between my two screens, IE seems to automatically change the zoom setting to a higher value on my laptop screen.
Stack Overflow on the 24 inch screen:
Stack Overflow on the 15 inch screen:
The important thing to note is that the DPI setting in Windows is NOT set to a higher value in the Screen Resolution settings (I don't like to use that because many apps handle it so poorly), so it is only a mechanism of IE itself.
I tried the same with different browsers, but by default they do not provide this mechanism, and I couldn't find any setting to turn this on.
Is it possible to have the same behaviour with either Chrome, Firefox or Opera? (Currently I use Chrome, but this single feature is so important for me that I would be willing to switch to FF or Opera for this. I tried IE for a day but I couldn't get used to it.)