Also, some sites, at the very bottom of their [usually] home page, will have a link for you to be re-directed to their "normal" desktop version. But, not all do (no matter what you do - you're forced to the mobile version if you're using Safari). As Jeeper pointed out - it makes it smaller because it's not designed to be seen on the iPad.
But, if they've provided it, try looking at the bottom of the page. Else, I suggest you use Jeeper's excellent advice to use a different web browser to "trick" the web page into thinking you're visiting on a non-mobile device.
Marilyn