Do you mean you want to view webpages in the same size class as on a larger screen?
Well, it depends how the site is coded actually, but if you hold down on the "refresh" button, it'll give you an option to "request desktop site". But for some sites it doesn't work as per the way they've been written.
In that case the way the site is written doesn't give you many options. The site is written to scale with screen size regardless of device type, even though you request a desktop site, it still sees your screen size is small, and presents a small site.
You can also ask for the desktop version by clicking on the center button (the "share" button), scroll to the right, and there you will see "Request desktop site".
You can also ask for the desktop version by clicking on the center button (the "share" button), scroll to the right, and there you will see "Request desktop site".
This is also possible, yes, but the resulting action is the same as per my instructions, and if it's something you do regularly, doing it from the URL bar is a bit quicker